The most widely cited measure of goal commitment in organisational and consumer psychology, derived from Klein et al.'s meta-analytic review of 83 prior goal commitment operationalisations across 25,000 participants. Alpha consistently 0.76–0.87. Goal commitment is the volitional determination to pursue and attain a specific goal — conceptually distinct from goal importance (how much one values the goal outcome) and goal acceptance (agreement with the goal). The GCS captures both reluctance to abandon the goal and active determination to reach it. In Locke and Latham's goal-setting theory, commitment moderates the goal difficulty–performance relationship — challenging, specific goals produce better performance only among committed individuals. In consumer research, goal commitment predicts purchase follow-through, brand loyalty aligned with aspirational goals, adherence to diet and exercise intentions, and resistance to temptation when a committed goal competes with hedonic impulses. Goal commitment also moderates the effectiveness of self-referential advertising — committed consumers respond more strongly to messages reinforcing their existing goal. Widely used in sales force research, service employee motivation, consumer goal pursuit, and health behaviour change. Goal commitment is goal-specific — always assessed with reference to a particular named goal.
Klein, H.J., Wesson, M.J., Hollenbeck, J.R., & Alge, B.J. (1999). Goal commitment and the goal-setting process: Conceptual clarification and empirical synthesis. Journal of Applied Psychology, 84(6), 885–896.
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