In attempting to make sense of others, perceivers regularly construct and use categorical representations (e.g. stereotypes) to streamline the person perception process. A debate that has dominated recent theorizing about the nature and function of these representations concerns the conditions under which they are activated in everyday life. The present article reviews this work and considers the automaticity of category activationin person perception.But then, the people became terribly afraid and anxious. For lo! the Cognitive Miser had become transformed, by the magic of further research, into the Cognitive Monster. No longer did the creature use simplifying categories and stereotypes by choice or strategy, their use had become an addictionuncontrollable, not a matter of choice at all-and the creature's Will was powerless to do anything else. 'We must do something!' cried the people of Social Psychology. 'We must slay the monster!' And so their heroes came forth. Bargh (1999, p. 361) In identifying social cognition as the dominant theme in contemporary experimental social psychology, it is gratifying to acknowledge the prominent contribution that British research has made to the development of work in this area. Motivated by the desire to understand how perceivers make sense of their social worlds, researchers have employed a social-cognitive framework in an attempt to inform a range of issues in experimental social psychology. The fruits of this approach have been many. To give but a brief avour of some of the topics that have bene ted from a cognitive analysis of everyday thinking and behaviour, social-cognitive approaches have advanced our understanding of attitudes, language, attributions, the self, everyday memory, judgment and decision-making, and person perception. In each of these areas, moreover, British research has played an important role in shaping the intellectual landscape. By providing process speci city and theoretical coherence, social-cognitive approaches have illuminated numerous dark corners of the discipline. Given the focus of this special issue (i.e. perception and cognition), however, our emphasis in the present article is on person