Stumpf 's Cognitive-Evaluative Theory of Emotion Rainer Reisenzein and Wolfgang Schonpflug Free University Berlin, Berlin, Germany As a historical contribution to the current cognition-emotion debate in psychology, this article seeks (a) to bring to the readers' attention the largely ignored tradition of cognitive emotion theory within introspective psychology by reviewing what is probably the most clearly formulated cognitive emotion theory of this period, that proposed by Carl Stumpf, and (b) to point out the relevance of Stumpf's contributions to the psychology of emotions for the contemporary cognition-emotion discussion. It is suggested that Stumpf's version of a cognitive-evaluative theory of emotion deserves the serious attention of contemporary investigators and that several of his objections to noncognitive theories of emotion retain theirforce against modern versions of these theories. The relation between emotions and cognitions has become a much-debated topic during recent years, and the American Psychologist has been a major forum for that discussion (e.g., Birnbaum, 1981; Holyoak & Gordon, 1984; Isen, 1984; Lazarus, 1981, 1982, 1984; Lazarus & Smith, 1988; LeDoux, 1989; Leventhal & Scherer, 1987; Oatley& Johnson-Laird, 1987; Russell &Woudzia, 1986; Zajonc, 1980, 1981, 1984; Zajonc, Murphy, &Inglehart, 1989). The two main opposing positions in this debate are those of cognitively oriented emotion theorists, who hold that cognitions (cognitive appraisals) are necessary for emotions (e.g., Lazarus, 1982, 1984), and those of noncognitive or "independent systems" theorists, who deny this claim and hold instead that cognitive appraisals and emotions are independent in principle (e.g., Zajonc, 1980, 1984; Zajonc et al., 1989). In the present article we contribute to the current cognition-emotion debate with a historical study. Such a study seemed to be indicated because, apparently, it is not generally recognized that the cognition-emotion issue has been with psychology since its very beginning as an institutionalized science in the past century, and that the contributions of cognitively oriented introspectionists to the psychology of emotion remain of considerable relevance today. According to the standard account of the history of emotion research, the institutionalized science of psychology began with noncognitive theories of emotion (e.g., James, 1884; Wundt, 1896) and continued with such theories until the cognitive revolution of the 1960s, when a number of theorists—in particular, Magda B. Arnold, Richard S. Lazarus, and Stanley Schachter—revived the ancient tradition of cognitive emotion theory dating back to Aristotle (see, e.g., Averill, 1983; Frijda, 1986; Frijda, Kuipers, & ter Schure, 1989; Lyons, 1980; Mandler, 1984; Solomon, 1988). In this article we show that 34 this historical view is biased, by bringing to the readers' attention the cognitive line of emotion theorizing within introspective psychology, which is largely ignored today (e.g., Brentano, 1874/1971; Husserl, 1901/1975; Stumpf, 1899, 1907a). We concentrate on what we believe to be the most clearly formulated cognitive theory of emotion of this tradition, that proposed by Carl Stumpf (see, in particular, Stumpf, 1899, 1907a). Our main motive for drawing the readers' attention to Stumpf's contributions to the psychology of emotion is not, however, to correct a biased historical account of the history of emotion research. Rather, it is with the belief that, far from being of merely historical interest, Stumpf's views still deserve the serious attention of contemporary investigators. For one reason, Stumpf proposed a highly interesting theory concerning the nature of emotions and their relation to cognitive appraisals. For another reason, the major alternative theories of emotion to which Stumpf stood in opposition—namely, those of James (1884, 1890/1950) and Wundt (1896)—are direct precursors of contemporary noncognitive (or independent systems) theories of emotion (e.g., Buck, 1985; Izard, 1977; LeDoux, 1989;Tomkins, 1980; Zajonc, 1980, 1984; Zajonc et al., 1989), and several of the issues raised by Stumpf in the intellectual exchange with these theorists are of continued relevance to the current cognition-emotion debate. We present (a) a systematic review of Stumpf's cognitive-evaluative theory of emotions, (b) a review of Stumpf's main arguments against the major noncognitive theories of his time, namely, sensualistic (e.g., James, 1890/1950) and mentalistic (e.g., Wundt, 1896) feeling theories, and (c) a discussion of the relevance of Stumpf's views on emotion for the contemporary cognition-emotion debate. Stumpf's Cognitive-Evaluative Theory of Emotion Carl Stumpf (1848-1936), a student of Franz Brentano and Rudolf Hermann Lotze, spent the main part of his Ludy T. Benjamin, Jr. served as action editor for this article. Parts of this article are based on a paper presented at the 36th Congress of the Deutsche Gesellschaft fur Psychologie in Berlin, October 1988. An extended discussion of Stumpf's theory is available in German (Reisenzein, 1992). We would like to thank Jochen Brandtstadter, Richard Lazarus, and Bernard Weiner, as well as the participants of the symposium History of Psychology in Berlin—in particular, Eckart Scheerer—for their useful comments on an earlier version of the article. Correspondence concerning this article should be addressed to Rainer Reisenzein, Department of Psychology (WE 7), Free University Berlin, 1000 Berlin 33, Habelschwerdter AUee 45, Germany. January 1992 • American Psychologist Copyright 1992 by the American Psychological Association, Inc. 0OO3-O66X/92/S2.0O Vol. 47, No. 1,34-45 object (Brentano, 1874/1971, p. 89; Stumpf, 1928; see also Searle, 1983). For example, believing that it rains and believing that it snows are intentional states of the same psychological mode (namely, believing), but they have different objects. In contrast, believing that it rains, desiring that it rains, and being angry that it rains are intentional mental states that have the same object, but each of them represents that object in a different psychological mode. It may be seen as a late vindication of Brentano that intentionality as a mark of (some) mental states has again become a central issue in the contemporary philosophy of mind (e.g., Chisholm, 1967; Mackie, 1975; Mohanty, 1986; Sayre, 1986; Searle, 1983). Contemporary philosophers typically see the essential feature of intentional mental states in their being representational states having semantic properties; that is, they represent something by virtue of their content and may thereby refer to items in the world (e.g., Bieri, 1986; Fodor, 1981, 1987; Searle, 1983). However, in contrast to Stumpf, who followed Brentano in assuming—albeit with certain reservations (Stumpf, 1916)—that all mental states are intentional, most contemporary philosophers of mind agree with Husserl (1901/1975) that only a subset of mental states are intentional. In particular, sensations and other "raw feels" are usually not regarded as intentional mental states today (Rorty, 1979; Searle, 1983). Furthermore, Stumpf divided the totality of mental states into two broad categories, labeled by the technical terms intellectual and affective (Stumpf, 1928; see also Stumpf, 1907b). Each category was thought to comprise a number of subcategories. Concerning intellectual states, the subcategory most important to the present review The Nature and Classification of Mental States comprises