Introduction to the Symposium on Drug Improvement of Memory

This paper introduces a symposium in which three main speakers discussed the prospect that drugs may improve cognitive functioning, including memory. Even though the participants agreed that presently available drugs can alleviate memory disorders only to a limited extent and do not increase ability of well-functioning individuals, it is important to consider social implications of drugs that might increase learning ability and intelligence. It is also important to consider, as alternatives to drugs, behavioural approaches to improving abilities that do not share possible drawbacks of pharmacological treatments.     

An independence of mechanism in the origins of reading and classification-related semantic distance effects

Some members of prespecified classes are accepted as members more rapidly than others. This has normally been ascribed to processes operating at a stage where the members are evaluated with respect to the category. An alternative locus could be at an “encoding” stage. It is shown with two experiments that this seems most unlikely, and evidence emerges to support the idea that word-naming and classification tasks show a crucial independence of process. It would seem to be necessary to reevaluate any simplistic notions of processing stages in semantic verification tasks.     

An investigation of the reliability of the Rosenzweig Picture-Frustration (P-F) Study, Children's Form

Presents data on the retest and split-half reliability of the Rosenzweig Picture-Frustration (P-F) Study, Children's Form, for two groups of subjects (aged 10-11 and 12-13 years, respectively), each group tested twice at an interval of three months. It was found that the retest reliability for all scoring categories (except O-D) were statistically significant (.01 or .05 level). GCR proved stable for the younger group (r = .53) but not for the older group. The difference here may be due to the less comfortable retest conditions prevailing for the older subjects. Reliability by retest was consistently higher than by the less appropriate split-half method, but the latter proved, nevertheless, to be in the main favorable.     

Book reviews

Techniques of Photostimulation in Biology. Edited by B. H. Crawford. Amsterdam: North-Holland Publishing Company. 1968. Pp. 317. £5 17s.

The Figure-ground Phenomenon in Experimental and Phenomenological Psychology. By Jan C. Bauman. Stockholm: Published by the author. 1968. Pp. 269.

Methods for the the Measurement of Psychological Performance. (IBP Handbook No. 10). By S. Bieshevel. Oxford and Edinburgh: Blackwell Scientific Publications, 1969. Pp. iv + 98. 20s.

Experimental Neuropsychology—A Laboratory Manual. By Benjamin L. Hart. San Francisco. W. H. Freeman and Company. 1969. Pp. 102. £2.

Studies in Cognitive Development. Edited by D. Elkind and J. H. Flavell. London: Oxford University Press. 1969. Pp. xix + 502. 84s.     

The problem of reinterpretive distortions in group psychotherapy with borderline patients

Group psychotherapy with borderline patients is challenging work. A group in which the core of patients falls within this nosological category is described. The phrase reinterpretive distortion is used to characterize an aspect of these patients' communication style which makes their effective treatment quite difficult. Examples of the phenomenon are offered, as is an explanation of the dynamics which give rise to it and the functions it seems to serve. Effective ways to deal with reinterpretive distortions in the group psychotherapy context are suggested.     

The influence of response compatibility on a semantic classification task

An experiment was carried out in which Ss had to decide whether or not a target word was a member of a prespecified semantic category. Poorly representative, or low conjoint frequency (LCF) exemplars were accepted less rapidly than representative, or high conjoint frequency (HCF) exemplars. This effect was considerably enhanced by requiring an incompatible response in which the Ss were asked to say ‘No’ when the target was a member of the category. The results show that the category membership judgement is a natural affirmative, and that the semantic distance effect of conjoint frequency has a magnitude dependent upon the processing demands of the task in which it is measured. The results are discussed in relation to theories of the mechanisms of category membership judgements. It is suggested that the influence of compatibility may be in load sharing between activation of a response rule and the judgement task per se.     

How does the extraversion personality trait influence false recall with the Deese–Roediger–McDermott (DRM) paradigm?

Relative to more introverted persons, extraverts have been found to exhibit better recall and recognition in a range of memory paradigms including demonstrating a superior semantic priming effect. The present study sought to establish whether this aspect of personality might be associated with the false memory paradigm developed by Deese, Roediger, and McDermott (the DRM paradigm). Lists containing semantically related words were presented to extraverts, ambiverts, and introverts. Compared to the other two groups, extraverts falsely recalled more critical lures (words that although semantically related were not in the original lists) and non-list words. The results are discussed in relation to the concept of spreading activation.