Wilhelm Maximilian Wundt

Biography of life and activity is Wilhelm Maximilian Wundt the german doctor, physiologist of ai psychologist, known as a founder of experimental psychologists. The theoretical framework of experimental psychology. Wundt's "individual psychology".

15.05.2012
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Wilhelm Maximilian Wundt

Wilhelm Maximilian Wundt (1832-1920) is known to posterity as the father of experimental psychology and the founder of the first psychology laboratory .From there, Wundt exerted enormous influence on the development of psychology as a discipline, especially in the United States. Somewhat reserved and shy in public,Wundt aggressively dominated his chosen arenas, the lecture hall and the pages of books, with a witty and sardonic persona. His scope was vast, his output incredible. His writings, totaling an estimated 53,000 pages, include: articles on animal and human physiology, poisons, vision, spiritualism, hypnotism, history, and politics; text- and handbooks of medical physics and human physiology; encyclopedic tomes on linguistics, logic, ethics, religion, a system of philosophy; not to mention his magna opera, the Grundzge der physiologischen Psychologie and the Vlkerpsychologie (in ten volumes). Although his work spans several disciplines--physiology, psychology, and philosophy--Wundt would not have considered himself an interdisciplinary or pluralistic thinker: he was to the core a foundationalist, whose great ambition was establishing a philosophico-scientific system of knowledge, practice, and politics.Despite his intentions, however, the sheer length of his career (some 65 years) and the volume of his output make it hard to speak of a coherent Wundtian doctrine. His corpus is riven by tensions and ambiguities, and though his work has undergone periodic scholarly reconsiderations, Wundt's lasting importance for the field of psychology remains the topic of lively debate among psychologists.

For philosophers, Wundt is worth studying for two reasons. First, the arguments he made more than a century ago for the legitimacy of a non-reductionist account of consciousness offer both challenges and resources to contemporary psychology and philosophy of mind alike. Should those arguments be found lacking, there remains a second, perhaps more important reason to read him: not understanding Wundt is to tolerate a lacuna at a crucial nexus of the recent history of philosophy. Not only was he a powerful influence (albeit mostly by repulsion) upon the founders of Pragmatism, Phenomenology, and neo-Kantianism, it was also Wundt and his pioneering students who developed the empirical methodologies that first granted psychology a disciplinary identity distinct from philosophy. It is these philosophically germane aspects of his thought that this article describes.

Life & Times

wundt experimental psychologists

Wilhelm Maximilian Wundt was born on August 16th, 1832, in the town of Neckarau, outside of Mannheim, the son of a Lutheran minister. The family moved when Wilhelm was six to the town of Heidensheim, in central Baden. By all accounts, he was a precocious, peculiar boy, schooled mainly by his father's assistant, the vicar, Friedrich Mller; young Wilhelm was so attached to Mller that he moved in with him when the latter got a post in the neighboring village Wundt studied at the Gymnasien at Bruchsal and Heidelberg and entered the University of Tbingen at 19, in 1851.After one year he transferred to the University of Heidelberg, where he majored in medicine. By his third year, his intense work ethic yielded his first publication .Nevertheless, doctoring was not Wundt's vocation and he turned instead to physiology, which he studied for a semester under Johannes Mller (the father of experimental physiology) at Berlin .In 1856, at the age of 24, Wundt took his doctorate in medicine at Heidelberg, and habilitated as a Dozent in physiology. Two years later, the physicist, physiologist, and psychologist, Hermann von Helmholtz received the call to Heidelberg as a professor of physiology, a decisive moment for Wundt's career; the two worked in the same laboratory until 1871.