various types of beliefs (called judgments by According to Stumpf (1907b), the mind can be concepStumpf). Concerning the affective category, it was further tualized as "the totality of mental states and dispositions subdivided by Stumpf into (a) active affective states or . . . [which] are lawfully connected among one another, desires, which comprise nonperformative or optative their contents, and their non-conscious or non-psycho(Green, 1986) desires (i.e., desires or wishes to the effect logical determinants" (pp. 8-9; see also Stumpf, 1924, p. that something should or should not be the case) as well 48).' Nondispositional, or as we will say occurrent (e.g., as motivational desires (desires to do something) and voLyons, 1980), mental states were for Stumpf first and litional states (intentions, willings); and (b) passive affecforemost conscious mental events accessible to introtive states, which comprise what could be called occurrent spection, but he accepted that it is legitimate to postulate pro-evaluations and con-evaluations, or approvals and unconscious mental events as theoretical entities, if doing disapprovals of a (past, present, future, or merely possible) so seems to be required for explanatory reasons (Stumpf, state of affairs. Stumpf (1907a) characterized these eval1899, 1907b). Furthermore, following Brentano (1874/ uations as "affective attitudes . . . which we call accep1955), Stumpf held that a characteristic feature of mental tance or rejection" (p. 15); Brentano (1874/1971) spoke states is their intentionality (Husserl, 1901/1975) or object of the appraisal of an object as "good pleasurable" versus directedness. As Brentano illustrated this feature of men"bad unpleasurable" (pp. 88-89). tal states, if one, for example, perceives, believes, desires, It must be emphasized that intellectual and affective loves, or hates, one always perceives, believes, desires, loves mental states were regarded by Stumpf, in accord with or hates something. This something (which may not ac- Brentano, asfundamentally different psychological modes, tually exist) is the intentional object of the respective or kinds of intentional relations of individual to object, mental state. Intentional mental states can therefore be which cannot be reduced to one another. In particular, construed as special types of relations between the person the affective states cannot be reduced to evaluative beliefs, and the object of the mental state (Brentano, 1874/1955); that is, beliefs having evaluative contents (the latter are different intentional states can differ with regard either to their objects or to the kind of intentional relation, the 1 "mode of mental apperception," that links person and All translations from German are ours. academic career (1894-1921) as professor of philosophy and director of the Institute of Experimental Psychology at the Friedrich-Wilhelm University, Berlin. Reflecting these positions, his publications cover a diversity of themes in philosophy as well as in theoretical and empirical psychology (cf. Stumpf, 1924, pp. 58-61). Concerning the latter, he is best known for his fundamental contributions to the psychology of music and tone (e.g., Stumpf, 1883, 1890), which continue to be given at least passing reference in the contemporary literature (e.g., Krumhansl, 1991). In general, however, Stumpf has become a "nearly forgotten psychologist" (Sprung, Sprung, & Kernchen, 1986, p. 509), even in German psychology. He is much less well-known today than, for example, are his students Kurt Koffka, Wolfgang Kohler, Kurt Lewin, and Max Wertheimer, the founders of the Berlin school of Gestalt psychology, and Edmund Husserl, the founder of phenomenology. The cognitive-evaluative theory of emotions was first presented by Stumpf in an article published in 1899. The complementary theory of affective sensations was proposed eight years later (Stumpf, 1907a); this theory was defended against various criticisms by Stumpf (1916). The three articles just mentioned were reprinted in 1928 as a separate volume, together with an introduction containing further clarifying remarks (Stumpf, 1928). The present review is mainly based on these writings, but additional material (Stumpf, 1907b, 1907c, 1924) was also considered when it helped to clarify pertinent issues. To get a firm grasp of Stumpf's theory of emotion, it is essential to know his general views on the nature and classification of mental states. January 1992 • American Psychologist 35 simply a subspecies of belief; see also Brentano 1874/ 1971). According to Stumpf, for example, wishing that it should rain (a nonperformative desire) is a mental state quite different from believing that it would be good if it rained; desiring to take a walk (a performative desire) is different from believing that it would be desirable to take a walk; and most important, taking a pro-evaluative or con-evaluative stance toward a state of affairs is to be distinguished from thinking it good or bad that this state of affairs obtains. Thus, Stumpf's pro-evaluations and con-evaluations were conceptualized by him as unique psychological modes of relating to objects that are fundamentally different from the believing mode, even though pro-evaluations and con-evaluations may be caused by, or may cause, evaluative beliefs (and this may, in fact, be a reason why these two kinds of mental states tend to be confused). This does not mean, however, that all types of intentional states were held to be irreducible to more basic ones. On the contrary, according to Stumpf, emotions can be reduced to beliefs and evaluations. Stumpf's assumption that performative and nonperformative desires and in particular pro-evaluations and con-evaluations are fundamentally different from beliefs, including evaluative beliefs, must be regarded as a fundamental postulate of his theory of emotion; therefore, its tenability can perhaps be judged only by the overall success of the theory in explaining emotions. However, it should at least be noted that this assumption is fairly well in accord with current theorizing in the philosophy of mind. Many contemporary philosophers think not only "that belief and desire are somehow the basic intentional states" (Searle, 1983, p. 29), but that desires, wishes, and action tendencies are different from and not reducible to (evaluative) beliefs (Marks, 1986; at least implicitly, this assumption seems to be shared by many contemporary psychologists in the areas of emotion and motivation; see, e.g.,Frijda, 1986; Kuhl, 1983). In fact, this consideration has recently given rise to a new class of cognitively oriented emotion theories, which seek to analyze emotions in terms of beliefs and (nonperformative) desires (e.g., Green, 1986; Marks, 1982; Searle, 1983). In contrast to these recent belief-desire theories of emotion, however, Stumpf (1899, 1928) thought that the central evaluative elements of emotions, namely, occurrent pro-evaluations and con-evaluations, are not reducible to desires or wishes (desiring or wishing that something should or should not be the case; for a recent discussion of this issue that might have found Stumpf's approval, see Baier, 1986). For although pro-evaluations and conevaluations were regarded by Stumpf as being more similar to desires and wishes than to beliefs, he thought that desires, in contrast to pro-evaluations and con-evaluations, involve a phenomenologically salient, if difficultto-define, irreducible element of "things should be in a certain way" (Stumpf, 1928, p. XV). Perhaps one could add that pro-evaluations and con-evaluations are those kinds of unique psychological modes of relating to objects that arise if desires are believed to have been fulfilled or frustrated. 