This study develops a decision-making process model for participant sport consumption that integrates self-participant image congruency (SIC), attitude, and intentions. SIC is the degree of congruency between one's self-concept and her/his participant's stereotypical image in a given context of sport or exercise involvement. Attitudes toward participation refer to an overall utilitarian evaluation of the behavior whereas intentions reflect decisions (Fishbein, 1980). A structural model is developed that incorporates SIC (as image-based evaluations) and attitudes (as utilitarian evaluations) as antecedents of intentions (as decisions) using LISREL8. Structural equation modeling analyses revealed that (a) both SIC and attitudes influence one's decision to initiate sport or exercise participation in the consumption context but attitudes have greater impact than SIC, and (b) both actual and ideal self-concepts are relevant in image-based decision-making processes.