When Helmholtz moved to Berlin in 1871, Wundt was passed over as Helmholtz's replacement; three years later he took the chair in inductive philosophy at the University of Zrich. He remained at Zrich for only one year before receiving an appointment to a first-class chair of philosophy at Leipzig in 1875. Leipzig's philosophy department, dominated by Herbartians, provided the ideal environment for his intellectual flowering, the soil having been prepared by Fechner, Weber, and Lotze .Wundt became famous at Leipzig. It was here, in 1879, that the university formally recognized his little room of equipment as a bona fide laboratory, the world's first devoted to psychology. Students flocked to Wundt, and while he set the tone and direction of research, it was largely they who constructed apparatus, performed experiments, and published results. Enrollment in his courses doubled about every 15 years, reaching a peak of 620 students in the summer of 1912. Wundt ended up sponsoring 186 Ph.D. dissertations, about a third of which apparently involved purely philosophical topics.

Though Wundt participated actively in labor politics in his early years at Heidelberg, even being elected to the Baden parliament, he steadily drifted rightwards, eventually being persuaded by his virulently anti-Semitic son, Max, a historian of philosophy, to join the ultranationalist Deutsche Philosophische Gesellschaft, after 1917. It is hard to ignore Wundt's unattractive application of his late social and cultural psychology to the tendentious critique of Germany's enemies. Nevertheless, his drive and unflagging intellectual advocacy will arouse admiration in some: even at age 80, he remained involved in academic controversy. But let us consider the man through his work.

To understand Wundt's philosophical importance one must know something of his intellectual context. Early nineteenth-century German psychology labored under the looming shadow of Kant and his arguments that a science of psychology is in principle impossible. This fact by itself illustrates the oddity of the situation, from our point of view: why would a psychologist care what a philosopher thought about his practice? The answer is that since ancient times, psychology had been a basic part of philosophical speculation, though after Kant's criticisms many considered it a dying branch, dangerously close to breaking off. Psychologists were philosophers on the defensive.

Psychology, as a part of philosophy, had already several times changed the way it defined its object: as soul, mental substance, mind, etc. By the late eighteenth and early nineteenth centuries, many regarded psychology to be the account of consciousness or inner experience, distinct from the natural scientific accounts of external, sensible reality. After having dealt the coup de grce to the speculative, rational, a priori psychology of the soul epitomized by Christian Wolff, however, Kant tried to cut off any retreat into the empirical study of consciousness, as well. In the Metaphysical Foundations of Natural Science, he argued that empirical psychology cannot be an exact science because the phenomena it seeks to explain are not mathematically. Moreover, it can never become an experimental science because it is not possible to isolate different thoughts Finally, and most fatally, the only access to the phenomena of inner experience, introspection, ipso facto alters those phenomena: if I try, by introspection, to study what it's like to be tristful, the phenomena of my sadness are now something different, namely, phenomena of my sadness-being-studied-by-me Thus psychologists found their object declared beyond the limit of possible investigation, and their methods correspondingly vain. While such arguments did not persuade all of Kant's successors of the hopelessness of their enterprise, the results of their were unpromising. On the one hand, the German Idealists' fanciful speculation about Geist collapsed upon itself. On the other hand, the efforts of J.F. Herbart to devise a mathematical mental mechanics suggested a possible way forward although in the end it proved equally fruitless. Thus, for those mid-nineteenth-century enthusiasts of mental phenomena, the future of a genuine psychology seemed blocked.

At the same time, however, progress was being made in human physiology, especially of the sensory systems. In 1834, the physiologist, E.H. Weber, published a startling discovery in his De tactu. His experiments on the sensation of weight had led him to find that there obtains a constant ratio between, on the one hand, a given stimulus and, on the other hand, a second stimulus sufficiently larger for the difference between the two stimuli to be just noticeable, no matter the magnitude of the first stimulus. In other words, if the first stimulus is of intensity I, then I is the amount by which it must be increased for the difference to be just noticeable; the ratio of I and I is constant (k): I / I = k. This equation, which later came to be known as Weber's Law, was crucial to the development of psychology because it apparently demonstrated that where Herbart had failed in his aprioristic construction of mathematical regularities of mind, experimentation could succeed. The situation nevertheless remained murky as interpretations of Weber's Law multiplied. Fechner, for example, elaborated Weber's experiments but took his results as the basis for an arcane panpsychic monism (Wundt's own psychological interpretation is treated in Section 4).

