Robert E. Ployhart, recipient of the Award for Distinguished Scientific Early Career Contributions to Psychology, is cited for innovative work in examining reactions to staffing practices and efforts to enhance the acceptability of recruitment and staffing practices; for exemplary use of applied statistical models in examining multilevel effects and longitudinal hypotheses; and for leadership in promoting the use of multilevel models in selection research and in providing informative examples of such efforts. Ployhart's conceptual models of the manner in which individual differences might be aggregated and affect outcomes at different levels of analysis than are usually evaluated in validation research have been groundbreaking. In addition to the citation, a biography and selected bibliography of Ployhart's works are presented.