Book reviews

Animal Behaviour. By R. A. Hinde. New York: McGraw-Hill. 1970. Pp. xviii + 876. 149s.

Experimental Psychology: Methodology, Psychophysics and Learning. By M. R. D'Amato. New York: McGraw-Hill. 1970. Pp. xxiv + 727. 101s.

Principles of Perceptual Learning and Development. By Eleanor J. Gibson. New York Appleton-Century-Crofts, Meredith Corporation. Pp. 537. $9.35.

Perception through Experience. By M. D. Vernon. London: Methuen. 1970. Pp. 306. 55s. (£2.75)

Contingencies of Reinforcement. By B. F. Skinner. New York: Appleton Century Crofts. 1969. Pp. xv + 319. Cloth: £3. $6. Paper: £18s.

Annual Reciew of Psychology. Edited by P. Mussen and M. Rosenzweig. Palo Alto: Annual Reviews Inc. 1970. Pp. 674. $10.50.

Brain, Beharioicr and Evolution. Basel and New York: S. Karger AG. 6 issues per year $18.60.

Physiology and Behaviour: an International Journal. Oxford and New York Pergamon Press Ltd. 6 issues p.a. £20. (£3 10s. to individuals).     

Attention in transcription skill

Two viewpoints of attention are compared: one assumes restrictions in a central processor and the other restrictions on simultaneous activity in networks of processes. The distinction between central and distributed processing may not be strongly testable but the distinction between simultaneous and consecutive processing, for different processing functions, is. An analysis of data from a study on learning to type shows very clearly that simultaneous processing of stimulus input and response output is possible.     

Timing in the motor programming of typing

In developing a theory of motor programming of skilled performance it has been suggested that an abstract, structural representation in the program specifies both a sequence of responses and expressive features of the sequence, such as timing, stress and intonation, which are mapped separately into the response output. In the case of typing, which does not require expressive features, it has previously been assumed that response timing is governed more simply by a timekeeper providing a stochastically regular beat. Two sets of specially constructed texts were given to a fast typist and the results support the idea that skilled typing is paced by a regular beat. They also show that there were systematic rhythmic departures from the beat, which arose from contingencies of keyboard movement but were not the simple consequences of these; rather they may be regarded as structured anticipations of the contingencies, and as such are analogous to the expressive features of speech and playing music.     

Extent-of-motion thresholds under subject-relative and object-relative conditions

The experiment was designed to discover the threshold extent of motion at medium speeds amounting to 41, 82, and 164 min./sec., and to compare the perception of motion arising from subject-relative displacement with the perception of motion arising from object-relative displacement. Extent thresholds were found while velocity was kept constant. Different groups of ten Ss were used for each displacement velocity, and for each S the extent threshold was twice obtained by the method of constant stimuli, once under subjectrelative and once under object-relative displacement conditions. Sensitivity to brief displacements of a continuously visible target was high; average thresholds ranged from 1.0 to 4.4 min. under the various conditions employed. The thresholds were higher for subject-relative conditions and the slower displacement velocities and lower for objectrelative conditions and faster displacements.     

Features of Interview Questions Associated with Attenuation of Symptom Reports

Previous studies have suggested that discrepant reporting in a test–retest reliability paradigm is not purely random measurement error, but partly a function of a systematic tendency to say no during retest to questions answered positively at initial testing (attenuation). To examine features of interview questions that may be associated with attenuation, three raters independently assessed the structural and content features of questions from the Diagnostic Interview Schedule for Children (version 2.3) and linked these to data from a test–retest reliability study of 223 community respondents (parent and child reports). Results indicated that for both parent and youth reports, item features most strongly associated with attenuation were (a) being a stem question (asked of all respondents, regardless of any skip structure); (b) question placement in the first half of the interview; (c) question length; (d) question complexity; or (e) requiring assessment of the timing, duration, or frequency of a symptom. Findings may be explained by participants' conscious efforts to avoid further questions or by their learning more about the nature and purpose of the interview as they gain more experience; alternatively, findings may represent a methodological artifact of structured interview design.     

Interactive effects of social context and sex role identity on female self-disclosure during the acquaintance process

Female subjects who differed in masculinity and in femininity self-disclosed to a same-sex confederate in contexts that made either social/expressive motives or instrumental motives particularly salient. The confederate spoke first on each of four disclosure topics, presenting either intimate or nonintimate information in her disclosures. The results were consistent with our primary assertion that measures of sex role identity would accurately forecast contextual variations in female self-disclosure. Specifically, femininity tended to promote self-disclosure in social/expressive contexts while clearly inhibiting such exchanges in the instrumental context. Supplementary data revealed that the tendency of highly feminine participants to close up in the instrumental context stemmed not from problems in their contemporaneous interpersonal relationships with their partners, but rather from a concern that disclosing too much might adversely affect their partners' evaluation of their competencies. Although masculinity did not exert direct effects of female self-disclosure within any particular context, it did have an influence, for subjects high in femininity were highly self-revealing across contexts if they were also high in masculinity (i.e., androgynous).This research was supported by National Institute of Mental health Grant MH 43726-01 to David R. Shaffer.