36 The Nature of Emotions According to Stumpf (1899), an emotion is "a passive affective state which is directed at a judged state of affairs" (p. 56). As mentioned earlier, the term passive affective state designates an occurrent intentional pro- or conevaluation, or approval or disapproval, of an object or a state of affairs. That this evaluation is "directed at a judged state of affairs" means that the evaluation is "based on a judgment" (Stumpf, 1899, p. 49), that is, an occurrent belief, opinion, conviction, or supposition. Closer examination reveals that Stumpf regarded the relation between beliefs and evaluations, more precisely, as being twofold: First, there is a causal connection between these mental states; that is, the beliefs (or, more precisely, a person's coming to hold the beliefs) cause the evaluations; they "belong to the conditions which produce [evaluations]" (Stumpf, 1899, p. 58). Second, there is a semantic relation between the contents of the beliefs and evaluations: Evaluations are directed at the same state of affairs that is also the object of the beliefs. Hence, whereas causal connections link beliefs and evaluations at the physical level (i.e., at the level of their biological realization or instantiation), identical—or at least partly overlapping— contents are the glue whereby these mental states are held together at the semantic level (see also Rey, 1983). As described so far, Stumpf's theory of emotion permits the interpretation that emotions are just evaluations and, hence, that emotions could occur or could be produced, at least in principle (e.g., in experiments using direct brain stimulation), in noncognitive ways (cf. Zajonc, 1980, 1984). Stumpf (1899), however, did not think so. Rather, he noted, I would not admit, however, that the intellectual states are only [emphasis added] causes of emotions. . . . Envy comprises the presentation (Vorstellung) and judgment of the good concerned as one belonging to the fellow human, and it exists only as long as these intellectual elements do exist; they belong to its substance. If the presentation disappears or the judgment changes, the affect disappears or changes as well, even though in many cases aftereffects and sensory repercussions may remain, (p. 58) It is evident from this quotation that beliefs were regarded by Stumpf not just as the typical causes of emotions (i.e., evaluations), but as derinitionally necessary causal conditions: "The presence of an emotion-relevant judgment is essential to the definition [of emotions]" (Stumpf, 1907b, p. 27). That is, even though there may be evaluations that are produced in other ways than through beliefs (as Stumpf, in fact, assumed in 1899), Stumpf thought that such noncognitively caused evaluations are not proper emotions: An evaluation is a proper emotion only if the appropriate beliefs are also present and causally effective in the right way. One reason Stumpf adopted this view was that he believed that the discriminating features of affects consist primarily of "differences of the presentations and judgments underlying the [evaluations]" (Stumpf, 1899, p. 95). This assumption entails that cognitions (beliefs) are necessary for the definition of different types of emotion. January 1992 • American Psychologist Note that Stumpf did not propose, as do some contemporary theorists (e.g., Frijda et al., 1989; JohnsonLaird & Oatley, 1989; Lazarus, Kanner, & Folkman, 1980; Ortony & Clore, 1989), that emotions are complexes of mental states consisting of several elements (in Stumpf's case, beliefs and evaluations) and, hence, that beliefs are related to emotions as part to whole. Not only does Stumpf (1899, 1907b) caution against this possible misunderstanding of his position, but his assumption that beliefs are causes of emotions implies that he could not have accepted this view without rejecting what is generally regarded—at least since Hume (cf. Mackie, 1974)—as an indispensable ingredient of an acceptable scientific concept of causality (and is, in fact, also well in accord with our everyday concept of causality), namely, that cause and effect must be distinct singular events. According to this principle—which one must accept, among other reasons, if one wants to rule out self-causation— an event cannot be a cause of another event of which it is a part; in this case the effect would subsume the cause, implying that the cause partly causes itself. Rather, emotions are belief-caused evaluations, that is, that subclass of evaluations that have the appropriate causal history, that is, they have been caused by appropriate beliefs regarding the object of the emotion. In modern terminology, emotions are in part functionally specified evaluations, that is, evaluations that are partly defined by reference to their causes, analogous to, for example, the definition of "sunburn" as an "inflammation of the skin caused by over-exposure to sunlight" (Gordon, 1978, p. 125). Note that such a functional definition of emotions is in accord both with the functionalist view of mental states (see Block, 1980; Fodor, 1975)—which is regarded by many as the metaphysical backbone of contemporary cognitivism—and with the views of several earlier and later emotion theorists. Already Aristotle (1980) defined fear as a kind of displeasure or perturbation arising from the idea of impending evil; Descartes (1649/1984) defined several of his nonbasic emotions as subtypes of basic feelings whose discriminating features consist in their being caused by particular types of appraisals; and Arnold (1970) defined emotion in general as "a felt tendency toward anything appraised as good, and away from anything appraised as bad" (p. 176; for further examples, see Davidson, 1976; Gordon, 1974; Lyons, 1980; Searle, 1983; Wilson, 1972). We can therefore render Stumpf's proposal concerning the nature of emotions in the following final form: An emotion is an occurrent pro- or con-evaluation of a state of affairs, which is (a) caused by beliefs and (b) semantically linked to their contents. To use Stumpf's example, envy may be (roughly) defined as an occurrent con-evaluation (a disapproval) of another person's possessing a desired good that one lacks, which is caused, in part at least, by the belief that the other person possesses that good, whereas one lacks it oneself. Similarly, pride may be (roughly) defined as an occurrent pro-evaluation (an approval) of a state of affairs or an object, caused in part by the beliefs that this state of affairs or object exists January 1992 • American Psychologist and that it is relevantly "connected" to oneself (Searle, 1983). In many cases, this latter belief takes the more specific form of believing that one has been causally responsible for bringing about this state of affairs (Weiner, 1986). The writings of Descartes and Spinoza, to which Stumpf referred, as well as recent research on cognitive appraisals in emotion, suggests to us that this kind of belief-evaluation analysis of emotions may in principle be possible for a wide range of affects (see, e.g., Frijda et al., 1989; Ortony, Clore, & Collins, 1988; Reisenzein & Hofmann, 1990; Roseman, 1984; Scherer, 1984; Searle, 1983; Smith & Ellsworth, 1985; Solomon, 1976; Weiner, 1986; Wierzbicka, 1972). Additional Clarifications