Unguistics: The Representationof Language 241 6.3 Syntax SomePreliminaries Languagesare cognitive systemsthat enablehumanbeings to expressan infinite range of meaningsin a physical, (typically ) acoustic form. However, having investigated a theory of phonological representation, we are still far &om an understandingof how linguistic sounds are paired with semanticinterpretations. Indeed, one of the central mysteriesof natural languagecan be couchedin this way : how is it that the movement of air molecules, and attendant changesin pressure,can ultimately be treatedby human beings as meaningful? Obviously , meanings must be correlated with morphemes and words, but there must also be a procedure for assigning meaning to phrases, sentences , and larger discourses. Current linguistic theory maintains that there is a highly articulated subcomponent of grammars- the syntax- that mediatesthe pairing of sound and meaning . As in the case of phonological theory (or, indeed, any currently developing theory), there are a number of alternative approaches to the study of syntax. However, to permit us to examine syntax in some depth, we will concentrateon the theory of generative grammar currently being developed by Chomsky and others known as Government and Binding (GB). (For referencesto and summariesof other approaches, seeSells 1985 and Wasow 1989.) There are severalmotivations for positing a level of syntactic representation. Consider a sentencelike Herb and Raewent to the beachin which there appearsto be an intuitive boundary between the subject of the sentence, Herb and Rae, and the predicate . The syntactic structure of the sentencecan be informally , went to the beach sketchedas follows: (22) [[Herb and Rae] [went to the beach]] Sometimeswe have clear intuitions (introspective beliefs and judgments) about this kind of structural categorization. Asking a native speakerto " divide a sentenceinto its two main parts" will fairly reliably give the structure in (22). There is also considerable experimental evidence within psycholinguistics to support the view that the mental representationsof sentencesinvolve higher-order structure of this sort. Fodor, Bever, and Garrett (1975) provide a good overview of these results. Levelt (1970), for instance " , showed that when subjects are asked to judge the " relative relatedness of adjacentwords in a sentence , responsesshowing a high degree of relatednesscluster around syntactic boundaries like those indicated in (22). In experiments using more , Fodor and Bever (1965) inserted brief clicks into sentencesand complex sentences asked subjects to locate the noise. Subjects' performance was best when the click coincided with a syntactic boundary. In certain cases, however, our intuitions about syntactic structure are not always clear and may be subject to disagreementamong speakers . Moreover, we ought not the of a investigate properties languagesimply by asking speakersto tell us about its structures. Although people often believe that they have insight into such matters, it does not makefor good scienceto rely on the laypersons hunchesabout languageany more than it would to employ suchan approachin the study of an organ like the brain, or the mechanismsof visual perception. Consequently, casesin which experimentalevidenceis unavailable, or in which we may not yet know where to look for experimental confirmation, will require other 242 6 Chapter . Fortunately, there ways of establishingthe structure that we associatewith sentences are tests that can be applied that provide linguistic evidence for assignedstructure. tests.In this regard, considerthe following ambiguous Among thesetools are constituency sentence , a casein which a single string of words can be assignedmore than one semanticinterpretation. (23) The people talked over the noise. This sentencemight be interpreted to mean that the people spoke so as to overcome an interfering sound. In this casea plausible syntactic analysisof the sentencemight be as in (24): (24) [ Thepeople] [talked [[over] [the noise]]] Here, the verb is talked, and the rest of the predicateconsistsof a prepositional phrase overthe noise(which in turn consistsof the preposition overand its object the noise ). the sentence be to mean that the discussed , Alternatively might interpreted people the noise. Under this interpretation, a reasonableconstituent analysismight look like this: (25) [ Thepeople [[talked over] [the noise]]] This analysisof (23) treats the verb ascomplex, consistingof the simpleverb talkedand the particle over. But if this grouping is correct and the string talked over forms a constituent (a structural unit), we should be able to substitute another verb for it - for - and still have a sentencethat instance, discussed preservesthe same relationships between structure and meaning. In the caseof (24), however, we cannot make such a substitution. Instead, we can substitute a phraselike in spiteof the interruptionsfor over the noise , consistent with the claim that the latter constitutes a structural unit in (24) (though not in (25 . We refer to this as the substitutiontest. In the caseat hand this test reveals that a single sentencecan correspond to two quite different propositions, eachof which has a distinct syntactic (and logical) structure, hence, a different cognitive representation. Additional confirmation for the conclusion that (23) can be associatedwith two different syntactic representationscomesfrom considering the following example: (26) The people talked the noise over. Notice that unlike (23), (26) can only mean that the people discussedthe noise, and not that they overcame it. But why does the second meaning disappear? Our explanation is that when (23) is structured as in (25), it can be transfonnedinto an alternative representationin which the particle overappearsat the end of the predicate. Other complex verbs such as call up and egg on also allow displacement of the particle: . +-+ The committeecalled (27) a. The committee[calledup] the candidate the candidateup. b. The fans[eggedon] their opponents . +-+ The fanseggedtheir opponentson. , however,do not allow a repositioningof the prepositionat the Prepositional phrases endof the phrase : Linguistics: The Representationof Language (28) 243 a. The man stood quietly [ behindthe tree]. .,t+ ~ e man stood quietly the tree behind. b. The duck worried about the football. .,t+ . The duck worried the football about. So, when (23) has the meaning and the structure of (25), over counts as a particle and can be dislocated to the end of the predicate. This explains why (26) can carry the meaning of (23) that is supported by (25). In contrast, when (23) has the meaning and the structure of (24), over counts as a preposition. Sinceprepositions cannot dislocate (see(28 , overcannot dislocatein this analysis. Thus, on its representationin (25), (23) can be turned into (26), but not on its representationin (24). This provides a strong argumentfor taking meaningto be assignedon the basisof syntactic structure, and not directly to words and sentencesthemselves.By applying constituencytestssuchas the substitution test and by examining distributional patterns in a language, linguists can determine the nature of the syntactic structure. We argued earlier that the inherent creativity of language, and the ability of the human information-processingsystem to acquireand processit , cannot be explainedif we view the language ability simply as a mental list of sentences . Such a list of sentenceswould need to be infinitely long, a fact at odds with the assumptionthat all of our cognitive capabilitiesmust be representablewithin Anite-sized systems(our brains). Our most recent considerationsadd a secondreasonto resist a conception of - the the languagefaculty as a list of sentences interpretation of sentencesrequiresthe assignmentof a particular syntactic structure. We have suggestedthat a more promising conception of linguistic knowledge is that speakersknow the patterns of their language, and that those patterns can be representedas a set of rules and principles that define the infinitely large classof permissiblesentences . TheGoalsof a Grammar What would an appropriateset of suchrules and principleslook like for a languagelike English? To approach this question, consider first the simpler case of an abstract formal languagethat consistsexclusively of sentencelikestrings containing any number of instancesof the symbol "B " followed by a single occurrenceof the symbol " A ." A grammar for this languagecontains the initial symbol " A ," and a rule that dictates that the symbol " A " can dominate(consist of ) the string of symbols "B A " : (29) A - + BA The application of such a rule yields the string "B A " ; the symbol " A " dominatesthe " two symbols B A ," as the rule specifies(figure 6.16). Notice, however, that this rule - it may can apply recursively . If we reapply the rule once, reapply to its own output " " " the lower occurrenceof A will dominate the string B A ." If we reapply it twice, we get the result shown in figure 6.17. There is, in fact, no limit to the number of times the rule may be applied in a derivation. A 1\A B Figure6.16 Treerepresentation of a derivationemployingthe rule A -+ B A Chapter 6 .m 244 Figure6.17 An exampleof a recursivederivatiol1 Supposewe considereachoccurrenceof a symbol that doesnot dominateany other symbol a terminal element. The sequenceof terminal elements constitutes a wellformed string, or sentenceof the language. In the caseof figure 6.17, the sentencewe have generatedis "8 B B A ." Sincethere is no upward bound on the number of times that this rule can be recursively applied, there is an infinite number of sentencesin this formal language. Accounts in current linguistic theory hold that the syntax of natural