Developing a Commitment to Blood Donation: The Impact of One's First Experience1

The increasing demand for voluntarily donated blood has generated research concerned with the development of commitment to regular blood donation. Taking a developmental perspective, this paper explores the longitudinal impact of background, situational, and dispositional factors measured at one's first donation. Questionnaire responses from a sample of first‐time donors are analyzed and logistic regression analysis is employed to predict successive “continuation decisions” (the decisions to donate twice, three times, and four times). Results suggest that factors may change in their magnitude and direction of impact across the donor's career. Externally focused social pressures and rewards are dominant at the early stages and self‐originating factors at the later stages. Theoretical and practical implications of the findings are discussed.