and Elaborations Stumpf further clarified the core tenet of his theory the following significant respects: 1. Concerning the belief component of emotional appraisals (judgments), Stumpf emphasized—much in line with Lazarus (1982)—that the term judgment must be understood in a broad sense. Emotion-relevant judgments must not be restricted to consciously made evaluative judgments or to hypothetical or categorical judgments in the logical sense. Rather, "already the very first beginnings of nondeliberate apperception and interpretation of sense-impressions" (Stumpf, 1899, p. 51) are to be regarded as judgments. Elementary judgments are already involved in spatial orientation, in the distinction of one's own body from other objects, in the recognition of objects, the apperception of similarities and differences, and the expectation of similar future cases on the basis of earlier ones. "Psychology," Stumpf (1899) wrote, "will hardly be able to make do without this generalization [of the concept of judgment], even though one may disagree about the best label" (p. 51). Furthermore, judgments can appear in consciousness in very indeterminate and weak forms, and an occurrent evaluative reaction can continue even after the judgment is no longer at the focus of consciousness, as presumably is often the case with moods. However, the affective state in the latter case is then no longer of exactly the same kind as proper emotions. Finally, to account for some apparently problematic cases, one may potentially make use of the "auxiliary concept of unconscious presentations and judgments" (Stumpf, 1899, p. 50). 2. The assumption that both emotions themselves and their building blocks (beliefs and evaluations) are representational mental states presupposes that there exists an internal system of representation (Fodor, 1975). Apparently, for Stumpf the most important emotion-relevant representational system was language: Usually the state of affairs at which emotions are directed are mentally represented as affirmative sentences. However, Neither linguistic formulations, nor universal concepts are absolutely necessary for [emotion-relevant] judgments. Thus, a cognized or believed state of affairs, which we would linguistically express by means of an affirmative sentence, and which we would think with the help of concepts, can also be represented in consciousness unformulated. (Stumpf, 1928, p. XIII) 37 That is at least without being formulated in a natural language. Whereas Stumpf (1928) was referring to a sensory or imaginal system of representation, contemporary emotion theorists generally prefer to assume a languageindependent, but nevertheless importantly languagelike, propositional medium of representation (e.g., Mandler, 1984; Oatley & Johnson-Laird, 1987; see also Fodor, 1975, 1981). Because emotionally relevant cognitions are, in principle, language independent, it is possible that prelinguistic infants as well as animals have emotions. That they do in fact have at least simple emotions is, according to Stumpf (1928), evident to everybody who is not prejudiced in favor of behavioristic notions. 3. As has already been mentioned, it is primarily the judgments (beliefs) on which the differentiation between affects is based. Although evaluations make up the core of emotion, the differentiation that they provide is relatively crude (essentially, positive vs. negative); hence, the remaining differentiations between emotions must be due to beliefs: A present, past, or future state of affairs [must] be cognized or represented as such if an emotion is to arise, a n d . . . the quality of the emotion depends primarily on how this state of affairs is represented in our thinking. (Stumpf, 1899, p. 54) Because cognitions are the primary discriminating features of the emotions, they are also (together with evaluations) the natural principle of classification of emotions into larger groups. In fact, we already distinguish in common sense, for example, between affects that are directed at present, past, and future states of affairs; affects that concern beneficial and those that concern harmful events; and affects that are about our own versus others' welfare (Stumpf, 1899). 4. Finally, Stumpf (1899) noted that his theory has an obvious ontogenetic implication: Any particular emotion can only arise once its cognitive basis is present. For example, a child can only experience envy once he or she is capable of forming a belief to the effect that a desired good belongs to a fellow human. Because Stumpf (1899) believed that newborns lack the cognitive prerequisites of emotions ("the occurrence of a proper emotion presupposes a certain amount of cognitive development," p. 51), he held against Wundt that genuine emotions cannot be attributed to them. This proposal seems to be supported by more recent developmental evidence (e.g., Averill, 1982; Frijda, 1986; Rozin & Fallon, 1987). Stumpf s Arguments Against Noncognitive Theories of Emotion and His Theory of Affective Sensations Stumpf (1899) attempted to support his cognitive-evaluative theory of emotions both directly, by trying to show that it was consistent with the available evidence and that it explained the most important facts about emotions, and indirectly, by trying to demonstrate that the major existing alternative theories of emotion were inadequate. Concerning the evidence for his theory, Stumpf emphasized that it explained a variety of salient aspects of emo38 tions. In particular, it explained the intentionality of emotions, and it gave a plausible account of their differentiation and discrimination; it explained the dependence of emotions on desires and beliefs and their modifiability by a change of these mental states; and it explained the links of emotion to motivation. In addition, Stumpf (1899) took it to be a strength of his theory that—in contrast to the theories of Wundt and James—it was in fundamental agreement with both common sense and with what he and Brentano (1874/1971) regarded as the dominant traditional line of emotion theorizing: the cognitive tradition exemplified by Aristotle, Thomas Aquinas, Descartes, and Spinoza. Although the "surprisal value" of the theory is therefore moderate, Stumpf (1899) held that "absolute originality . . . in matters which were open to introspection at all times would be a recommendation of the inventiveness of the author, but not of his case" (p. 67). Stumpf's main concern, however, was with refuting the major competing emotion theories of his time. Similar to those of today, these theories were variants of a special class of noncognitive theories of emotion that can collectively be called emotional feeling theories (Alston, 1972). The basic tenet of these theories is that emotions are certain kinds of conscious qualities that are, in many respects, similar to sensory qualities such as sensations of color, odor, and taste. How close this similarity to sensations is perceived to be depends on the specific version of feeling theory. According to the first, sensualistic (Titchener, 1908) variant, the emotional qualities at stake are in fact nothing but a special class of sensations or perceptions (or patterns, complexes, etc., of these), namely, sensations or perceptions that originate from peripheral bodily events (e.g., James, 1884, 1890/1950). According to the second version of feeling theory, which may be termed centralist or mentalist and which found its most prominent proponent in Stumpf's contemporary, Wundt (1896), the