languagescan be characterizedby a grammar that employs recursionin this senseto provide for the essentialcreativity of linguistic systems. Note that all the sentencesgeneratedby our simple grammar will be of the form " " " " " " 8I1A - some number n of 8 s followed by exactly one A . Any other string is ungrammatical it is not a part of the language, and the grammar will not be able to generate(assigna structure to ) it. The syntacticianundertakesto determinejust which finite set of rules is adequateto the task of defining the syntactic patternsof a particular language. The primary goal of syntactic theory &om the perspectiveof the cognitive scientistis to model the systemof knowledge that determineswhich utterancesconstitute the language, and to contribute to an explanation of how that knowledge is acquiredand used. As we have pointed out, the criterion of grammaticality is not to be found in . We test claims about syntactic grammar books, but in the judgments of speakers structure and the adequacy of a particular hypothesis against data in the form of intuitions of native speakers . All speakersof English will , without hesitation, report without a is not a sentenceof English. Neither that the string .girl the the hippopotamus is .girl the kissedboy the, even though we can make more senseof this string. Furthermore , we can produce and understand a sentencelike Melvin ate a bulldozerthat he believedwas trying to turn him into a watennelonand determine that it is grammatical, in spite of the fact that it expresses a bizarre claim. Indeed, Chomsky (1957) observed that a sentencelike Colorlessgreenideassleepfuriously is grammatical (that is, fits the pattern of English) even though it is nonsensical. ' Syntacticiansdo not ordinarily rely on the production of speakersactual utterances in gathering their data. For one thing, speakersmay not necessarilyproduce the types of sentencesthat we wish to investigateeven though they are within their grammatical competence.For another, actualutterancesmay involve errors in perfonnance: shifts of attention, limits on memory, drunkenness , and so forth , can produce outputs that are not actually consistentwith the grammar(and whose inconsistencyhasa different kind of explanation). Unguistics: The Representationof Language 245 S ~~~- - "'--~.."- " '- ~,,- ,, ",- - ~", r - -" NP VP TENSE "" """""""""""""" .............. , ............ ... .. / ... """ ""'" .... ............. I / / , DET N V AP PAST I the I dog I be t humble Figure 6.18 Phrasemarker for the sentenceThedog was humble As a result, we must provide a laboratory-like environment in which we arti6cially induce the kind of linguistic behavior that we want to examine. Syntacticianstypically ' ' ' " ? is ; is . . . a grammatical sentence proceed by asking questions of native speakers normally all that is needed once a subject has a rough-and-ready understanding of what is meant by grammaticality. By and large we can develop a substantialand highly consistentbody of data in this fashion. We typically need not resort to more formal experimentalprocedures, although in unclearcaseswe may well want to do so. In part, this consistencyis achieved by investigating constructions that are sharedby many speakersof a given dialect or language. The Theoryof Grammar: PhraseStructure We have already seen evidence that the syntacHc properHesof sentencescannot be describedsolely in terms of linear sequencesof words. But linear order is an important Hon of grammaHcality for many (though not all) languages. In part of a characteriza new books is a well -formed phrase, whereas. booksnew is not. By contrast, in English Sinhalapot alut- literally ' booksnew' - is grammatical, but . alut pot is not. Syntactic theory must therefore characterizea level of representaHon that allows us to capture the noHon of syntactic constituency, permits a characteriza Hon of the linear order of elements within and between units, and admits of (at least some) variaHon among dialects and languages. One form that such representaHons can take is the phrase structuretree, or phrasemarker. Phrasemarkersare upside-down treelike structuresin which the nodes are labeled by syntactic category. For a sentencelike Thedog was humble, the phrasemarker will have roughly the form shown in figure 6.18. Some of the symbols appearing in the phrasemarkersthat we will discussare listed in table 6.4. Although you are no doubt familiar with terms like noun, it may not be so clearwhat a Noun Phrase( NP) is. Although the subject or object of a sentencesometimesis a ), other sentencescontain subjects single noun (for example, a proper noun like Seymour or objects consisHng of a sequenceof words. For example, in figure 6.18 we find the subjectNP thedog. The sentencewould have been equally grammaHcalwith a subject as complex as the only otherbookthat I haveeverreadthat I can rememberthe title of, or everyotherarmadilloin the town. Furthermore, these samesequencesof words can also appearin object posiHon, for example, after the verb liked in the string I liked. . . We can categorizeall sequencesof words (phrases) that can appear in subject (or object) position by assigning them to the category NP, noHng that phrasesthat occupy this slot contain at least one noun. 246 Chapter 6 Table 6.4 Symbols used in phrase markers Symbol Name Examples S NP OET N TENSE VP V AP A Sentence Noun Phrase Oetenniner Noun Tense Marker Verb Phrase Verb Adjective Phrase Adjective A girl walked the dog . the dog, a girl the, a, some dog, girl PAST, PRESENT walk the dog walk, kiss very smart, tall and thin interesting Next we will addressthe TENSEnode. We have madean unintuitive assumptionin figure 6.18: the tense marker appears in the tree in front of the verb rather than following it (as we might expect by observing that ordinary past tense verbs like walkedexhibit a past tense marker, -ed, suffixed after the verb stem). There are some important reasonsfor this decision, which we will survey later in the discussion. We should also note that English phrasemarkerscontain only two possible tenses, PAST and PRESENT. Other languageshave more complex tense systems, but English is restricted to past and present tense forms of the verb. Referenceto future time is " " accomplishedby means of a helping or auxiliary verb, for example, will , which precedesthe verb stem. ' In our analysis, the verb s tenseis determinedby selectingeither PAST or PRESENT as the node under TENSE. Notice that the verb itself is inserted in the phrasemarker in its basic unaffixed form. By convention, the TENSEnode specifiesthe tense of the verb immediately to its right , and the tenseof the verb is determinedby the value of the tensemarker chosenin the tree. The tree for the sentenceThedog is humblediffers from figure 6.18 only in that the node under TENSEis PRESENTrather than PAST. The explanation of the need for the Verb Phrase( VP) and Adjective Phrase(AP) categoriesis parallel to the explanation for the category NP. In eachcasewe find that although some sentencesexhibit simple adjectivesand verbs, others-contain complex phrases. For example, instead of the simple adjective humblein figure 6.18, we might have had the complex AP more humblethan the lowliestsnail, or very, very humble. Similarly, died, chasedthecat, and gavehis ownera hard time are all VPs that might have substituted for was humblein the examplephrasemarker. Two final, brief comments. The Determiner (DET) category comprisesa class of words including some , every, and a, in addition to the. These introduce and specify common nouns. The S node, at the top of the tree, can be thought of in two ways: as the symbol for Sentence , and also as the Start symbol that begins eachphrasemarker. Not every arrangementof nodes into a phrase marker correspondsto an English sentence. For example, in English the subject NP typically precedesthe VP predicate. Therefore, reversing the first NP and the VP in figure 6.18 resultsin the ungrammatical . string was humblethe dog. A competent speakerof English must know a set of rules and principles that distinguish possible from impossible phrase markers. Although some of these restrictions will be particular to a given language, others may follow from general properties of language. However, it is not always clear at the outset whether any given syntactic property is to be attributed to a language-specificrule or : The Representation of Language 247 Unguistics a general linguistic principle. Consequently, we will begin by assuming that every feature of the language under investigation must be spelled out by a rule, and later suggestways in which some of theserules might be replacedby generalprinciples. The rules that describe constituency relations and linear order are called phrase structurerules. Here are the rules we need to construct the phrasemarker in figure 6.18: (30) S- + NP TENSEVP NP - + DET N TENSE- + { PRES,PAST} VP - + VAP AP - + A The rules shown in (30) tell us that asentenceS ) consistsof an NP, a TENSEnode, and a VP, in that order. This rule encodes the basic order of English subjects and predicates. The secondrule specifiesthat an NP dominatesa determinerfollowed by a noun. The TENSErule provides the two tensealternativesin English. Exclusivechoices are listed within braces, set off by commas. The next rule dictates that a VP includesa Verb followed by an Adjective Phrase, and the final rule indicates that an Adjective Phrase dominates an Adjective. Although each of these rules requires considerable amendmentsto be complete and accurate, this small grammar is sufficient to generate the phrasemarker in figure 6.19, which is the sameas that in figure 6.18, without its lexical items. In order to associatethe bottom nodes of the tree with actual lexical material (words), we must apply the