Abstract
During the past two decades the use of rational decision models, especially those which assume self-interest motivation, has diffused widely throughout sociology, including the fields of collective behavior and social psychology. This trend is interesting as a datum for study in the sociology of sociology, for what it reveals about changing assumptions concerning the nature and dynamics of social behavior, and as a trend that is sometimes beneficial and sometimes deleterious. My objective is to raise questions based on these three kinds of interest, and to suggest some answers.

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