emotional qualities are not reducible to peripherally caused sensations. Their physiological source was later located, for example, in the thalamus (Cannon, 1927) or the limbic system (Papez, 1937). Stumpf s Objections to Sensualistic Feeling Theories Stumpf's (1899) main objections to sensualistic feeling theories of emotion were as follows: (a) There is no correspondence between the multitude of emotions, on the one hand, and patterns of peripheral bodily changes, on the other hand, with regard to quality, intensity, and temporal course (cf. Cannon, 1927; see also Averill, 1982, concerning temporal course); (b) even if differentiated patterns of bodily changes corresponding to the different emotions existed, they are probably not represented in consciousness (cf. Zillmann, 1978); (c) it is unclear what adaptational value would accrue from a brain that is "like a tube through which every [emotional] stimulus drop immediately drains to the periphery" (p. 82). On the contrary, we must count ourselves "lucky that we do not react so sensitively" (p. 83); and (d) "a definition must be convertible" (p. 84); thus, if emotions are identified January 1992 • American Psychologist with organic sensations without any qualification, then all organic sensations are, conversely, emotions, and one would have to "subsume under the concept of emotion . . . heart-burn, feelings of hunger and of satiation, of heat and chill" (p. 84; see also, Pitcher 1965). Unless the sensualistic theorists are prepared to accept this consequence (and few are), they can identify emotions with only a subclass of (complexes of) organic sensations. But this suggestion founders on the fact that the clear phenomenal difference between the mental states ordinarily regarded as emotions (e.g., anger) and nonemotional organic sensations (e.g., heartbeat) is not paralleled by a similarly compelling difference in felt quality between two classes of organic sensations (emotional and nonemotional ones). For the sensualistic feeling theory of emotions requires that such a difference exists. It seems to us that none of the proponents of contemporary variants of sensualistic emotion theories (e.g., Izard, 1977; Leventhal, 1984; Tomkins, 1962, 1980) has provided a fully convincing answer to these objections. Consider, for example, how contemporary sensualistic theories (that focus mostly on facial feedback) try to distinguish emotional from nonemotional bodily sensations. Typically, relational criteria are being used. It is suggested, for instance, that only facial feedback (or its activated mental representation) that is self-produced, spontaneous, or congruent with feed-forward feedback (e.g., Laird, 1974; Leventhal, 1984) leads to an emotional feeling. It remains quite unclear, however, what makes a spontaneous or self-produced organic sensation emotional, and clearly there are facial expressions that meet these criteria but are not emotional at all. Stumpfs Critique of Mentalistic Feeling Theories and His Theory of Affective Sensations The problem of sense-feelings. The affective phenomena that Stumpf (1899) primarily had in mind when he developed his theory of emotion, which that theory was first and foremost intended to explain, were paradigmatic emotions, that is, they were the referents of ordinary language emotion terms—such as joy, sorrow, anger, hope, and fear—"concerning which there can be no dispute that they belong to the concept of emotion" (p. 50). He also thought that the theory was applicable, with some reservations, to mood states. There remained, however, at least one class of prima facie affective phenomena that could not be well accounted for by the theory, the socalled Sinnesgefuhle (sense-feelings; Titchener, 1908). The term was used by Stumpf (1907a) as a "theory-neutral" expression to denote the various sensory pleasures and displeasures, including purely bodily pains and the pleasurable sensations of bodily well-being in its more general and more special forms (the latter include the pleasure component in tickling, the feeling associated with itching, and sexual pleasure feelings), as well as the pleasure and displeasure that may be connected with elementary sensations of the "special senses," such as temperature, odors, tastes, tones, and colors (Stumpf, 1907a) as well as with organic sensations (Stumpf, 1899). January 1992 • American Psychologist The problem of the nature of sensory pleasures and displeasures and their relation to paradigmatic emotions acquired its particular significance from the fact that it was precisely these affective phenomena with which Wundt and his followers were primarily concerned; on the analysis of these affective phenomena they founded their alternative view of emotions (see also Lehmann, 1914; Titchener, 1908). Despite the fact that comparatively little systematic effort was devoted by these researchers to the study of paradigmatic emotions such as anger, fear, and joy, Wundt (1896) held that not only are feelings of pleasure and displeasure—together with the feelings of arousal, depression, tension, and relaxation— the simplest affective elements of consciousness, but that paradigmatic emotions are complex combinations or fusions of these elementary feelings (Wundt, 1896; see also Titchener, 1908). Stumpf's original view of sense-feelings. In 1899, Stumpf had not only distinguished organic sensations from emotions, but had resisted the "general scientific desire for utmost reduction" (p. 58) and had also kept emotions distinct from sensory pleasures and displeasures. Although at that time he still classified these latter feelings among the class of intentional evaluative states— following Brentano (1874/1971)—Stumpf believed that sensory feelings of pleasure and displeasure are, in contrast to paradigmatic emotions, directly caused by sensations, that is, without mediating cognitions (beliefs). Therefore, he held that they do not count as proper emotions (for more on this issue, see the next section). Stumpf's revised view of sense-feelings: The theory of affective sensations. Yet, according to the position held by Stumpf in 1899, sense-feelings still belonged to the class of intentional evaluative phenomena (i.e., the passive affective states) and, hence, were similar to proand con-evaluations, desires, and wishes. They were not "true" emotions only because, other than the latter kinds of mental states, they were not caused by beliefs. This view must have appeared increasingly problematic to Stumpf during the following years, and in 1907a, he proposed a more radical difference between emotions and sense-feelings (see also Titchener, 1908, for an English review). Now he posited that sense-feelings are not evaluative states at all, but rather sensations of a special kind, like sensations of color, odor, and tones (although, in contrast to the latter, they may well be centrally generated; see also Stumpf, 1916). To support his view, Stumpf (1907a) carefully compared the various sense-feelings on several phenomenological dimensions and concluded that there are, at best, gradual differences between sensory pleasures and displeasures and ordinary sensations on these dimensions, whereas there are fundamental differences between sense-feelings and emotions, even though feelings of pleasure and displeasure may occasionally cause, be caused by, or accompany emotions, and although they may be related to emotions both phylogenetically and ontogenetically (for more detail, see Titchener, 1908). Therefore, Stumpf (1907a) concluded, the view that sense-feelings are but a special class of sensations 39 is the most tenable or, at any rate, the most parsimonious one to take. Although Stumpf' s thesis was accepted by some of his contemporaries, it was rejected by others (cf. Stumpf, 1916), including his teacher Brentano (1907/1979). (Brentano proposed that sensory pleasures and displeasures should be regarded as intentional evaluations that, however, have as their objects mental states, namely, the experiencing of certain sensations [see also Chisholm, 1979, and for a related contemporary view, Hall, 1989].) When considered from the perspective of Stumpf's cognitive-evaluative theory of emotion, however, Stumpf's position is not an unreasonable one to take. For whatever else Stumpf's (1907a) analyses do or do not show, they certainly do support his conclusion that, phenomenologically, sense-feelings resemble ordinary sensations much more than they resemble intentional evaluations and wishes—the kinds of mental states with which emotions were associated (Stumpf, 1899). And, Stumpf (1907a) argued, the idea that emotions (i.e., belief-caused evaluations) are somehow built up from primitive, sensationlike feelings is just as implausible as the theory that complex perceptions, judgments, and thoughts are somehow built up from elementary sensations. "Time will come," Stumpf (1907a) wrote, "when the difference in principle between emotions and sensations, including affective sensations, will be regarded as being just as evident as is, already today, the difference between sensations and thoughts" (pp. 7-8). Sensory pleasures and displeasures as nonrepresentational mental states. The quotation at the end of the last paragraph points to a different and perhaps more compelling argument to defend Stumpf's thesis that emotions are fundamentally different from sensations, including sensory pleasures and displeasures. This argument had already been presented by Husserl (1901/ 1975), a student of both Brentano and Stumpf, several years before Stumpf's (1907a) article and has been reiterated by several more recent philosophers of mind (e.g., Kenny, 1963; Pitcher, 1965; Solomon, 1976). As has been mentioned, in contrast to Stumpf and Brentano, contemporary philosophers of mind widely agree with Husserl that sensations of tastes, tones, and so forth, including pain, are not at all intentionally directed at an object (see, e.g., Rorty, 1979; Searle, 1983). For it does not seem possible for these states to be intentionally directed at objects beyond themselves, as are beliefs and evaluations, and according to Stumpf, emotions. To illustrate, if one experiences bodily pain, one does not feel pain of or about something in the same sense as when one is afraid of or angry about something (see also Searle, 1983). (One must not confuse the phenomenal localization of pain—e.g., "my foot hurts"—with intentionality.) If this holds true of feelings of sensory pleasure and displeasure in general, as Husserl (1901/1975) proposed, then the difference between these feelings and paradigmatic emotions is just as fundamental as that between nonrepresentational and representational states of mind. Inasmuch as these considerations reinforce Stumpf's 40 (1907a) conclusion that sense-feelings cannot be assimilated to evaluations, his suggestion to classify them as a special class of sensations seems certainly worth considering. It has in fact been revived by contemporary emotion theorists (e.g., Lazarus & Smith, 1988). Taking into account the distinction between representational and nonrepresentational mental states (Husserl, 1901/1975), we would then arrive at a modified, fourfold classification of mental states into cognitive versus affective intentional states (Stumpf, 1928) and nonintentional, nonaffective and affective raw feels (Stumpf, 1907a). Significance of Stumpf s Views on Emotions for the Contemporary CognitionEmotion Discussion Today, more than 90 years after Stumpf's (1899) article was published, cognitive theories of emotion have become a central paradigm of emotion research, and in their wake the issue of the relation between cognitions and emotions has become a central topic of research and theoretical discussion. Yet, Stumpf's contributions to the psychology of emotion have not been outdated by these recent developments. Rather than merely anticipating the major tenets of contemporary cognitive emotion theories, Stumpf goes beyond these theories in several respects. Not only is his cognitive-evaluative theory of emotions more lucidly formulated than many a contemporary theory (with regard, in particular, to the central issues of the nature of cognitive appraisals and of emotions and the relation between these mental states), it constitutes a thoroughly interesting alternative to existing cognitive theories. At any rate, however, Stumpf's views on emotion raise a number of issues that, although of central significance to the cognition-emotion problem, have only been given marginal attention in the recent discussions. To document this claim, we will examine three such issues in more detail: the intentionality of emotions, the nature of evaluations in cognitive appraisals, and the nature of the relation between cognitions and emotions, with special consideration of the precise sense in which cognitions may be necessary for emotions. The Intentionality of Emotions Stumpf assumed—in line with his teacher Brentano, with Husserl, and with a number of contemporary philosophers (e.g., Green, 1986; Searle, 1983; Solomon, 1976)—that emotions are intrinsically intentional or representational mental states just as are beliefs and desires. If this assumption is correct, it would have far-reaching consequences for the question of the nature of emotional states. Not only would it be—as discussed earlier in this article— a very serious, if not fatal, objection against all those noncognitive theories of emotion that identify emotions with bodily sensations (e.g., James, 1890/1950), facial feedback (e.g., Tomkins, 1962; Izard, 1977), centrally generated "feelings" (e.g., Buck, 1985; Zajonc, 1980; Zajonc et al., 1989; see also Leventhal, 1984), or other nonrepresentational raw feels, it would also pose a serious challenge January 1992 • American Psychologist to several popular cognitive theories of emotion. These include all those that, although taking cognitive appraisals to be causally or even definitionally necessary for emotions (see below), regard the emotions themselves as either nonrepresentational mental states (e.g., as feelings of arousal [e.g., Lyons, 1980; see also Schachter, 1964] or mental qualities [e.g., Oatley & Johnson-Laird, 1987; Pekrun, 1988]), or as action tendencies (e.g., Arnold, 1970; Frijda, 1986). As concerns the latter theories, although action tendencies certainly do qualify as intentional mental states, they do not have the "right" objects, that is, their objects are different from those of the emotions with which they are identified in these theories. For example, the intentional objects of the desire to flee in the case of fear or to attack in the case of anger (namely, the actions of fleeing or attacking, respectively) are different from what are most naturally construed as the intentional objects of the corresponding emotions (e.g., that one may be harmed in the case of fear or that one has been offended in the case of anger). Therefore, although fear and anger may give rise to such action tendencies, it is hard to see how the action