In founding the experimental science of psychology, Wundt, in effect, simply triangulated a media via between the available options: he rejected Fechner's mysticism while maintaining his experimental approach; at the same time, Wundt went beyond the purely physical interpretation of physiological experiments la Helmholtz, arguing that at least in humans experimentation could reveal law-like regularities of inner (psychological) reality. Thus, to use the phrase of Ben-David and Collins, he established the hybrid science whose dual provenance is expressed in Wundt's name for it, physiological psychology . Wundt's interest, both to scholars of the history of philosophy and to contemporary philosophers of mind, flows ultimately from the definition, methodology, and metaphysics of this physiological psychology. Sections 3 and 4 are devoted to a description of its definition, method, and doctrine, while Section 5 concerns its theoretical underpinnings. The practical and theoretical limits of experimental psychology will be treated in Section 6, on Vlkerpsychologie.

Experimental psychology: object and method

Object

The exact description of consciousness [Bewusstsein] is the sole aim of experimental psychology. Wundt identifies physiological with experimental psychology.Thus, for Wundt, experimental psychology is the unmediated study of consciousness, aided by the experimental protocols of the natural sciences. Yet this definition involves two contestable assumptions: first, that consciousness is susceptible to experiment (rejected by Kant); second, that psychology, even if conceived as experimental, has for its object consciousness or the mental (later rejected by the Behaviorists). Let us focus on the first assumption, since it is one Wundt addresses.

Wundt defines consciousness as inner experience; it is only the immediately real phenomena constituting this experience, and nothing behind or beyond it, that is the object of psychological, as opposed to physiological or psychophysical investigation .Wundt's project is not only a psychology without a soul, in F.A. Lange's phrase, but also a science without a substrate tout court. Wundt therefore presents himself as a radical empiricist. The subject of psychology is itself determined wholly and exclusively by its predicates, and these predicates derive solely from direct, internal observation (on which below). The basic domain of inquiry, accordingly, is that of individual psychology, i.e. of the concrete mental contents appearing to particular human beings, and not some mental substance or bundle of faculties. In Wundt's declaration that individual psychology must become a science via the experimental manipulation of inner phenomena, we see a pragmatic attitude perhaps peculiar to the working scientist: the future science as doctrine takes shape in and through the present practice of experimentation, its essays, assays, trials, and errors. Instead of simply submitting to Kant's injunctions against the very possibility of a scientific psychology, Wundt finds that certain aspects of our inner experience can be, and in fact have been made susceptible to experiment and mathematical representation: Weber and Fechner did this.

Method

Nevertheless, Wundt repeatedly addresses the objections raised against the very possibility of psychological, as opposed to physiological or psychophysical, experimentation. How are we to subject the mind-body complex to physiological stimulation such that the reactions may be given a purely psychological interpretation? From the physiological point of view, experimentation with stimulus and response are not experiments of sensation, but of externally observable excitations and reactions of nerve and muscle tissue. For example, a nerve fiber or a skin surface may be given an electric shock or brought into contact with acid, and twitches of muscle fiber are observed to follow. It is obvious, especially when the nerve-tissue in question belongs to a dead frog, that these experiments say nothing about the inner experience or consciousness of sensation. Wundt's innovation is the attempt to project the experimental rigor of physiology into the domain of inner experience by supplementing these experiments with a purely psychological set of procedures. These procedures constitute Wundt's well-known yet misunderstood method of Selbstbeobachtung, i.e. introspection or, better, self-observation.

Because inner distinguishes itself from external experience by virtue of its immediacy, all psychology must begin with self-observation, so that physiological experiment is given an ancillary function . Now Wundt is well aware of the common criticism that self-observation seems inescapably to involve the paradoxical identity (described in the previous section) of the observing subject and observed object. Indeed, he takes pains to distinguish his notion of self-observation from that of most advocates of the so-called empirical psychology, which he calls a fount of self-delusions [Selbsttuschungen]:

Since in this case the observing subject coincides with the observed object, it is obvious that the direction of attention upon these phenomena alters them. Now since our consciousness has less room for many simultaneous activities the more intense these activities are, the alteration in question as a rule consists in this: the phenomena that one wishes to observe are altogether suppressed [i.e., by the activity of focused attention upon them].

