PSY 369: Psycholinguistics Review for Exam 1 Cohort model Three stages of word recognition 1) Contact: Activate a set of possible candidates based on initial phonemes 2) Selection: Narrow the search to one candidate using further bottom-up and some top-down information Recognition point (uniqueness point) - point at which a word is unambiguously different from other words and can be recognized 3) Integration: combine the single candidate into semantic and syntactic context Semantic priming effects happen in this stage Cohort model Prior context: “I took the car for a …” /s/ Stage 1 … soap spinach psychologist spin spit sun spank … /sp/ spinach spin spit spank … time Stage 2 /spi/ spinach spin spit … /spin/ spin Stage 3 Comparing the models Each model can account for major findings (e.g., frequency, semantic priming, context), but they do so in different ways. Information flow Search model is serial and bottom-up Logogen is parallel and interactive (information flows up and down) Cohort is bottom-up & parallel initially, then interactive at a later stage The decision process Logogen model – activation increases with no effort In the cohort model, words must be actively rejected from the cohort Homework 1 Two banks in neighboring towns were reported robbed by the state police yesterday. Purpose of question 2: Gain insight to the complexity of a single sentence It feels easy to understand it, But, look how hard it is to consciously analyze the different levels of linguistic information Homework 1 2a) Phonology - useful website: http://www.antimoon.com/how/pronunc-soundsipa.htm Notice, not a one-to-one correspondence between letters and phonemes 3 letters, 2 sounds two banks in diff letters, same sounds diff letters, same sounds neighboring towns were reported robbed by the state police yesterday /t/ /u:/ /b/ /ei/ /N/ /k/ /s/ /i/ /n/ /n/ /ei/ /b/ /o:/ /r/ /i/ /N/ /t/ /au/ /n/ /z/ /w/ /e:/ /r/ /r/ /i:/ /p/ /o:/ /r/ /t/ /e/ /d/ /r/ /a:/ /b/ /d/ /b/ /ai/ /TH/ /^/ /s/ /t/ /ei/ /t/ /p/ /Ou/ /l/ /I:/ /s/ /j/ /e/ /s/ /t/ /e:/ /r/ /d/ /ei/ Homework 1 2b) Morphology two banks in neighboring towns were reported robbed by the state police yesterday Free two bank in neighbor town were report rob by the state police day Bound -s inflectional -ing -s inflectional inflectional -ed -ed inflectional inflectional yester- derivational Homework 1 2c) Syntax: Two banks in neighboring towns were reported robbed by the state police yesterday. 2 different deep structures --transformations--> arrive at same surface structure It was reported by the state police yesterday that two banks in neighboring towns were robbed. It was reported that two banks in neighboring towns were robbed by the state police yesterday. So the tree structures end up attaching the prepositional phrase to one verb or the other in the resulting surface structure. Homework 1 2d&e) Lexical Ambiguity: Two banks in neighboring towns were reported robbed by the state police yesterday. 2 different meanings: RIVER bank, MONEY bank How do we know which meaning? Frequency of meaning? Content of rest of the sentence? “robbed”, do we hold both interpretations until it gets resolved here (6 words later)? Prior Context? A) May is discussing a local newspaper story with her co-worker, Ash, over lunch. B) May, a bank manager, wonders aloud whether she should upgrade the security system in the bank. Ash, the assistant manager says Homework 1 Input Two banks in neighboring towns were reported robbed by the state police yesterday. 2f,g,&h) introspect about comprehension processes involved Language perception b a n k s /b/ /ae/ /n/ /k/ /s/ Word/morpheme recognition dog bank bank wolf tree yarn cat claw fur hat Syntactic analysis Semantic & pragmatic analysis S NP two banks VP PP V were In neighboring towns NP Exam 1 Review Chapters 1,2,3,5. What is language? Psycholinguistics? Kinds of linguistic information Basic cognitive structures and processes Storing and retrieving information about words Exam format: Multiple choice (similar to quizzes) Vocabulary matching Short answer What is “psycholinguistics”? Psycho Linguistics language structure medium of transmission phonetics phonology grammar morphology syntax pragmatics use meaning (semantics) lexicon discourse What is “psycholinguistics”? Psycho Mental Processes - Short Term Memory Long Term Memory Encoding Retrieval Mental Representations Linguistics Linguistic Theory - Phonology - Morphology - Syntax - Semantics - Rules Systems of Communication There are a variety of methods to communicate E.g., Dogs bark, Birds sing, Bees dance People talk - we use language (as well as other methods) for communication How does language differ from other systems of communication? What are the properties of human language? Features of Language (Hockett, 1960) Arbitrariness Displacement Productivity Discreteness Semanticity Duality of patterning Levels of analysis language structure medium of transmission phonetics phonology grammar morphology syntax pragmatics use meaning (semantics) lexicon discourse Phonology The sounds of a language Phonemes, allophones & phones Articulatory features Rules about how to put the sounds together Rule: If /p/ is used in word initial position you add aspiration (a puff of air), if word internal don’t aspirate Morphology Morpheme – smallest unit that conveys meaning “yes” unhappiness horses talking No internal morphological structure y, e, s have no meaning in isolation Internal morphological structure -s -ing happy, horse, talk plural unduration -ness negative state/quality Syntax • More than surface linear position matters, underlying structure is important. S S NP a dog VP NP V bites NP a a man VP V bites man Subject position Object position NP a dog Syntax Generative Grammar The pieces: – Grammatical features of words • Dog: Noun • Bite: Verb – Phrase structure rules - these tell us how to build legal structures • S --> NP VP • VP --> V (NP) • NP --> (A) (ADJ) N Syntax Generative Grammar Recursion: you can embed structures within structures So we NP’s can be embedded within PP’s which in turn may be embedded within NP’s. NP --> (A) (ADJ) N (PP) PP --> Prep NP The dog with the bone of the dinosaur from the cave with the paintings of the animals with fur bit the man. Productivity: The result is an infinite number of syntactic structures from a finite set of pieces Syntax Transformational grammar Chomsky (1957, 1965) Two stages phrase structures for a sentence Build Deep Structure Build from phrase structure rules One constituent at a time S --> NP VP VP --> V (NP) NP --> (A) (ADJ) N Convert to Surface Structure Built from transformations that operate on the deep structure Adding, deleting, moving Operate on entire strings of constituents Semantics Philosophy of meaning Sense and reference “The world’s most famous athlete.” “The athlete making the most endorsement income.” 