A model of the cognitive structures and processes thought to compose the human information-processing system is presented. Possible difficulties in processing information are discussed because these may contribute to client problems and concerns. Recent work in applying understandings, from human information processing to an elucidation of client change in counseling, is reviewed. Information-processing models of client-centered and rational-emotive counseling are constructed that relate counseling skills and strategies employed in these approaches to hypothesized client cognitive changes. An integrated view of client cognitive change in counseling also is presented. Possible directions for research and theorizing in counseling and counselor education from the perspective of human information processing are mentioned briefly.It is obvious to anyone at all familiar with the field of psychology that cognitive approaches have come to dominate this field in recent years. Foremost among these cognitive approaches is that of information processing. Information-processing theorists in psychology attempt to describe the cognitive structures and processes by which humans perceive, attend, code, store, retrieve, and respond to information in the environment and information previously stored in internal cognitive structures.Concomitant with the growth of cognitivism in psychology has been an increasing emphasis in counseling on cognitively oriented treatment interventions (e.g., Ellis, 197 1;Meichenbaum, 1977; Stone, 1980). To date, such interventions have been developed in the absence of a Jack Martin is an assoczate professor,