processof le.ricalinsertion . To accomplishthis, we require a list of vocabulary words called the le.ricon, which specifiesa syntactic category for each entry as well as infonnation about its phonological fonn and semanticinterpretation. In the caseof verbs, a subcategorization frameis also specifiedto indicate which syntactic categoriesmay cooccur with eachparticular verb (its complement structure ). Notice, for instance, that becan appearwith an NP as well as an AP: (31) Dogs are [NPa responsibility]NP (32) Dogs are [ APquite bothersome]AP Verbs like perspireand elapsediffer from bein that they cannot cooccurwith NPs at all: (33) (34) A carpenterperspired. .A carpenterperspiredsweat. S ~ " . _ . _ . . ~ _ . ~ l NP TENSE VP . . " . , . " . , , . . . . " .DET I . NPAST V ,AP I A (35) (36) The time remaining in Rover' s life elapsed. " The time remaining in Rover' s life elapsedtwo hours. Figure6.19 Phrasemarkerfor the sentence in figure6.18 beforelexicalinsertion 248 6 Chapter for perspired for elapsed , andexceeded By substitutingexpelled , we reversethe patternof in 33 36 . Each verb then, must be associated ( ) , ( ) grarnmaticality judgments through with a rangeof appropriatecomplements . Samplepartiallexicalentriesfor someof the vocabularyunderconsideration might look like this: (37) be, Ibi/ , V, _ {NP, AP} / 0 , Iprspair, V, _ perspire 0 , lilzps / , V, _ elapse / V NP _ , , , expel IwpEl I exceed / V NP , Eksid, , _ time, Itaim/ , N the, lOAf, DET On thebasisof suchlexicalinformation , we canselecttheappropriatewordsandinsert theminto trees. Transfonnations In addition to the phrasestructureand lexical componentsof the grammar, collectively known as the base , there is a secondtype of syntactic rule that hasplayed an important role in linguistic theory, the transfonnation . Unlike phrasestructure rules, this classof rules does not characterizephrase structure trees. Rather, transformations rearrange phrase markers in certain ways. The rule discussedabove that optionally moves a particle to the end of a VP (particle movement) is an example of a transformational rule. Another type of phenomenon that has yielded to transformational analysis is socalled wh-questionfonnation. Wh-questionsare sentencesthat ask 'Who ? Where? Why ? What?" and so forth , in contrast to yes/ no questions, which merely require an affirmative or negative answer. Examplesof English wh-questionsare given in (38) and (39): (38) Who spilled it? (39) What is the problem? Wh-question words in other languagesmay not, of course, begin with the letters wh- (even in English, how questionsare of the wh-question type), but such questions typically involve a query correlatedwith somemajor constituent of the sentence , such as the subjector object NP. In English the question word takesthe placeof somesuch constituent and usually appearsat the beginning of the sentence. In (38), becausewe are questioning the subject, it is not possibleto detect any shift in position. But in (39), where we are questioning a noun phraseat the end of the VP, the question word appearsin sentence-initial position. Linguists have analyzed these types of questions by assuming that the question word is initially generated in a normal argumentposition(as subjector object), but is consequentlymoved to sentenceinitial position by a transformation. The structure for (39) that is generated by the phrasestructure rules is shown in figure 6.20. Notice that we are assumingthat what is a noun, and that it is generatedby the phrase structure rules for NPs. The transformation of Wh-Movementthen applies to rearrangethe phrasemarker in figure 6.20, moving what to the front of the S. Another transformation, Inversion , will also apply to reversethe order of the verb and subject. 6.21 shows an informal Figure representationof these two movements. S , Nrr I vp " " / / " / " I /the " / DET N PRES V NP I problem I be I wha I S Unguistics: The Representationof Language 249 NP ~ " /I "prob "DET 'the N P I,lPRES I wha I em be Figure6.20 Phrasemarkergeneratedby phrasestructurerolesfor the sentence ? (39), Whatis theproblem Figure 6.21 Informal representationof transformations applying to the phrase marker in Agure 6.20 in the derivation of (39), What is the problem? Perhapsit is not clearwhy we could not simply generatethe word what insentenceinitial position in the initial phrasemarker rather than appealingto a transformationto move it to the front of the sentence. The reasonis that there is a dependency between the fronted question word and its initial argument position that would not be accounted for by this more direct analysis. The dependencymay be stated as follows: whenever there is a question word at the front of a sentence , there is also a corre< , sp nding gap a missing constituent inside the sentence. Thus, in (38) there is a missing subject; in (39), a missing object. Sentencesin which thesepositions are 8lIed, and a question word occursas well, are ungrammatical: . (40) Who Johnspilled it? . (41) What is the problem the book? In the framework we are developing, if we were to directly generatequestionwords in initial position, we would not be able to correlatesentence-initial wh-words with the corresponding gaps in argument position. We can, however, explain the facts in the transformationalaccount. On this analysis, the only way to produce a question word at the beginning of a sentenceis for that question word to have been moved there from its normal position, where it was initially placed by the phrase structure rules. Thus, it is an automatic consequenceof the transformationalmovement that a gap is left behind. Chapter 6 250 The should fonnation that question also predicts clauses . ( 42 ) and ( 43 ) present some relevant examples : in subordinate In the account transfonnational ( 42 ) I know ( 43 ) John case Bill who knows Mary I know what indicates ( 45 ) started John , the what ( 46 ) John knows object clause to insulted of the lowest as the subject Mary knew Nancy ~ can move two Mary ~ clause : subordinate considered t Furthennore in I out knows word who was question to the & ont of the subordinate , the : t In ( 43 ), what . considered Nancy clause . It is moved Bill ~ knew . Wh - Movement ( 42 ), before of in the subordinate position fonn ( 42 ), as ( 44 ) infonnally ( 44 ) insulted be possible I up , as in ( 46 ) : clauses knew considered Nancy t t I Finally , it is possible in both of these cases to move the questioned word all the way to the front of the main clause. Further rules apply , in this case, to insert a form of the auxiliary verb do, but (47 ) and (48 ) gives the basic idea of how this works : (47 ) . (48 ) do I know Bill insulted ~ t What does John know t I Nancy considered Mary knew t t I The full range of these constructions can be accounted for if we assume that the Wh - Movement transformation moves a question word to the front of an S. This type of formulation allows the rule to move the wh -word to either of two positions in constructions like those above , which contain more than asingleS node . Question formation , then , involves a movement transformation: the derivation involves moving a constituent to a new position in the phrase marker . We will now briefly discuss another type of transformation : a deletion rule . (49) Moe added salt, and Curly did too. Max preferred the mackerel, and Bill the brill . (51) Herman owned some dogs, and Mary owned some too. " " In each of these sentencesthere is a phrase that is understood but not overtly present. In (49), for instance, what Curly is understood to have done is to have added salt. Similarly, Bill is understood to have preferredthe brill, and what Mary owned was dogs. Thesesentencesare derived by deletion transformationsfrom the structuresthat : underlie the following sentences (50) (52) Mae added salt, and Curly added salt too. (53) Max preferred the mackerel, and Bill preferred the brill . (54) Herman owned some dogs, and Mary owned some dogs too. : TheRepresentation of Language 2S1 Unguistics The rule that converts the tree correspondingto (52) into the one correspondingto 49 ( ) deletesa VP, in this caseaddedsalt. There is an interesting specialcondition that must be met in order for this rule to apply: there must be a copy of a VP that is the potential deletion target elsewherein the sentence, or the larger discourse. For example , it would not be possibleto apply the VP-Deletion rule to the structureunderlying (55) in order to derive (49): (55) Moe added salt, and Curly added pepper too. Another way of putting the point is that this type of deletion transformationcan only &om the sentencethat remove material that is redundant, and therefore recoverable results after the rule applies. In the caseof (49) and (52), this recoverability condition is met. The examplesin (50) and (53) involve a rule that deletesverbs, sometimesknown as Gapping. In the caseof (51) and (54) a rule of IdenticalNoun Deletionis at work. For both of theserules, the conditions on recoverability of deletion obtain. Notice that the principle of recoverability of deletion has a very powerful practical motivation it must be possiblefor a hearerto determineexactly what constituent meaningis missing . Since the preservation of meaning is what is in order to interpret elliptical sentences involved, this may well be a case where general properties of human information processingare at work , interacting with the form and functioning of linguistic rules. A CaseStudy We will now examine more closely a special problem in the syntactic analysis of English, casemarking, and consider its relevancefor universal grammar. Casemarking is a device for varying the form of a word , typically to provide an indication of the role that it plays in a sentence. For example, in (56) the third person pronoun