In extrapolation of WilhelmWundt’s suggestion to apply Weber-Fechner’s law to apperception and in slight modification of Davis Lewin’s definition of generalized interval systems we propose a four-dimensional space A as a model for an active tone system. This space A is also a group acting on itself. Its elements are interpreted in two ways, (1) as tone loci, i.e. as states of apperceptive proce...

To deal with musical ambiguity is an emprically difficult but promising task. The paper draws a connection between very general issues of mental activity on the one hand and concrete phenomena of tonal ambiguity on the other. We think that a convincing understanding of ambiguity in the surface tonality of musical pieces (like V/I I/V substitutions or enharmonic identifications) will eventually ...

I discuss three elements of Dennis Schulting’s new book on the transcendental deduction of the pure concepts of the understanding, or categories. First, that Schulting gives a detailed account of the role of each individual category. Second, Schulting’s insistence that the categories nevertheless apply ‘en bloc’. Third, Schulting’s defence of Kant’s so-called reciprocity thesis that subjective ...

This text, which takes Cronbach and Gleser’s diagnostic decisions utility model as its major point of reference and the Thematic Apperception Test as its example, is devoted to the issue of the diagnostic value of projective techniques. The paper provides a brief discussion of the classification of projective techniques and shows how information on the category of tool can be used to select the...

This excellent book is divided into two sections; the first eight chapters are concerned with the TAT (Thematic Apperception Test) and the remaining three chapters and appendix are devoted to the CAT (Children's Apperception Test). It is a highly specialised volume, meeting the need for a current and comprehensive review of these two tests. Because of this, it is unlikely to be of much practica...