2 distinct senses, 1 reference Now Over time the senses typically stay the same, while the references may change In the 90’s Semantics Two levels of analysis (and two traditions of psycholinguistic research) Word level (lexical semantics) How do we store words? How are they organized? How do words relate to meaning? Sentence level (compositional semantics) How do word meanings and syntax interact? Pragmatics Sentences do more than just state facts, instead they are uttered to perform actions How to do things with words (J. L. Austin, 1955 lectures) Using registers Conversational implicatures Speech acts Cognitive Psychology Information ‘flows’ from one memory buffer to the next Cognitive Psychology Properties • sensory specific • high capacity • extremely fast decay Information ‘flows’ from one memory buffer to the next Cognitive Psychology Properties • rapid access • limited capacity • fast decay (rehearsal) Information ‘flows’ from one memory buffer to the next Cognitive Psychology Working Memory Information ‘flows’ from one memory buffer to the next Working Memory Working memory instead of STM Cognitive Psychology Properties • Capacity: Unlimited? • Duration: Decay/ interference • Organized Information ‘flows’ from one memory buffer to the next Long term memory: Organization Different memory components, each storing different kinds of information. Declarative episodic - memories about events semantic - knowledge of facts The Multiple Memory Stores Theory Declarative episodic Procedural - memories about how to do things (e.g., the thing that makes you improve at riding a bike with practice. Procedural semantic Storing linguistic information How are words stored? What are they made up of? How are word related to each other? How do we use them? Mental lexicon The representation of words in long term memory Lexical Access: How do we activate (retrieve) the meanings (and other properties) of words? Conceptualizer Thought Formulator Grammatical Encoding Phonological Encoding Articulator Semantic Analysis Lexicon Syntactic Analysis Word Recognition Letter/phoneme Recognition Lexical primitives Word primitives horse horses Need a lot of representations Fast retrieval Morpheme primitives horse barn barns -s barn Economical - fewer representations Slow retrieval - some assembly required Decomposition during comprehension Composition during production Lexical organization How are the lexical representations organized? Alphabetically? Initial phoneme? Semantic categories? Grammatical class? Something more flexible, depending on your needs? Lexical organization Factors that affect organization Phonology Frequency Imageability, concreteness, abstractness Grammatical class Semantics Lexical organization Factors that affect organization Phonology Frequency Imageability, concreteness, abstractness Grammatical class Semantics Lexical organization Another possibility is that there are multiple levels of representation, with different organizations at each level Meaning based representations Grammatical based representations Sound based representations Semantic Networks Semantic Networks Words can be represented as an interconnected network of sense relations Each word is a particular node Connections among nodes represent semantic relationships Semantic Networks Hierarchical Models Collins and Quillian (1969) Animal Bird Robin has feathers can fly has wings eats worms Ostrich has a red breast has skin can move around breathes Fish has fins can swim has gills has long legs is fast can’t fly Semantic Networks Prototypes Rosch, (1973) Some members of a category are better instances of the category than others Fruit: apple vs. pomegranate What makes a prototype? More central semantic features What type of dog is a prototypical dog What are the features of it? We are faster at retrieving prototypes of a category than other members of the category Semantic Networks Spreading activation Collins & Loftus (1975) street Words represented in lexicon as a network of relationships Organization is a web of interconnected nodes in which connections can represent: blue categorical relations degree of association tulips typicality vehicle car bus truck house orange flowers Fire engine fire red apple roses fruit pear Lexical access How do we retrieve the linguistic information from Long-term memory? What factors are involved in retrieving information from the lexicon? Models of lexical retrieval Recognizing a word Input Search for a match cat cat dog cap wolf tree yarn cat claw fur hat Select word Retrieve lexical information Cat cat noun Animal, pet, Meows, furry, Purrs, etc. Lexical access Factors affecting lexical access Frequency Semantic priming Role of prior context Phonological structure Morphological structure Lexical ambiguity Models of lexical access Serial comparison models Search model (Forster, 1976, 1979, 1987, 1989) Parallel comparison models Logogen model (Morton, 1969) Cohort model (Marslen-Wilson, 1987, 1990) Logogen model (Morton 1969) Auditory stimuli Visual stimuli Auditory analysis Visual analysis ‘cat ’ Context system Semantic Attributes Logogen system Available Responses Output buffer Responses ‘cot’ Search model Visual input Pointers Decreasing frequency Entries in order of Access codes Auditory input /kat/ cat Mental lexicon mat cat mouse Cohort model Prior context: “I took the car for a …” /s/ /sp/ … soap spinach psychologist spin spit sun spank … spinach spin spit spank … time /spi/ spinach spin spit … /spin/ spin