Wundt believes that one can experimentally correct for this problem by using, as much as possible, unexpected processes, processes not intentionally adduced, but rather such as involuntarily present themselves [sich darbieten] .In other words, it is in the controlled conditions of a laboratory that one can, by means of experimenter, experimental subject, and various apparatus, arbitrarily and repeatedly call forth precisely predetermined phenomena of consciousness. The psychologist is not then interested in the psychophysical connections between the somatic or nervous sense-mechanisms and the elicited inner phenomena, but solely in describing, and where possible measuring, the psychological regularities that such experiments can reveal, viz., regular causal links within the domain of the psychic alone . According to Wundt, psychological experiments thus conceived accomplish in the realm of consciousness precisely what natural-scientific experiments do in nature: they do not leave consciousness to itself, but force it to answer the experimenter's questions, by placing it under regulated conditions. Only in this way is a [psychological] observation [as opposed to a mere perception {Wahrnehmung}] at all possible in the scientific sense, i.e., the attentive, regulated pursuit of the phenomena. A detailed account of these experiments themselves, however, lies far beyond the scope of this article.

Wundt's individual psychology

Sensation

Wundt, like most early experimental psychologists, concentrated his investigations upon sensation and perception; of all psychic phenomena, sensation is the most obviously connected to the body and the physical world. For Wundt, sensations and our somatic sensory apparatus are especially important for the project of physiological psychology for the simple reason that sensations are the contact points between the physical and the psychological (PP I: 1). Sensations (Empfindungen), as the medium between the physical and psychic, are uniquely susceptible to a double-sided inquiry, viz. from the external physical side of stimulus, and the internal psychological side of corresponding mental representation (Vorstellung). The Wundtian psychologist therefore controls the external, physiological side experimentally, in order to generate diverse internal representations that only can appear to the introspective observer. According to Wundt, the representations (Vorstellungen) that constitute the contents (Inhalt) of consciousness all have their elemental basis in sensations (Empfindungen) . Sensations are never given to us as elemental, however; we never apperceive them purely, but always already connected (verbunden) in the representation of a synthesized perception . Yet, the manifestly composite nature of our representations forces us to abstract such elementary components. Pure sensations, according to Wundt, display three differentiae: quality, intensity, and feeling-tone (Gefhlston) .

His treatment of quality and intensity are especially important for getting a clearer notion of his notion of psychological experimentation. It is a fact of inner experience that every sensation possesses a certain intensity with respect to which it may be compared to other sensations, especially those of similar quality . The outer sensory stimuli may be measured by physical methods, whereas psychology is given the corresponding task of determining to what degree our immediate estimation [Schtzung] [of the strength of sensory stimuli] that we make aided by our sensations--to what degree this estimation corresponds to or deviates from the stimuli's real strength . There are two possible tasks for psychophysical measurement of sense-stimuli: the determination of limit-values between which stimulus-changes are accompanied by changes in sensation; and the investigation of the lawful relations between stimulus-change and change in sensation. Sensation can thus be measured with respect to changes in intensity corresponding to changes in strength of stimuli .

Weber's Law (WL) is the most striking example of such a relation, and Wundt's interpretation of WL sheds much light on what he means by physiological psychology. Wundt writes:

We can formulate [this law] as follows: A difference between any two stimuli is estimated [geschtzt] to be equal if the relationship between the stimuli is equal. Or: If in our apprehension [Auffassung] the intensity of the sensation is to increase by equal amounts, then the relative stimulus-increase must remain constant. This latter statement may also be expressed as follows: The strength of a stimulus must increase geometrically if the strength of the apperceived sensation is to increase arithmetically.