appears in a different form depending on whether it is the subjector the object of accused (heis case): in the nominativecase, him, in the accusative ' (56) After John saw Irv leave the victim s room, he accusedhim of the murder. In general, English appearsto have relatively little casemarking, especiallyin comparison to a languagelike Finnish, which has more than a dozen distinct casetypes. Furthermore, English speakersdraw systematiccasedistinctions only in the pronoun , system (and to indicate possessionwith the genitivemarkers ). By contrast, Japanese which provides case markings for subject and object- ga and 0, respectivelyattachesthem quite generally to subjectsand objects: (57) hon-o Jon-ga yonda. John (subj) book (obj) read ' ' John read the book. However, although it may appearthat English employs very little casemarking, we will show that caserelations actually playa highly significant role in English syntax, a role that may in part be determinedby properties of universal grammar. We begin this analysis by advancing an abstract hypothesis: all nouns in English bear case, but it is only in the pronoun system that case is markedby an overt phonological form. Is such a claim plausible? Are there other circumstancesin English grammar where a significant morpheme or syntactic category may not have a S ' " ' , " ~ ~ -N ,NP r "II TENSE ~ VP " ! ' " I I I , , PAST VI NPI I him I see John 252 Chapter 6 Figure6.22 Phrasemarkerenrichedwith indices phonetic realization? Although most English nouns are pluralized by adding the suffix / z/ , there are exceptions such as deer, which are superficially invariant in the singular and plural. That is, Thedeergrazedpeacefullyis ambiguously about either one deer or more than one deer. Notice that it will not do to suggest that deeris neither singular nor plural- that it does not bear plurality - becausein the caseslike (58) in which the verb inflects for number, deermust be plural sincewereis the third person plural form of the verb, which can only appearwith plural subjects: (58) The deer were grazing peaceably. The logic of the situation with regard to English case is similar. We know that pronounsmust be assignedcasebecausethey display it phonetically; we must look for additional evidence if we wish to claim that other forms (nouns in general) also are assignedcase- evidencefrom which we can deducethe presenceof caseeven where it is not overtly marked. -assignedby We begin by formalizing the claim that all nouns in English are case adopting the CaseFilter (from Chomsky 1986): (59) CaseFilter Every NP must bear a case. According to (59), there can be no grammaticalphrasemarkersin which NPs do not have a case. Typically , the noun in subject position of any grammaticalsentencewill receivenominative casemarking, and the object, accusativecasemarking. . For example, we will treat the We further hypothesizethat casemarking is assigned transitive verb as assigning accusativecase to its object. On this view, the verb " " deposits a case property on the object NP, by analogy to the way electrons are transferred from electron donors to electron recipients in chemical models. We can indicate this formally by annotating a verb that has assigneda caseand the NP to which it has assignedit with the sameindex, as in figure 6.22. In this caseseeand its object are coindexedwith the index i. Sincean NP that is coindexedto a verb hasbeen assignedthe accusativecaseby that verb, the third person object pronoun appearsin the accusativecase (him). If the object of seehad been other than a pronoun, case assignment(and coindexing) would proceed in the samemanner. For example, if Bill had been the direct object, the phrasemarker in figure 6.23 would result. That is, we can generalizecaseassignmentso that verbs case-assign their objects regardlessof whether the assignedcaseshows itself in the form of an overt morphological marking. Unguistics: The Representationof Language . -NP --- I N 253 S - - ~~ - - r I PAST - - - - - vp ~ // / / " " ' " VI NPI I N John I Bill .88 Figure6.23 Indexed marker forJohnsawBill phrase S ~..- '...' ."'" ' , ~ , , ,~~..._~ T "" ".,.,TENSE NPI I N I PAST / VI VP . / " " ' " NP I N John see I Bill Figure6.24 marker forJohnsawBill megalindexed phrase In a moment we will turn to evidencein favor of this assumption , but first we examine the caseassignmentmechanismwe have introduced a bit more closely. How does caseassignmentsucceedin linking a transitive verb to its object and , namely, that a transferring case? Supposewe start off with the simplest assumption verb can case-mark any NP. H this were so, we would expect the phrase marker in figure 6.24, in which seecase-marks the subjectJohn, as an alternative to the one in figure 6.23. Since caseis not overtly displayed on proper nouns, it might not seem problematical that the subject in figure 6.24, John, is coindexed with see. However, in situations where subject position is filled by a pronoun, it is clear that accusativecase cannot be assignedto subjectposition: . (60) Her saw Bill. (61) She saw Bill. We must therefore rule out the possibility of transitive verbs &eely case-assigning any NP. We can eliminate this option by specifying a domainin which caseassignment must take place. We will say that caseassigners(in this case, verbs) can assign case only to NPs that are in their governingdomain. This domain is defined as follows: 254 Chapter 6 A a ~_-:I"pf GOVERNS Figure6.25 " of thenotion"governing domain Graphic representation (62 ) A node (Xis in the governing domain of a node .8 if the first branching node that dominates .8 also dominates (X(where a branching node is one that dominates at least two other nodes). The simplest circumstance that satisfies this definition is illustrated in figure 6.25. In this case (Xgoverns .8 (and vice versa) because the first branching node that dominates (x, namely , X, also dominates .8. Below we will see other phrase structure configurations that fit the definition of government . For now , though , let us formalize the of case assignment as follows : principle (63 ) CaseAssignment under Government A case assigner can assign case only to an NP within the governing domain of the case assigner. We must now account for how case is assigned to subject position . Recall that the Case Filter requires every NP to be assigned case. Furthermore , the facts of English (as evidenced by the form of subject pronouns ) demand that it be nominative case that is assigned. First , we must identify a case assigner that can assign case to subject NPs. Our hypothesis is that it is the TENSE node that plays this role , assigning nominative case to NPs in subject position . Notice that TENSE is an appropriate choice in that it governs the subject NP , providing some motivation for our earlier decision to place TENSE before rather than after the verb . Now consider the phrase marker of the sentence He saw him , incorporating the two chains of indices that are required by the assumption that the nodes V and TENSE each separately coindex NPs within their governing domains (see figure 6.26 ). Here TENSE has case-assigned the subject NP , and V has case-assigned the object NP . Since TENSE assigns nominative case, the subject receives that case; since V assigns accusative case, the object is so marked . We have limited our commentsso far to the details of simple sentencesinformal - izing the account of English caseassignmentwe want to defend. The sentencesare . For one thing, they do not involve any Rorid constructions. But simple in two senses in a more technical sense they are simple becauseeach contains a single clause , a constituent with the basic properties of a sentence. English, as well as other natural languages, also allows constructionsthat can involve one or more subordinateclauses in addition to the main clause. Someexamplesof such constructionsare given in (64) through (68), with the subordinateclausesitalicized: (64) The position you aredefendingis preposterous. (65) After sizingup thesituation, John died. S ' " ' 'N ~ , ,NPJ " ~ . 1 _ -I~TENS VP " / I " , PAST VI NPI I N hesaw him 2SS ( zQ > Q Q ~ (>Q (~ > Q ( ~ C W :.m .Q.Q> Linguistics: The Representationof Language Figure6.26 Indexedphrasemarkerfor the sentence HesmDhim Figure6.27 Phrasemarkerfor the sentence BrendR is a spy (66), 1believe (66) I believe Brendais a spy. (67) That beansare magicalbecameobvious. (68) I suspectthat youfearedthat I knew Vernasneezed . Although the syntax of these constructions is complex (and fascinating), we will restrict our attention to points that bear on the analysisof abstract case, case assignment , and government. Severalof theseconsiderationsprovide interesting arguments in support of this analysisof case. Observe that (69), which is almost synonymouswith (66), differs somewhatin its syntactic structure: (69) I believe Brendato bea spy. First of all, the verb to beappearsin a tenseless (or infinitival) form in (69), whereasthe sameverb occursin (66) in its present tense form, is. The phrasemarkersfor (66) and S " 'PRE /N -NP -I"V ,~ 1 .ITEN "NP /VP "N ,I~ S " ' ; " , 1 to VP " / ' " ; V NP ~ D E N I Isp Ibeli Bre be a 256 Chapter 6 Figure6.28 Phrasemarkerfor the sentence Brenda to bea spy (69), I believe (69) are roughly as given in Agures 6.27 and 6.28; case indexing is suppressedfor clarity. Another important detail to notice is that in Agure 6.28 there is no TENSE marker of the usual sort in the lower S, just the in Anitive marker to. This accountsfor the fact that be appearsin its untensed uninflectedform. Given our previous assumptions about caseassignment, we can now account for a very interesting further difference between the structuresin Agures6.27 and 6.28 that is not immediately apparent. In the following set of data we have substituted pronouns for Brendawhere it occurs in the earlier examples: (70) I believe she is aspy . (71) . 