tendencies could be identified with the emotions. Given the significance of the issue of the intentionality of emotions, it is surprising that it has received only the most cursory attention by contemporary emotion psychologists and has played practically no role in the recent cognition-emotion debate. The reason may be that most contemporary psychologists, even cognitively oriented ones, assume at least implicitly that intentionality is not an intrinsic but only a derived feature of emotions, that is, a feature that accrues to many or most emotion instances only because they are associated with cognitive appraisals (e.g., Frijda, 1986; Johnson-Laird & Oatley, 1989). Principled expositions and defenses of this nonrepresentational view of emotions are hard to come by, however, and the standard argument advanced in its support—that emotions cannot be intrinsically intentional because there are cases of objectless emotions, such as objectless anxiety and some mood states (e.g., JohnsonLaird & Oatley, 1989; Storring, 1922)—is by no means convincing. So-called objectless fears may not completely lack objects; rather, their objects may only be ill defined, vague, or difficult to verbalize (e.g., a "feeling of dread that something awful is going to happen" [italics added; Oatley, 1988, p. 357]). As to moods, it can be plausibly argued that they constitute cases in which the person appraises, simultaneously or in rapid sequence, many different states of affairs, making it difficult or impossible to single out any particular one as the object of the mood state (e.g., Isen, 1984; see also Ortony & Clore, 1989, for further considerations). Finally, even if some emotion types truly had objectless instances, it would hardly prove that all or even the majority of emotion types are intrinsically nonintentional. In short, the issue of the intentionality of emotions raised by Stumpf is far from settled, and given its significance to the cognition-emotion problem, certainly deserves more attention than it has received. January 1992 • American Psychologist The Nature of Evaluations in Cognitive Appraisals Although contemporary cognitive emotion theorists would agree with Stumpf that cognitive appraisals, whatever they are more precisely, are intentional mental states that comprise both nonevaluative or "descriptive" components (e.g., the belief that an event is more or less likely, that it is caused by certain factors, that it is controllable), and evaluative components (e.g., the evaluation of an event as good or bad), one must agree with Lazarus and Smith (1988) that beyond these assumptions there is today a good deal of "confusion about what is meant by appraisal" (p. 282). One particularly important aspect of this confusion or disagreement that becomes salient when contemporary cognitive formulations are compared with Stumpf's theory concerns the nature of the evaluative appraisal components. Are all of these components just special types of belief (i.e., beliefs having evaluative contents), or is there at least one evaluative appraisal component essential to an emotion that is a mental state entirely different from belief, as Stumpf assumed? Explicit proponents of both views exist: See, for example, Arnold (1960a, 1960b, 1970), Green (1986), Marks (1982), or Searle (1983) for the second position and Solomon (1976, 1988) for the first one. (It should be recalled, however, that for Green, Marks, and Searle—in contrast to Stumpf—this evaluative component of emotions is a nonperformative desire.) But more frequently—particularly in the psychological literature—the issue remains unclear. Possibly, many psychologists have simply not recognized that a significant question might be at stake here. In truth, however, this issue is of central importance to the cognition-emotion problem. First, the lack of clarity about the nature of cognitive appraisals in emotion has undoubtedly fostered the recent criticisms of cognitive theories (e.g., Zajonc, 1980, 1984), for this criticism is implicitly based on the assumption that cognitive appraisals are exclusively beliefs. In fact, Zajonc (1984) apparently even assumes that cognitive appraisals comprise only nonevaluative beliefs and, as a consequence, sees his original (Zajonc, 1980) contention that evaluations do not presuppose certain kinds of belief (specifically, recognitions of objects as old vs. new) as synonymous with the claim that emotions do not presuppose appraisals (Zajonc, 1984). This is clearly a misinterpretation of cognitive emotion theories! In fact, it is precisely the affective judgments that Zajonc (1980) takes to be in part independent of cognitions—for example, "safe-dangerous, good-bad, or nice-nasty" (p. 171)—that are mentioned by cognitive emotion theorists as typical examples of (the evaluative components of) cognitive appraisals (e.g., Arnold, 1960a, 1960b; Lazarus et al., 1980; Schachter, 1964). Second, the failure to consider seriously the necessity of distinguishing clearly between evaluations (in Stumpf's sense) and (evaluative) beliefs may also have been a major reason why many cognitively oriented emotion theorists found it necessary to postulate a nonappraisal component, such as perceived physiological 41 arousal (e.g., Mandler, 1984; Schachter, 1964), a felt action tendency (e.g., Arnold, 1970; Frijda, 1986), or centrally generated feelings of a Wundtian (1896) or Cannonian (1927) variety (e.g., Oatley & Johnson-Laird, 1987; Pekrun, 1988) as at least an additional, indispensable component of emotion, resulting in "hybrid" theories of questionable validity. The reasoning of these emotion theorists has apparently been that there must be something else to emotion other than just cognitive appraisals, something that imbues "cold cognition" with "emotional warmth." This reasoning is in fact plausible if cognitive appraisals are restricted to beliefs (including evaluative beliefs) because, as Stumpf (1899, 1907b) observed, it seems indeed counterintuitive to think that emotions are just special types of beliefs (see also Frijda, 1986;Leighton, 1985). However, if it is assumed with Stumpf that, although evaluative beliefs may be important to emotions, the central evaluative component of emotions is a mental state that is fundamentally different from beliefs, then the need to postulate an additional, nonappraisal component of emotions evaporates, for then the evaluative component can provide the necessary emotional warmth. As noted earlier in this article, according to Stumpf it is in fact quite unclear how, for example, perceptions of physiological arousal could be capable of imbuing cognitions with emotional warmth. On the contrary, Stumpf thought that we must resort to evaluations to explain how emotional and nonemotional arousal differ. The Relation Between Cognitive Appraisals and Emotions The central issue in the recent cognition-emotion debate has been phrased as the question of whether or not cognitions (cognitive appraisals) are necessary for emotions. Viewed from the perspective of Stumpf's theory, it becomes immediately apparent that this question is doubly ambiguous, first, because of the lack of consensus concerning the nature of cognitive appraisals, and second, because the type of necessity under discussion could either be that of (purely) causal (or nomological) necessity, or that of definitional necessity. The recent cognition-emotion discussion has focused on the question of whether cognitions are causally necessary for emotions. That is, the