Now these various formulations of WL admit, as Wundt says, of three different, and indeed incompatible interpretations; that is, there are three different conceptions of what WL is a law of. First, the physiological interpretation takes it as a manifestation of the peculiar laws of excitation of the neural matter; second, the psychophysical (Fechnerian) interpretation takes WL as governing the interrelation between somatic and psychic activity . Wundt rejects both of these in favor of a third, the psychological interpretation; his arguments are instructive. Against the physiological interpretation Wundt raises the following main point, viz. that the estimation of the intensity of sensation (Empfindungsintensitt) is a complicated process, upon which--in addition to the central sensory excitation--the effectiveness of the center of apperception will exert considerable influence. We can obviously say nothing immediate about how the central sense-excitations would be sensed independently of the latter; thus Weber's Law, too, concerns only apperceived sensations, and therefore can just as well have its basis in the processes of the apperceptive comparison of sensation as in the original constitution of the central sensory excitations.

Now apperception (see below) is a purely psychological act in consciousness--and it is solely as a law of the psychological processes involved in the measuring comparison of sensations that Wundt understands WL . In other words, WL does not apply to sensations in and for themselves, but to processes of apperception, without which a quantitative estimation of sensations could never take place. Wundt sees WL as simply a mathematical description of the more general experience that we possess in our consciousness no absolute, but merely a relative measure of the intensity of the conditions [Zustnde] obtaining in it, and that we therefore measure in each case one condition against another, with which we are obliged in the first place to compare it .For this reason Wundt's psychological interpretation makes WL into a special case of a more general law of consciousness, viz. of the relation or relativity of our inner conditions [Zustnde] WL is therefore not a law of sensation so much as of apperception.

This solution typifies Wundt's general view that the domains of psychic and physical phenomena do not stand in conflict, but rather constitute separate spheres of (causal) explanation. His interpretation of WL nicely illustrates how, on his view, physiological experiments can yield mathematically expressible results, not about the physical, somatic processes involved in sensation, but about the relationships among these sensations as apperceived, i.e., as psychological elements and objects of consciousness. He writes that the psychological interpretation offers the advantage of not excluding a simultaneous [i.e. parallel] physiological explanation (presumably once the neurophysiological facts of the matter have been better elucidated); by contrast, the two competing interpretations only permit a one-sided explanation of WL .

The theoretical framework of experimental psychology

As we have seen for Wundt the possibility of a physiological psychology (as opposed to a purely physiological inquiry into sensation, behavior, learning, etc.) depends on the possibility of self-observation. Self-observation, in turn, is of scientific use if and only if the sequence of inner phenomena of consciousness is assumed to fall under an independent principle of psychic causality. For if it does not, then these phenomena could never be more than a chaotic subjective muddle, of which there could be no science. Alternatively, if the inner phenomena could be shown to fall under the physical causality of the natural sciences, then there would be no need for a special psychological method, such as self-observation. In fact, however, a system of psychic causality can be determined, Wundt argues, one that at no point is reducible to physical causality: no connection of physical processes can ever teach us anything about the manner of connection between psychological elements. This fact, which Wundt thinks is given in the psycho-physiological experiments described above, leads him to his so-called principle of psychophysical parallelism.

The PPP has caused a great deal of confusion in the secondary literature, which persists in characterizing it as a metaphysical doctrine somehow derived from Leibniz or Spinoza. Wundt however is crystal-clear that the PPP is not a metaphysical hypothesis. It is merely an admittedly misleading name for an empirical postulate necessary to explain the phenomenal fact of consciousness of which we are immediately aware . By denying any metaphysical interpretation of his principle, Wundt insists that the physical and the psychic do not name two ontologically distinct realms whose events unfold on separate yet parallel causal tracks. He is therefore not an epiphenomenalist, as some commentators have said. Rather, the physical and psychic name two mutually irreducible perspectives from which one and the same world or Being (Sein) may be observed: nothing occurs in our consciousness that does not find its sensible foundation in certain physical processes, he writes, and all psychological acts (association, apperception, willing) are accompanied by physiological nerve-actions. In distinguishing the empirical from the metaphysical PPP, Wundt contrasts his own view against Spinoza's, which, according to Wundt, makes the realm of material substance exist separately, though in parallel, with that of mental substance.