1believe her is (72) . 1believe she to be aspy . (73) I believe her to be a spy. aspy . Thesedata show that the subjectposition of the tensedsubordinateclauseis assigned nominative case- just like the subject position in simple sentences ; we see this in (70). But the subject position of tenselesssubordinate clausesis assignedaccusative case, as, for example, in (73). We can explain these phenomenain the following way . We have claimed that it is TENSEthat is responsiblefor assigningnominative caseto subject NPs. The coindexing operations for the phrasemarker in Agure 6.27 and for sentence(70) will proceeduneventfully, and nominative casewill be assignedto each subject position (in both the main and subordinate clauses ); accusativecase will be to the NP in the lower subordinate clause in object assigned Agure6.29 (assumingthat believedoes not assigncaseinto tensedsubordinateclauses ). Consider, by contrast, the phrasemarker in Agure6.30, which underliesthe sentence (73). Sincethere is no TENSEnode in the subordinateclauseto assignnominative case to the subject of that clause, the theory predicts that nominative casewill not appear Linguistics: The Representationof Language S "" ""- """ " " " "" ~ " ~""",,,," 1 "~",~"", TENSE NP1 , ! pls / / y "VP ' / "" " " " 8 ""' -..~~"" """" "" """"""" "" r """"" "",,, VP NPJ TENSEJ ' // / I / " " " PRES V ' NP " / ' "N D Ei I spy I / - _r I believe S ~""" "- ~' ' " ~ ' "" " "",,,'~ T """"~~"" TENSE NP1 , I N I Figure6.30 Phrase marker for I PRES / / VJ 2S7 she be I . VP " "' " " , S-" ""' ~"" ' " "" "'""" " "" " """,,,,~ 1 """ to VP NPJ ' / / """, Vk "" ""NPk " " """"' , " "" "" " " " DET N believe her be I . the sentence(73), I beliIW her to bea spy, after coindexing I spy 258 Chapter 6 in this position. This, of course, leavesus with the question of what does assigncase to herin (62). One standardassumptionis that believecan be recruited to assigncaseto the subject position of tenselesssubordinate clauses , perhaps because(unlike in the caseof (61)) it is the closestpotential caseassignerthat governs the embedded subject position. Sincebelieveis a verb, we expect accusativecaseto be assigned, as desired. Given the constellationof assumptionsthat we have developed, we can accountfor what appears, at first blush, to be a very curious correlation between tense and case. More evidencefor this connection is to be found in contrastslike the following : took . (74) Mary him to be a fool. . { cons.ders} (75) Mary made . him a believer. . { cons.ders} (76) Mary concluded that he was a spy. { determined} Concentrating on the caseform of the subject of the subordinate clause, we note that the contrast between (74) and (76) is expected: subjectsof tenselessclausesare accusative, and subjectsof tensedclausesare nominative. The interesting caseis (75). Here the subordinate clause (if , indeed, it is a clause) apparently contains neither a tense marker nor the infinitival to. The case form of the third person pronoun is accusative(compare: .1 considerhe a spy), patterning with (74) rather than (76), in this regard. Again, this is th~ expected result, given our hamework of assumptions. Since the embeddedmaterial in (75) does not include TENSE, there is no case assigneravailable capable of assigning nominative case. Rather, the higher verb must case-assign the pronoun, resulting in accusativecasemarking. This pattern can also be observedin sentencescontaining complementsto the verb see : (77) John saw her leave. Here again, the complementto the verb, herleave , is untensed(compare. Her leavewith Sheleft). Consequently, caseassignmentof her cannot come Horn within the subordinate clauseand must be assignedby the higher verb, saw. Notice, incidentally, that this account of caseassignmentdirectly explains why strings like .Him/ He a believerand .Her/ She leave cannot appear as main clausesin standard English: in both of these there would be no availablecaseassigner. This guaranteesthat these examples strings can only appearas complementsto verbs that are capableof assigningcaseto subordinate structures(for example, (75) and (77 . One final pieceof evidencein favor of our theory of abstractcase assignmentspeaks more directly to the claim that all NPs are case-assigned(even if they do not reveal any overt casemarking). We have claimed that verbs assign accusativecaseto their direct objects. We might be more speci6c by restricting this principle to transitive verbs- verbs that take a direct object. Intransitiveverbs (those that do not appearwith direct objects) obviously cannot assignaccusativecase. then that we stipulate , , Suppose that intransitive verbs do not assign case, as a basic property of all intransitive verbs. We can extend this generalization to include passive verbs. That is, just as linguistics : The Representationof Language 259 verbphrases areintransitive Putanotherway, passive , suggesting to assign case . : thefollowingcontrasts , let usreconsider Againstthisbackground she (78) a. Johnbelieved Brenda wasaspy. . { her } .she b. Johnbelieved Brenda to beaspy. { her } she (79) a. It wasbelieved Brenda wasa spy. . { her } she . b. It wasbelieved Brenda to beaspy. { her } The pattern in (78) is usual. In (78a) the tense marker in the lower clausewill assign nominative caseto the lower subject, explaining why Brendaor shecan appearin the embeddedsubjectposition. Her is ungrammaticalsinceit would require accusativecase assignment. In contrast, in (78b), in the absenceof a tense marker in the lower clause, believedassignsaccusativecaseto the embeddedsubject, accountingfor the grammaticality of Brendaand her, but not she. (79a) also follows the expected generalizations. The caseof the subject of the subordinateclausemust be nominative, as assignedby the tensemarker in the lower clause. Thus, just as in (78a), either Brendaor she, but not her, is suitable as the subject in the subordinate clause. Notice that in each of these three cases , either the nominative form (she) or the accusativeform (her) is possible, and . On our analysis, the choice of pronoun shifts so is the non-case-marked name Brenda with the choiceof caseassigner(either TENSE, for nominative, or the main clauseverb, for accusative). The proper name can receive either nominative or accusativecaseand therefore is generally compatible. However, this generalizationappearsnot to obtain in (79b). The puzzle is, Why are noneof the possibilitiesfor the embeddedsubjectgrammatical in (79b)1 Let us consider each option in turn. First, since the subordinateclauseis infinitival , there is no tense marker available to assign nominative caseto embedded subject position, explaining the impossibility of she in subject position. In fact, case cannot be assignedfrom within the subordinateclause, since there are no governing caseassignersin the clause. In this regard, the subordinateclausepatterns with (78b). Of course, in such a circumstance , it fell to the higher verb believedto assign (accusative ) caseto the lower subject. In (79b), however, the main clausecontains the passive verb phrase was believed , which, becauseit is intransitive, is incapable of assigning accusativecaseto the lower subject. This explains why the third candidate, her (the accusativeform), is ungrammaticalin (79b). 260 6 Chapter We have ruled out the nominative form of the pronoun in (79b) becausethere is no nominative caseassignment, and the accusativeform becausethere is no accusative caseassignment. But why can't Brenda, the overtly non-case-marked proper name, appear as the embedded subject of (79b)1 The explanation depends on the crucial differencebetween casemarkingand caseassignment to which we are committed. Even though Brendais not overtly marked for case, it must, on our account, be assigned either nominative or accusativecase. But in (79b) there is no caseassigneravailableto assign caseto the subject of the subordinateclause. Consequently, if Brendawere to appear in this position, it would go without being assignedcase, violating the Case Filter and rendering the sentenceungrammatical. Although we have barely scratchedthe surfaceof even one tiny comer of English syntax, we are already able to glimpse the deductive richnessand explanatory depth that one hopes for in the scientificinvestigation of a language. Moreover, the study of aspectsof grammar such as casetheory has come to occupy a prominent position in current syntactic researchbecauseit has turned out that they figure importantly in our understanding of the grammars of many disparate languages. The most ambitious claim we might pursue is that the abstractprinciples that we uncover are universal that they apply to everynatural language. We turn next to this, perhaps the most area of research in . important ongoing linguistic theory 6.4 Universals According to much of current linguistic theory, certain linguistic properties (for example , the CaseFilter and the Maximal Onset Principle; see below) are principles that are reflected by every natural language. Consequently, although certain properties hold for eachindividual language, they are not best understoodas having beencoincidentally written into the grammar of each language. Instead, linguists, following the pioneering work of Chomsky (1965) and Ross (1967), have located such principles in universal grammar (UG). UG is not a grammar in the usual, generative sense of the term. Rather, UG comprisesthe featuresthat are instantiated in the grammarsof all natural languages. Principles of UG are perfectly general, and the rule systems of individual languages will only need to state the idiosyncratic properties of the languagesthey generate. The principles of UG have also been claimed both to playa central role in the