Book Reviews 117

researchers and students concerned with social interaction, as well as to clinical psychologists.

OMGAAN MET MACHT, M. Mulder. Amsterdam: Elsevier, 1977. No. of pages: 258.

A clear expos6 of the Power Distance Reduction theory and of its social relevance. Different kinds of power, their origins, and effects are studied. Methods are developed for better understanding and improving of power relations at different levels. An important effort to demystify the notion of power.

ESPERIMENTI DI PSICOLOGIA DI GRUPPO, edited by R. de Negri Trentin. Milan, Martello-Giunti, 1977. No. of pages: 559.

An Italian reader of classic investigations in the field of group dynamics. The origin of all these important texts is American.

ASPETTI COGNITIVI DELLA SOCIALIZZAZIONE IN ETA EVOLU- TIVA, edited by A. Palmonari and P. E. Ricci Bitti. Bologna, I1 Mulino, 1978. No. of pages: 168.

The title of the book was also the theme of a seminar held at the beginning of 1977 in Bologna. The principal contributions to this seminar were delivered by A. Fonzi, E. Ponzo, R. Schaffer and W. Doise, and are published in this book together with shorter reports as well as interventions during the discussion sessions.

COMPORTAMENTO NON VERBALE E COMUNICAZIONE, P. E. Ricci Bitti and S. Cortesi. Bologna, I1 Mulino, 1977. No. of pages: 221.

The authors review rather exhaustively studies on non-verbal communication. Much importance is given to the regulating of interindividual interaction by non-verbal communication, the study of different systems of communication from an interdisciplinary point of view, the links between verbal and non-verbal communication, the mastering and improvement of necessary communication skills, the role of pre-verbal communication in the acquisition of language, the links with some forms of autism in children. The book is interesting not only as a source of information but also because it carefully systematizes a rather heterogenous area of research.

SOCIALE PSYCHOLOGIE IN VERANDERING, edited by H. Wilke and G. J. Kok. Alphen aan den Rijn/Brussells, Samson, 1978. No. of pages: 220.

Eleven Dutch authors provide reports on different fields of social psychology. They were apparently instructed not to be exhaustive but to point to new

11 8 Book Reviews

developments. The following areas are examined: non-verbal communication, research on attitudes, conformity, power, group polarization, communication structures, group performance, research on action, aggression, partner choice, intergroup relations, and educational discrimination.

COLIN FRASER University of Cambridge, U. K .