The investigator of psychological phenomena, therefore, must assume, solely for heuristic reasons, two parallel and irreducible causal chains by which two distinct types of phenomena may be accounted for . Wundt compares the distinction between psychological and physiological explanation to the different viewpoints taken by chemistry and physics of the same object, a crystal. The chemical and physical accounts are not of two different entities; rather, they describe and explain the same entity from two distinct points of view, and in this sense the two accounts are parallel. Similarly, (neuro-) physiology and psychology do not describe different processes, one neural and one mental, but the same process seen from the outside and the inside, respectively. As Wundt writes, `Inner' and `outer' experience merely designate distinct perspectives that we can apply in our grasp and scientific investigation of what is, in itself, a unitary experience .

The order of knowledge

Psychology in its relation to the sciences

As we have seen, Wundt was concerned not only with expanding the set of known psychological facts, but also with interpreting them from within an appropriate explanatory framework. Of course, the necessity of establishing such a closed framework distinct from physiology amounted to distinguishing psychological causality from physical causality in general, and hence psychology from the natural sciences altogether. But psychology has to be defined against two other areas of scientific (wissenschaftlich) inquiry; first, in its vlkerpsychologisch dimension, against the Geisteswissenschaften or human sciences, and second, against the non-psychological domains of philosophy. As these relationships are laid out below, it must always be remembered that although these four areas--psychology, philosophy, natural science, human science--are irreducible, this irreducibility is not a metaphysical or ontological one, but merely one of explanatory function (and commensurate methodology). They do not have distinct objects, but again merely represent ways of describing irreducible perspectives upon the same object, namely experience. Wundt writes:

Objects of science do not in and of themselves yield starting points for a classification of the sciences. Rather, it is only regarding the concepts that these objects call for that we can undertake this classification. Therefore, the same object [Gegenstand] can become the object [Objekt] of several sciences: geometry, epistemology, and psychology each deals with space, but space is approached in each discipline from a different angle. The tasks of the sciences are therefore never determined by the objects in themselves, but are predominantly dependent upon the logical points of view from which they are considered.

Wundt's monism has serious consequences for the sort of claim philosophy (and thus psychology) can make to be scientific. The most obvious is that neither can lay claim to synthetic knowledge that is not founded or (also) describable in terms of the natural or human sciences.

For Wundt, it is only the sciences that have methodologies by which to synthesize our representations, sensible as well as processed, into facts or pieces of knowledge (Erkenntnisse). Hence, while strictly speaking he is committed to considering psychology (i.e., physiological psychology and VP) as a part of philosophy, he usually speaks of them as distinct enterprises. This is because psychology is hybrid, adapting scientific methodologies to its particular aims; in this sense psychology, although part of philosophy, synthesizes facts, just like the sciences. By contrast, philosophy's pure task is universal, operating over all scientific domains; it is, he writes, the general science whose task it is to unify the general pieces of knowledge yielded by the particular sciences [Einzelwissenschaften] into a system free of contradiction Philosophy's positive role, therefore, is not to ground or provide the foundations of science, nor can it ever step into the role of a particular science; rather it is to take in every case the already secured results of those sciences as its foundation, and organize them into a single, overarching system by determining their points of connection. Wundt calls this side of philosophy Prinzipienlehre or doctrine of principles. By contrast, its negative or critical role is to regulate the sciences in accord with the imperative of consistent systematicity. In short, it has no constitutive but merely a regulative role vis--vis the sciences. Thus, when we return to the philosophical as opposed to the scientific aspect of psychology's hybrid structure, we see that this aspect consists in its aim (as opposed to its method) of explaining rules of genesis, connection and separation of those mental representations with an epistemic character. Wundt calls this psychological contribution to philosophy Erkenntnislehre or doctrine of knowledge. This explanation then provides to philosophy the scientific (or factical) foundation for its pure task.