central question has been whether the only causal pathway to the elicitation of emotions in the intact organism is through cognitive appraisals, or whether there are additional natural noncognitive pathways of emotion elicitation (Lazarus, 1982; Zajonc, 1980; Zajonc et al., 1989). Stumpf (1899), however, did not just claim that emotions are typically caused by cognitions (beliefs) or even that they are always caused by cognitions in the intact organism, but that cognitions belong to the defining features of emotions (i.e., emotions are functionally defined with regard to their cognitive causes). As a consequence, he held that, even if evaluations could be noncognitively caused, such evaluations would not count as proper emotions. As was mentioned earlier, a similar functional-definition view of emotions is held 42 by several contemporary cognitive emotion theorists (e.g., Arnold, 1970; Davidson, 1976; Gordon, 1974; Lyons, 1980; Searle, 1983; Wilson, 1972). Other contemporary cognitivists contend even that appraisals are component parts of (e.g., Lazarus et al., 1980; Oatley & JohnsonLaird, 1987; Schachter, 1964) or are identical with (e.g., Solomon, 1976) emotions. If these latter views are correct, cognitions are not just definitionally necessary for emotions; one cannot even meaningfully say that cognitions cause emotions at all. It is clear that if a convincing case for the definitional necessity of cognitions for emotions could be made, then a very strong case would exist for the indispensability of cognitions for emotions. Probably the most important consideration regarding this issue concerns the question of how the many (prima facie) emotional states of humans are distinguished from one another. For if different emotion types cannot be reliably distinguished from one another other than by reference to appraisals—if, for example, envy simply cannot be discriminated reliably from other emotions unless one takes into account the belief that a desired good that one lacks belongs to another person (Stumpf, 1899)—then cognitions are necessary for the definition of different emotion types. In evaluating this issue, it should be recalled that the attempt to provide a plausible solution to the discrimination of emotion problem was one of the major reasons for the turn toward cognitive theories in the 1960s (e.g., Arnold, 1960a, 1960b; Hunt, Cole, & Reis, 1958; Schachter, 1964). To these theorists, cognitive appraisals seemed to be the only features of emotion that are differentiated enough to account for the multitude of emotional states. Today, firm evidence for the existence of a multitude of nonappraisal mental states that correspond in a one-to-one fashion with the multitude of emotions is scarcely more abundant than it was 25 years ago (see also, Zajonc et al., 1989), whereas there is now good evidence for the appraisal discrimination of emotions (e.g., Frijda, 1987; Frijda et al., 1989; Reisenzein & Hofmann, 1990; Smith & Ellsworth, 1985, 1987; Weiner, 1986). Finally, it must be reemphasized that the assumption that cognitions are definitionally necessary for emotions does not necessarily imply the denial of the existence of affective phenomena—in a wide sense of this term—for which cognitions are not necessary even in the purely causal sense. As we have seen in the previous section, in contrast to Lazarus (1982; but see Lazarus & Smith, 1988, for a different opinion), Stumpf (1899) did not feel obliged by his advocacy of a cognitive theory of emotions to maintain that all affective states necessarily presuppose cognitions. He would have readily agreed with Zajonc (1980) that there are at least some simple affective reactions (e.g., sensory pleasure and displeasure feelings) that are directly caused by sensations, that is, are unmediated by cognitive appraisals (or, more precisely, beliefs). However, in contrast to Zajonc (1984), who argued that paradigmatic emotions therefore most likely do not presuppose cognitive appraisals as well (but see Zajonc et al., 1989, for a more moderate opinion), Stumpf (1899) conJanuary 1992 • American Psychologist eluded that such cognitively unmediated pleasure-displeasure feelings are not emotions proper. This move is emphatically not an immunization strategy that seeks to settle the cognition-emotion issue by definitional fiat (Zajonc, 1984). Rather, it is an application of the scientific strategy to let a theory (in this case, a theory of the structure of emotions) that seems to work well with paradigmatic cases, autodetermine its own range of application in problematic cases (Stegmiiller, 1986). This strategy is both legitimate and reasonable. For what kind of mental state an emotion is, is ultimately determined by a theory that successfully accounts for paradigmatic emotional states. If it turns out that other prima facie affective phenomena do not conform to this theory, then this is the best possible reason one can have for believing that these latter phenomena and the paradigm cases constitute different natural kinds. Conclusion Rather than being of recent origin, the cognition-emotion problem has been with psychology since its very beginnings as an institutionalized science, and the central issues seem to have remained much the same. Had Stumpf had the opportunity to comment on the recent debate, he would have agreed with the criticisms of contemporary cognitive emotion theories to the extent that these theories constitute attempts to either reduce emotions to beliefs (e.g., Solomon, 1976) or to subsume all affective phenomena under emotions (e.g., Lazarus, 1982). But he would certainly have opposed the return to noncognitive, "feeling" theories of emotion (e.g., Buck, 1985; Izard, 1984; Zajonc, 1984; Zajonc et al., 1989), as well as to "hybrid" cognition-feeling theories such as those proposed by Lyons (1980), Mandler (1984), Oatley and Johnson-Laird (1987), or Schachter (1964). To some degree, this return to feeling theories may simply have happened because more plausible noncognitive theories of emotions were not in sight. But it may also have been fostered by the fact that there seems to be, at least since James and Wundt, but probably since the introduction of the threefold division of mental states into cognitive, affective, and motivational ones around 1750 (see, e.g., Brentano, 1874/1971; Hilgard, 1980; Scheerer, 1992), a deeply entrenched a priori belief among many psychologists that emotions are intrinsically nonrepresentational states similar to sensations. These psychologists may wish to seriously reconsider Stumpf's suggestions that (a) the mind does not just consist of intellectual representations (beliefs) and action tendencies, on the one hand, and raw feels, on the other hand, but that there are further types of intentional states such as desires and wishes of various kinds, as well as approvals and disapprovals (see also Baier, 1986; Kuhl, 1983), and (b) that not all affective phenomena may turn out to be emotions on closer examination. Although read and quoted by his contemporaries, Stumpf's writings on emotion did not exert much influence on the psychological literature later in this century. A probable major reason was that neither Stumpf nor his students actively propagated his ideas and developed them January 1992 • American Psychologist further. As for Stumpf himself, emotion was not his central area of interest and he did not regard his pertinent work as particularly novel or surprising. 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