acquisition of languageby children and to constitute species-specific, domain-specific, innate properties of mind. The role of the principles of UG in language acquisition is discussedin some depth in chapter 9. For now, it will suffice to emphasizethat these principles are taken to limit the range of hypothesesthat children will normally consider during the courseof acquisition. Let us examinehow this way of conceptualizing the processof languageacquisition proceeds. . When a child is faced with the task of deciphering the pattern revealed by some subsetof sentencesof a language, there will be a number of systemsof rules that are consistentwith the availabledata (for instance, the sentencesthe child is exposedto), although ultimately divergent in the languagesthey generate. The child' s learning problem can be seenas that of figuring out which of thesepossibilities to reject. The principles of UG are thought to aid in this task by delimiting the live options- only those grammarsthat are consistentwith UG will be availableto the child as candidates for capturing the pattern of the language. Without this restriction on hypothesis Linguistics: The Representationof Language 261 fonnation, the child' s task seemsdaunting, and, somelinguists have contended, impossible . Researchand debate concerning the role of UG in languagelearning are at the center of the ongoing work in linguistics and cognitive science. The claim that the principlesof UG are speciesspecificturns on the proposition that only humanshave languageability . Of course, different speciescertainly have effective communicationsystems, and some may even possesssystemsthat are languagelikein significant regards. Yet most cognitive scientists have come to the conclusion that whatever suchabilities amount to , they appearto be distinct from the human capacity (see, for example, Premack1986). In turn, linguists have reasonedthat although the principles of UG may well be (part of) what enableshumans to learn language, the absenceof theseproperties and the learning advantagesthey afford may explain why other organismscannot acquirehuman languages. The principlesof UG have also been assertedto be domain specific- to govern the shapesof grammars and thereby direct the course of language acquisition, but to have no direct impact on other cognitive capacitiesor in other learning domains. This position typically forms a part of the modularitythesisthat ascribesdifferent cognitive abilities to separatefacultiesof mind (seeFodor 1983; Piatelli-Palmerini 1980; Garfield 1987). On this view, sincelanguageis a distinct cognitive capacity, the principlesof its theories should not be expected to characterizeother capacities. This entails that the principles of UG, in particular, are specificto language, and also that the way children learn languagemay be importantly unrelatedto the way they learn anything else. Finally, the principles of UG have been claimed to be innate (see Chomsky 1965, 1980). As such, they are taken to be a part of the organism's biological endowment, ultimately to be identified in tenns of human genetics. The argument, roughly put, is that such principles are not simply inducible from the primary data available to children - yet learnerscannot fonn adequatehypothesesabout their own languageswithout such principles. They must, perforce, be innate. If notions like the CaseFilter are indeeda part of the biological systemthat guides the fonnation of grammars, it should not be surprising to find that abstract case plays a crucial and widespread role in English even though there is little overt evidence for casemarking. We should also find evidencethat thesekinds of principles are at work even in languagesthat exhibit no overt manifestationof casewhatsoever. Such results would be impressiveindeed, and much of current linguistic researchis directed toward uncovering this kind of evidence. Although there are alternative accountsof the relationship between grammars and cognition (seeGazdaret al. 1985), and severalrival accountsof the details of syntactic theory (see Sells 1985; Wasow 1989), much current linguistic researchis directed at working out the details of casetheory and other subtheoriesof generative models of linguistic knowledge. The task of elucidating the properties of universal grammar would be relatively straightforward if all languages uniformly embodied a fixed and unvarying set of principles. But matters are not so simple. The details of caseassignmentvary from languageto language. Syllable structure can vary significantly, and there is no single stresssystem that follows inexorably from principles of metrical structure. Factssuch as these threaten to vitiate the important claims that have been made about UG. Indeed, if part of the empiricalappealof UG was that its claimsare testable againstthe data of any natural language, the failure to accountfor the data of even one languageis deeply problematic. 262 Chapter 6 In an attempt to solve theseproblems, generativelinguists remaincommitted to the view that the grammarsof particular languagesreflect a set of core propertiescaptured by the principles of UG, but hold that thesebasicsare subject to a (limited) degree of variation as well - parameters that mark the range of possiblehuman languages. Before we turn to someexamplesof the principles-and-parametersview of things, an analogy may be useful. Consider the great variety that seemsto exist in handwoven rugs. On entering a rug store, we may be struck by the great wealth of different designs: colors, patterns, and sizesall vary accordingto the country of origin , the maker, and so forth. Yet when we examine the rugs more closely, it is possible to discern some interesting, though much less obvious, similarities. Two rugs that appear when viewed from the usual distance to be constructed from utterly different weaving patterns turn out, when viewed at close range, to be built up from identical knots- which happen to be oriented differently and made from wool of different thicknesses . As thesetwo simple similar at a , certain level of examination) take on strikparametersvary highly rugs ( distinct . The universal linguistic properties that we have ingly superficialappearances consideredmay well have this character- admitting of small variations on relatively abstractparametersthat, from afar, createthe appearanceof great diversity . A Phonological Example According' to the theory we have been describing, many of the identifying details of the world s languagescanbe viewed as small variations on universalthemes. Consider, again, the matter of syllable structure. At the heart of the syllabiAcationprocessis a set of fundamental- and invariant- principles. Many phonologists maintain that universal grammar requiresall languages(as a consequenceof the Maximal Onset Principle, among others) to have at least some syllablesof the form [CV . . . ], with an onset. No language is known to violate this principle. Nevertheless, it is subject to parameterization: some languages, like Klamath, a Native American language of Oregon, require everysyllable to be of this form. Others, like English, pennit someonsetless syllables. Similarly, all languagesexhibit syllableswith vowels at their nucleus. But the : some appearanceof two vowels or of consonantsin nuclearposition is parameterized exhibit vowels or sonorants as , nuclear consonants. Others languages long diphthongs, forbid them and admit only single vowels in the nucleus. Finally, the " coda parameter " regulatesthe appearanceof consonantsin syllable-Analposition. No Axedprinciple determineswhether a languagemust have syllables beginning and ending with con" " sonents (closedsyllables ): they are optional, subject to what we may describe as a " " " " simple yes/ no parameter. Set to yes, the parameterpermits syllableslike [ . . . VC ]; " " English is an example. Set to no, the parameterprohibits them, Hawaiian and Italian " " being casesin point . But if a languagechoosesthe yes option, a core principle of universal grammar still requires that it must also allow open syllables without a Anal consonant. Thus, the range of syllable structuresthat is availableto languagesis quite broad- but still set within rather stringent limits. SomeSyntacticPrinciplesand Parameters The application of the theory of principles and parametersto problems in syntactic analysis has been one of the most important programs of researchin contemporary linguistic theory. Following Chomsky (1986), linguists have decomposedsyntactic theory into a number of subtheories, each one of which contains parameterizedprin- . of Language 263 : TheRepresentation Linguistics ciples that define its core properties. These subtheoriesinclude casetheory, binding theory, boundingtheory, theta theory, and X -bar theory. We have already considered problems in casetheory, which is responsiblefor establishing the principles of case assignment. The central principle in case theory is the Case Filter the (universal) principle that requires that NPs must be assignedcase. In fact, the principle may be more general, for in some languages(for example, Russianand German) it has been proposed that "certain adjectival phrasesare marked for case. Thus, the principle may take the form all XPs must receive case," with the value of X being set somewhat differently for different languages. If this is correct, we would expect languagesall to involve case, but to assignit and mark it in somewhatdifferent ways. Binding theory concernsitself with the anaphoricproperties of pronouns, reflexives, and lexical NPs. These principles capture the structural circumstancesunder which certain expressions(for example, pronouns) can depend on an antecedentfor their interpretation. For example, John and he can be naturally construed to be the same