Wundt divides up the sciences into two large families, the formal sciences and the real sciences. The former include mathematics; the latter study the natural and spiritual aspects of reality, and correspondingly are divided into the natural and the human sciences. The human sciences in turn are divided into two genera, one of which deals with spiritual processes (geistige Vorgnge), the other with spiritual products (geistige Erzeugnisse). The former just is the science of psychology; the latter includes the general study of these products as such (e.g., philology, political science, law, religion, etc.), as well as the parallel historical study of these products as they have in fact been created. Since the process precedes the product, psychology as the doctrine of spiritual [geistig] processes as such is the foundation of all the other human sciences. Philosophy, in turn, takes psychology's results and again abstracts from them the normative rules governing the organization of the human and natural sciences, something the latter cannot do themselves. In this way psychology as a science mediates between the sciences and philosophy.

Psychology and logic

One aspect of Wundt's hierarchy of method and knowledge deserves special attention, namely the place of logic in the sciences. Like almost all the similarly titled tomes produced by the German mandarins, Wundt's Logik (in two, later three 600-page volumes in four editions) molders away in research libraries. Its contents are for the most part unrecognizable as logic in any contemporary sense. What most philosophers meant by Logik in Wundt's day was the rules and procedure of inference governing the sciences, where this often included lengthy treatments of the actual scientific application of these rules. What we would expect to find in a book called Logik today, viz., symbolic or mathematical logic, was called in Wundt's day Logistik, and considered by some a mathematical (that is, merely formal) game unworthy of philosophy's scientific (that is, substantive) role. Thus we should not be surprised to read Wundt, too, declare logic's task to be the justifying and accounting for those laws of thinking active in scientific knowledge .

For Wundt, however, this task involves psychology, and indeed much of his Logik is devoted to this topic. As he reasonably points out, logic comprises the rules of correct thinking, and the principles of logic are known to us as conscious representations; thinking and consciousness are objects of psychological inquiry; therefore any account of logic must include a psychological description of the genesis of logical principles .Even the normative character of logic had, in his view, to be given a psychological interpretation. Inevitably Wundt was accused of logical psychologism--the all-purpose term of abuse flung about in fin-de-sicle German philosophical debate. Husserl, for example, condemned him for expounding an extreme form of psychologism, viz. species-relativism, the notion that truth varies with different species of animal . Yet Wundt himself calls his Logik the most rigorous rejection of the psychologism that reigned at the time and held that logical thinking is universally binding for every thinker .How can we reconcile these statements?

Wundt's view of logic is unusual, but fully in line with his rigorously anti-metaphysical monistic perspectivism. That is, there is no logical third realm, but merely a single process called thinking [Denken]; it is an immediately given fact of thinking that there are logical laws that stand over against all our other thoughts and representations as norms .Their psychological immediacy does not, Wundt thinks, compromise their normativity, since what is given in consciousness precisely is their normative character. Once this character is taken for granted, the science of logic develops its systems of correct deductions [Schliessen] without further worry about the source of that normativity. It simply remains to develop the foundations and methods of scientific knowledge .

According to Wundt, the three features of logical thinking that set it apart from all other types of representational connection are its spontaneity, evidence, and universal validity [Spontaneitt, Evidenz, Allgemeingltigkeit] .Let us briefly describe these. Wundt's notion of the spontaneity of logical thinking is perhaps the most psychologistic-sounding of the three. Because, as was described above, thinking is experienced immediately as an inner activity, we must regard it as an act of will [Willenshandlung], and accordingly regard the logical laws of thought [Denkgesetze] as laws of the will .In other words, logical thinking is accompanied essentially by a feeling of the thinking subject's freedom in thinking. But while logical thinking may be accompanied by an especially strong self-awareness of the mind's own activity, this feeling is not unique to logical thinking, since active apperception more generally is also accompanied by the sense of subjective activity. By contrast, logical evidence and universal validity are characteristics possessed by logical thinking to a higher degree than by any other psychic function .By evidence, Wundt means the character of compelling necessity accompanying a logical judgment, what we might call self-evidence . A thought [Gedanke] may exhibit immediate certainty, obvious without any mediating thought-acts; or a thought may be mediately certain, grounded in prior thought-acts. Immediate and mediate evidence have their source and foundation in intuition (Anschauung): immediate evidence immediately, mediate evidence mediately .Intuition is not identical with evidence, for evidence only comes to be at the moment when logical thinking relates the contents of intuition and presupposes the relations of such intuitive contents as objectively given .Wundt thus charts a middle course between, on the one hand, making logical evidence a transcendent or transcendental function of thinking (as Kant and recent speculative philosophy is alleged to do), and, on the other hand, considering it an empirical trait of sensible objects (as do empiricists and positivists) .

