Self-determination theory and motivational interviewing in exercise

(from the chapter) In this chapter we aim to show that the practice of motivational interviewing and the principles of self-determination theory complement each other to provide a comprehensive account of the processes required to achieve successful behavior change. We first outline the background to motivational interviewing and its basic principles. We discuss the fundamental assumption, shared by motivational interviewing and self-determination theory, that humans have an inherent tendency for growth toward psychological integration and the resolution of intrapersonal conflicts, although the motivational processes facilitating these outcomes have been somewhat differently conceptualized in the two approaches. Furthermore, we show that there is considerable overlap in the social-environmental facilitating factors proposed by motivational interviewing and self-determination theory, and that the efficacy of motivational interviewing can be understood in terms of the provision of supports for the satisfaction of psychological needs as outlined in self-determination theory. We discuss the principles of motivational interviewing in light of the differentiated conceptualization of extrinsic motivation in self-determination theory. In so doing we suggest that an understanding of the tenets of self-determination theory can inform the practice of motivational interviewing by emphasizing the need to promote freedom from internally imposed pressure and control, not just the need to avoid coercion and pressure from others. Finally, we draw upon these considerations to present some suggestions for helping exercise practitioners promote autonomous motivation for exercise among their clients. (PsycINFO Database Record (c) 2010 APA, all rights reserved) (chapter)