This book is about Karl Popper's early writings before he began his career as a philosopher. The purpose of the book is to demonstrate that Popper's philosophy of science, with its emphasis on the method of trial and error, is largely based on the psychology of Otto Selz, whose theory of problem solving and scientific discovery laid the foundation for much of contemporary cognitive psychology. By arguing that Popper's famous defence of the method of falsification as well as his elaboration (...) of an evolutionary theory of knowledge are equally indebted to German psychology, Michel ter Hark challenges the received view of the development of Popper's philosophy. The book concludes with a reinterpretation of Popper's theory of the mind-body problem, emphasizing its contemporary relevance. (shrink)

On the basis of his unpublished thesis ‘Gewohnheit und Gesetzerlebnis in der Erziehung’ a historical reconstruction is given of the genesis of Popper's ideas on induction and demarcation which differs radically from his own account in Unended quest. It is shown not only that he wholeheartedly endorses inductive epistemology and psychology but also that his ‘demarcation’ criterion is inductivistic. Moreover it is shown that his later demarcation thesis arises not from his worries about, on the one hand, Marxism and psychoanalysis (...) and, on the other hand, Einstein's physics, but rather from his urgent preoccupation with providing pedagogy with a psychological foundation, which has its sources in Karl Bühler's cognitive psychology as well as, surprisingly, Adler's Characterology. Aside from Adler some lesser known psychologists, such as Karl Groos, will also be seen to have played a formative role on Popper's early thinking. (shrink)

“Tell me," Wittgenstein once asked a friend, "why do people always say, it was natural for man to assume that the sun went round the earth rather than that the earth was rotating?" His friend replied, "Well, obviously because it just looks as though the Sun is going round the Earth." Wittgenstein replied, "Well, what would it have looked like if it had looked as though the Earth was rotating?” What would it have looked like if we looked at all (...) sciences from the viewpoint of Wittgenstein’s philosophy? Wittgenstein is undoubtedly one of the most influential philosophers of the twentieth century. His complex body of work has been analysed by numerous scholars, from mathematicians and physicists, to philosophers, linguists, and beyond. This volume brings together some of his central perspectives as applied to the modern sciences and studies the influence they may have on the thought processes underlying science and on the world view it engenders. The contributions stem from leading scholars in philosophy, mathematics, physics, economics, psychology and human sciences; all of them have written in an accessible style that demands little specialist knowledge, whilst clearly portraying and discussing the deep issues at hand. (shrink)

The aim of this article is to show that one of Popper's key ideas in epistemology, his so-called theory of the searchlight, is derived from early German Denkpsychologie, in particular the theory of schematic anticipations of Otto Selz. With his theory of schematic anticipations Selz intended to replace various forms of association psychology. Likewise Popper's theory of the searchlight aims to replace empiricism in epistemology (the Bucket theory, as he calls it). On the basis of Popper's still unpublished manuscripts on (...) psychology between 1927 and 1931, it is shown that his position became increasingly Selzian. The term "Bucket theory" is used by him for the first time in an article in which he defends Selz, and in his earlier Ph.D. thesis there occur passages which show him in complete agreement with the theory of schematic anticipations. It is argued that Popper's Selzian stance in psychology finally enabled him to develop his characteristic deductive stance in epistemology and philosophy of science. It is also emphasized that Popper never credits Selz for this formative role. (shrink)

This essay sketches the potential implications of Wittgensteinian thought for conceptualizations of socalled fictive mental states, e.g. mental calculating, imagination, pretend play, as they are currently discussed in developmental psychology and philosophy of mind. In developmental psychology the young child's pretend play and make-belief are seen as a manifestation of the command of an underlying individualistic “theory of mind”. When saying “This banana is a telephone” the child's mind entertains simultaneously two mental representations, a primary or veridical representation about the (...) real properties of banana's and a pretend representation. It is the task of psychology to explain how this “double knowledge” does not result in conceptual chaos. Various sorts of internal mechanisms are postulated. In this essay it is argued that the threat of chaos is misconceived, and that the solutions are irrelevant. Following Wittgenstein's sparse remarks about the secondary sense of words, I argue that pretend language does not refer to underlying individual mental representations but to the child's creative transference of words used in one, primary, domain of application to another, secondary domain. The command and use of the secondary domain logically presupposes the command and use of the primary domain. Since the latter domain is necessarily public and social, fictive mental states cannot be dealt with purely individualistically as current mentalism assumes. (shrink)

The aim of this article is to give both a sustained interpretation of Wittgenstein’s obscure remarks on the experience of meaning of language, synthaesthesia and secondary use and to apply his insights to recent philosophical discussions about synthaesthesia. I argue that synthaesthesia and experience of meaning are conceptually related to aspect-seeing. The concept of aspect-seeing is not reducible to either seeing or imaging but involves a modified notion of experience. Likewise, synthaesthesia involves a modified notion of experience. In particular, the (...) concept of synthaesthesia involves a secondary use of ‘experience’ and hence is intrinsically dependent on the primary use of language. Recent discussions tend to overlook this distinction between the primary and secondary use of language. (shrink)

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How does the philosophical problem about mental processes and states and behaviourism arise?—The first step is the one that altogether escapes notice. We talk of processes and states and leave their nature undecided. Sometimes perhaps we shall know more about them—we think. But that is just what commits us to a particular way of looking at the matter. And now the analogy which was to make us understand our thoughts falls to pieces. So we have to deny the yet uncomprehended (...) process in the yet unexplored medium. And now it looks as if we had denied mental processes. And naturally we don’t want to deny them. (shrink)

How does the philosophical problem about mental processes and states and behaviourism arise?—The first step is the one that altogether escapes notice. We talk of processes and states and leave their nature undecided. Sometimes perhaps we shall know more about them—we think. But that is just what commits us to a particular way of looking at the matter. And now the analogy which was to make us understand our thoughts falls to pieces. So we have to deny the yet uncomprehended (...) process in the yet unexplored medium. And now it looks as if we had denied mental processes. And naturally we don’t want to deny them. (shrink)

This chapter focuses on sections iv and v of part II of Wittgenstein’s Philosophical Investigations. In these sections Wittgenstein deals with two closely knit problems: our knowledge of other minds and the subject matter of psychology. The interpretation of Wittgenstein’s treatment of these problems cannot remain confined to these sections, however, as equally important references to these problems occur elsewhere in the Investigations as well as in the Remarks on the Philosophy of Psychology. Moreover, Wittgenstein’s very treatment of the two (...) problems is intertwined with his treatment of some other problems in the philosophy of psychology. For instance, in the context of his discussion of the subject matter of psychology, he points out analogies with problems pertaining to theories of perception. I take these analogies seriously and, therefore, a discussion of perception is interwoven as appropriately. Yet another preliminary remark. Although references to other philosophers and psychologists do not occur in sections iv and v, it does not follow that they were not written in response to others. On the contrary, a substantial part of these (and other) sections is the product of reflecting upon theories produced by Russell, James and Köhler. In my view, the best way to understand Wittgenstein is to involve the standpoints of his adversaries explicitly into the discussion. Otherwise seemingly trivial questions and condensed remarks, gain power and depth when explicitly seen as undermining and reversing dominant theories in philosophy and psychology. (shrink)