By the standards of such philosophers as Husserl, Natorp, and Frege, Wundt appears committed to a logical psychologism. But it is worth considering his response to this charge, for it again illustrates his monistic perspectivism. While he rejects any interpretation of the origin of logical principles that would impugn their normative character of necessity, he also rejects the opposite extreme, what he calls Logizismus--the complete divorce of logical thinking from thinking as it actually occurs in minds. For Wundt, the logicist makes a metaphysical leap as suspect as it is unnecessary in conjuring up a pure, absolute, transcendental, but in any case separate source of logical normativity. Instead of solving the puzzle of logical normativity, he exacerbates it by adding the puzzles of the ontological status of a third realm, or of a transcendental ego, or of pure thinking, and the influence of all of these on your thinking as you read this. Wundt finds a simpler solution in his perspectivism. The logical may be considered purely from a logical point of view, i.e., in terms of its normative character, or genetically from a psychological point of view. But there are no logical laws that are not also describable psychologically, just as there is no psychological phenomenon not also describable physiologically. But being describable in this sense is not the same as being explicable, and it is this separate task of explanation that falls to logic and psychology, respectively. The logical description saves the phenomenon of normativity, just as the psychological description saves the phenomenon of the interiority of consciousness.

Conclusion

Wundt's conception of psychology was always controversial. At least in Germany, the struggle over the status and philosophical meaning of consciousness resulted, on the one hand, in the exclusion of Wundtian empiricism from philosophy departments, striving to maintain their speculative purity, and, on the other, the institutional establishment of experimental psychology as an independent discipline. This was not the outcome Wundt had desired. He had wished to reform philosophy, not as a synthetic science, but with a direct, indispensable, juridical relation vis--vis both the natural and human sciences. He never saw his psychological scientism as a threat to philosophy--on the contrary, he considered his psychology to be a part of philosophy, one necessary for philosophy to take its proper place in the totality of the sciences. Indeed, philosophy could only assume that position through the mediating position of psychology . Yet academic philosophers, denied the possibility of any legislative or executive functions in the sciences, rejected the juridical ones as well, bitterly resisting contamination of their pure pursuit by the empiricism of the new psychology. In Germany, resistance was especially stiff among neo-Kantians, and later the Phenomenologists. In the end, the quarreling parties ineluctably assumed positions similar to their opponents'--though of course in a purified way.

Let us return to James's mean remark about Wundt: he has no noeud vital, no central idea, and so this would-be Napoleon planarian can never be killed all at once. Setting aside Wundt's need to be killed at once or in bits, a fair and attentive reader will respectfully reject such scintillating criticisms. For although Wundt has many ideas--the theory of actuality, the principle of psychophysical parallelism, voluntarism, creative resultants, etc., etc.--yet they all do have a single unifying node, namely what I have here called monistic perspectivism. If Wundt has a big idea, it is that Being is a single flow of Becoming with many sides and many ways of being described. Consequently we, as part of this Being, have many ways of describing and explaining it. Few have as unblinkingly accepted the consequences of their starting points, or more doggedly pursued them to their various ends than Wundt.

References:

Mind, Brain, and the Experimental Psychology of Consciousness, article at Serendip at Bryn Mawr College.

Wolman, B.B. 1968. Historical roots of contemporary psychology. New York: Harper & Row.

Boring, E.G. 1942, 1950. A History of Experimental Psychology. 2nd ed. New York: Appleton-Century-Crofts.

Humphrey, G. 1968. Wilhelm Wundt: The Great Master. In Wolman, 1968: 275-297.

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