person in (80), but not in (81): (80) John thinks [that Scruffy likes him] (81) Scruffy thinks [that John likes him] One part of binding theory constrainsthe interpretation of personalpronounslike him, as follows: (82) Bindingtheory A pronoun must be free in its local X. . For Pronouns that are free are interpreted independently of potential antecedents that amounts to is . What this to clause out X works , English personal roughly English pronouns cannot depend for their interpretation on antecedentsthat are locally contained in the sameclauseas they are. Thus, him can refer to the sameperson asJohnin 80 because ( ) Johnis the subject of the higher clause, whereashim is the object of the lower clause. In (81) both Johnand him are contained in the sameclause, and so him must be interpreted as being free from John; that is, him and Johncannot refer to the sameperson. Other languagesalso limit the interpretations of pronouns, but in ways that may be somewhatdifferent from the pattern in English. In particular, languagescandiffer in the distributions. In setting for the parameterX in binding theory, producing ' contrasting Icelandic, for example, the personalpronoun hann ' him appears, at first, to follow the English pattern in subordinateclauses: (83) Jon segir aO [ Maria elskarhann] Jon says that Maria loves him The interpretation of (83) is parallel to that of the English translation; JOnand hann can refer to the sameperson. In tenselesssubordinateclauses , however, the patterns diverge: (84) Jon skipaOi mer aO [raka hann] Jon ordered me to shavehim Whereasin the English translation him can refer to Jon, hanncannot refer to Jon in the Icelandic sentence. This is becausein Icelandic the value of the parameterX in the binding theory clausethat applies to pronouns is set differently from the value for 264 Chapter 6 " ' English. The value for Icelandicis tensedclause: meaning that potential antecedents must not be membersof the smallesttensedclausecontaining a corresponding personal pronoun. In (83) hannis in a separatetensedclausefrom Jon. In (84), however, although these two terms are in separateclauses , the smallesttensedclausecontaining Jonalso contains hann. Once again we have profit ably compared and contrasted two different linguistic systemswithin the principles-and-parametersframework of UG. Similar inquiries have also been undertaken into the other subdomainsof linguistics. Bounding theory, for example, concernsitself with how distant a moved elementcan be from its corresponding gap. In some languagesa moved element must appearwithin the sameclauseas does the gap, whereas other languages permit greater distance between the two . is the hypothesizeduniversal principle that establishes theserestrictions on Sublacency movement: (85) Sublacency A moved element may not crossX. where X, as in the previous example, is a parameterthat can be set in a small number of ways (for example, a clauseboundary or two clauseboundaries), specific to each language. Seeif you can figure out what the value for X is in the caseof English. Theta theory is the part of linguistic theory that exploresthe assignmentof thematic rolesto arguments. Thematic roles determine the action structure of the sentenceby distinguishing who is doing what, to whom. For example, if we understandJohnas the agentin (86), then he is taken to be the initiator of the action: (86) John rolled down the hill. It is possible, however, to construeJohnas receiving an action (as a patient), as well, although this interpretation is easierto assignin (87): (87) The rock rolled down the hill. Theta theory is interested in the principles that mediate the assignmentof these roles, and like the other subdomainsof the grammar, it contains principles that are thought to be universal. The central principle of theta theory is the Theta Criterion, which requires that every argument position must be assignedexactly one thematic role. In the caseof (86), for example, this principle entails that if John may be a either the agent or a patient, then he cannot be taken to be both simultaneously, or neither at all. This criterion and the related theory are currently objects of considerableattention by linguists who are exploring the application of theseprinciples (along with any parameterization) acrossthe languagesof the world. Finally, the subdomainof universal grammar that characterizesthe phrasestructure of each natural languagecan also be looked at from the perspective of its principles and parameters. Earlier we noted that although it is possible to write out a phrase structure grammar for each languagethat generatesthe initial phrasemarkersof that language, there are cross-linguistic generalizations in this aspect of grammar that suggestan alternative approach. Indeed, sometime ago linguists noticed that there are regularities in word order and constituent structure both within and acrosslanguages that deserve to be captured by the principles of UG. X-bar theory, which is the universal principle at the heart of this component of the grammar, is an attempt to distill universal principles of phrase structure and constituency. To the extent that Linguistics: The Representationof language 265 X-bar theory succeeds , the phrase structure rules for each languagecan be simplified and will only need to record the featuresof phrasemarkersthat are idiosyncratic in a particular language. Proposedprinciplesinclude the claim that in all languagesa phrase of the form XP must contain an occurrenceof X , which is called the headof the phrase. That is, NPs must contain nouns asheads, VPs must contain verbs asheads, and so on. The ordering of subconstituentswithin a constituent is one locus of variation across languages. In some languagesadjectives follow the noun (for example, Hebrew), in somethey precedeit (for example, English), and in someboth alternativesare possible (for example, French). Nevertheless, there are certain subregularities that generally obtain. For example, languages like Japanese , which is verb-final, also tend to be postpositional (objects of prepositions follow prepositions), contain relative clauses that precedethe noun they modify , and have adjectivesthat precedethe noun. These - the are languagesin which the HeadParameter parameterthat establishes in which or of a constituent its (left ) periphery right phase head will be located- is set to the " " value heads right . In Hebrew, in contrast, where the verb is VP-initial, there are prepositional phrases, relative clausesfollow the nouns they modify , and adjectives follow the noun, the setting is "heads left." Although languagessometimestolerate some exceptions to these ordering generalizations(for example, English- try to set the Head Parameterand note any exceptions!), the Head Parametergenerally makes accuratepredictions about connectedaspectsof word order acrosslanguages. In this regard, it is an important component of the theory of Universal Grammar. to the Theory Challenges 's Chomsky system of UG has been extremely influential in guiding the development of researchprojects in many areasof cognitive science. Yet, like any important idea, the position we have sketchedhas been seriously criticized, &equently amended, and in somecasesjettisoned in favor of alternative &ameworks. We closeour discussionof UG by briefly noting someof the interesting areasof continuing researchon UG, with special attention to the more general psychological and biological claims that have been made for UG. The hypothesized innate universal grammar is often compared ( by Chomsky and " " others) to a bodily organ- albeit a mental organ - that is organized in brain and other neural tissue. Although the details of the biological basisof the linguistic capacity are by no means well understood (see chapter 7), it is often claimed that UG representsa modular, highly specializedcapacity and it is sometimessuggestedthat it has a specializedgenetic basis. That is, the notion of linguistic innatenesshas been taken to meanthat there must have been highly specificnatural selectionin the course of human evolution for the details of UG. This view is sometimesfurther popularized to suggest that there are specific genes for language. But there is little evidence to support this notion. In fact, few organ systemsor behaviors are the products of single genes. There is certainly little basisin contemporary molecularbiology to support the notion that specific informational states, like the CaseFilter or abstract principles of encodedin human chromosomes.The challenge syllabification, could be somehow directly ' s claims then is to reconcile about the biological basis of language , , Chomsky with what is known about genetic mechanismsand evolutionary principles. There is also room for doubt about the claims of speciesspecificity that have been made for the language organ. It has been discovered, for example, that mammals other than humansexhibit categorical ( Kuhl and Miller 1975), the tendency to perception 266 Chapter 6 perceive what are in fact distinct points along a continuum as falling into discrete clumps of data. Humanshave been claimed to rely innately on categoricalperception to distinguish voiced &om voicelesssounds. That is, despite considerableactualacoustic variation, we hear sounds only as voiced or voiceless, with no apparent middle categoriesof perception. Although' it is clear how categorical perception is useful in speechperception, Kuhl and Miller s evidencethat nonhumansexhibit this phenomenon is surprising. Although categoricalperception may not technically qualify as one of the principles of UG (in that it js more a perceptual property than a narrowly linguistic one), findings such as these fuel the hopes of those who maintain that there must be substantial overlap between the cognitive properties of humans and nonhumans. Finally, there are also hesitationsconcerningthe claim that the properties of universal grammar are strictly modular that is, that they pertain only to linguistic representation and acquisition and the like, and do not follow &om more general architectural or other characteristicsof cognition. It is difficult, of course, to attribute broader (or analogous) functions to highly abstract properties like the Case Filter, and the implausibility of this attribution has been taken by some researchersto be strong evidencefor modularity. But much more will needto be known about cognition before we can determine with any conAdencewhether some of the innate mechanismsthat subserve languageturn out to have a broader organismicsignificance. Again, motivation to pursuethis inquiry comes&om the phenomenonof categorical perception, which has also been demonstrated in certain nonlinguistic domains, for example, between certain musicalsoundsrelated on an acousticcontinuum, suchas the plucking and bowing of a violin string (Cutting and Rosner 1974). These results that some capacitiesthat support language learning may not be specifically suggest " " linguistic, but are instead part of more general cognitive capacities. Can this reduction be accomplishedfor the principles of UG1 Certainly the universals we have sketched, for instance, the CaseFilter, do not obviously admit of this kind of account, though further researchmay indeed show that they do follow &om more general aspectsof cognitive architecture. Indeed, researcherslike Lieberman(1985) have argued that all linguistic universalsare ultimately a function of generalbiological mechanisms , a view shared, in certain respects, with Piagetian psychologists. But many generative linguists remain skeptical that the elimination of UG in favor of general biological and cognitive properties is possible, and any strong conclusionsseempremature . Summaryand Reprise Adult learnersof new languagesstruggle (much like linguists) to acquiresome understanding of their language. The struggle will go on for sometime, and it typically ends in an imperfect (if hard-won ) mastery. Very young children learning their first language (or languages) face the same general task, complicated by the limited experiential resourcesof infancy and an apparentlack of any linguistic context in which to embed new knowledge. Despite theselimitations, children enjoy an easeof languagelearning that adults envy. ' The child s courseof learning is not instantaneous , or free from errors and missteps. But there does appearto be a highly systematicpattern to the range of falsestepsthat children take. Moreover, there appearto be types of errors that children learning any language simply do not make. For instance, children learning questions typically go Linguistics: The Representationof Language 267 through several stagesof development, some of which involve utterance types that differ in interesting ways from the adult system. But certain differencesdo not emerge. For instance, children never seem to misjudge the appropriate position of question words on the basis of evidence like I know what Johnate; they do not hypothesize a rule to the effect that question words in English are to be placed in the middle of sentences . In the same vein, children never seem to hypothesize, on the basis of frequent exposureto words with closed syllables, that all English words involve such syllables(by contrast, many children for a considerabletime produce only open syllables ). There is no a priori reason why children do not entertain these alternative hypotheses, yet they fail to do so even in the face of data that are consistent with them. It is intriguing to conclude that they do not do so becausethey cannot, that UG enforces a general constraint on the form of rules that precludes them from " " deducing constructs like the middle of a sentence. Such constraints vastly simplify the learning task by restricting the range of possiblehypotheses. By setting suchlimits on the kinds of knowledge representationthat the organism can learn- whether by highly specificneural constraints, or as a consequenceof more general constraintson development evolution has facilitated the acquisition of the extraordinarily powerful , flexible, and creative systemswe call language. Suggested Readings A broader introduction to linguistic theory and the study of languagein general can ' be found in An Introductionto HumanLanguage (Gee 1993). Severalof Noam Chomskys works also provide an accessibleperspectiveon theoretical issuesand on the intellectual context of recent work; see in particular Rulesand Representations (1980) and and Problems : The Lectures . 1988 The ( ) Language of Knowledge Managua LanguageLottery (Lightfoot 1982) and How to SetParameters (Lightfoot 1991) provide a perspectiveon the biological nature of language, languageacquisition, languagechange, and universal : Descriptionand Theory(Kenstowicz and Kisseberth grammar. GenerativePhonology 1979) and Autosegmental andMetrical Phonology(Goldsmith 1990) provide an introduction to generative phonology. The ProblemBook in Phonology(Halle and Clements 1982) provides a seriesof phonological problems drawn from the languagesof the world . A Coursein Phonetics(Ladefoged 1982) contains background information on articulatory and acoustic phonetics. For work in contemporary syntactic theory, see Introductionto Governmentand Binding(Haegeman1991) and Introductionto the Theory of Grammar( Van Riemsdijk and Williams 1986). Finally, for a comparisonof various es to syntactic theory, seeLectureson Contemporary competing contemporary approach " " Theories Sells 1985 and Grammatical ( ) Syntactic Theory ( Wasow1989). References Alcock . J. ( 1989 ). Animal behavior: An evolutionary approach. Sunder land , Mass .: Sinauer Associates . Chomsky , N . ( 1957 ). Syntactic structures. The Hague : Mouton . Chomsky , N . ( 1965 ). Aspects of the theory of syntax . Cambridge , Mass .: MIT Press. on IanR Chomsky- , N . ( 1975 ). ReFlections . - UR-Re. New York : Pantheon . . New York: Columbia Univenity Press. Chomsky, N . (1980). Rulesand representations : Its nature, origin, and use. New York: Praeger. Chomsky, N . (1986). Knowledgeofl Rnguage : The Managua ltdures. Cambridge, Mass.: MIT Chomsky, N. (1988). Languageand problemsof knowledge Press. 268 6 Chapter and Cutting, J. E., and BS . Rosner(1974). Categoriesand boundariesin speechand music. Perception 16, 564- 570. Psychophysics Fodor, J. A. (1983). Modularityof mind. Cambridge . , Mass.: MIT Press of . Journalof Verbal Fodor, J. A , andT. G. Bever(1965). The psycholinguistic reality linguisticsegments andVerbalBehavior 4, 414- 420. Learning . New York: McGraw-Hill. Fodor, J. A , T. G. Bever, andM. F. Garrett(1975)~Thepsychology oflanguagt and naturallanguage Gameld, J. (1987). Modularityin knowledge . Cambridge , understanding rtprestnlation Mass.: MIT Press . Gazdar . Cambridge , G., E. Klein, G. Pullum , andI. Sag(1985). Generalized , Mass.: struduregrammar phrase . HarvardUniversityPress -Hall. to humanl Rnguage . EnglewoodCliHs, N.J.: Prentice Gee, J. P. (1993). An introduction Goldsmith , J. (1976). An overviewof autosegmental ' c Analysis2, 23- 68. phonology. Linguish andmetrical . Oxford, UK., andCambridge . Goldsmith , J. (1990). Autosegmmtal , Mass.: Blackwell phonology Halle, M., and G. N. dements (1982). Problem : A workbook bookin phonology in for introdudorycourses andmodmzphonology . Cambridge . , Mass.: MIT Press linguistics B. . A 1980 metrical of stress rules . Doctoral , dissertation , MIT, Cambridge ( ) , Mass. Hayes theory B. 1982 . Extra metric and stress . 13 227 276 . , ( ) , Hayes ality Linguistic English Inquiry -basedgeneralizations in Englishphonology. Doctoraldissertation Kahn , D. (1976). Syllable , MIT, Cambrige, Mass. : Description andtheory . New York: Academic Kenstowicz , M., and C. Kisseberth(1979). Generative phonology Press . Kuhl, P., andJ. Miller (1975). Speechperceptionby the chinchilla : Voiced-voicelessdistindion in alveolar consonants . Science 72. 190 69 , plosive in phonetics . 2nd ed. New York: HarcourtBraceJovanovich . , P. (1982). A course Ladefoged Levelt, W. J. M. (1970). A scalingapproachto the studyof syntadicrelations . In F. B. Floresd'Arcaisand W. J. M. Levelt, eds., Adva~ in psycholinguistics . New York: AmericanElsevier . Libennan , M., andA. Prince(1976). On stressandlinguisticrhythm. Linguistic Inquiry8, 249- 336. Lieberman . CambridgeMass.: HarvardUniversityPress . , P. (1985). Thebiologyandevolution of language . . The l . MIT 1982 Mass .: Press . , ( ) Rnguage lotteryCambridge LightfootD . Cambridge . , Mass.: MIT Press LightfootD . (1991). Howto setparameters Marler, P., andV. Shennan . (1985). Innatedifferences in singingbehaviourof sparrowsrearedin isolation from adultconspedficsong. AnimalBehaviour 33, 57- 71. PlateUi Palmarini andlt Rming . Cambridge . , M. (1980). Language , Mass.: HarvardUniversityPress ! Cambridge . Premack , D. (1986). Gavagai , Mass.: MIT Press Prince , A. (1983). Relatingto the grid. Linguistic Inquiry14, 19- 100. to thetheoryof grammar . Cambridge , H. van, and E. Williams(1986). Introduction , Mass.: MIT Riernsdijk . Press Ross , J. R. (1967). Constraintson variablesin syntax. Doctoraldissertation , MIT, Cambridge , Mass. . Linguish Selkirk , E. (1980). The role of prosodiccategoriesin Englishword stress ' c Inquiry11, 563- 605. andsynta .r: TherelRtionbtt Wttnsoundandstrudure . Cambridge Selkirk , E. (1984). Phonology , Mass.: MIT . Press . Palo Alto, Calif.: Centerfor the Study of Sells, P. (1985). Ltdureson contemporary syntactictheories and Information . Language Wasow, T. (1989). Grammaticaltheory. In M. I. Posner science . Cambridge , ed., Foundations , of cognitive Mass.: MIT Press .