This research further investigates an 8-dimension taxonomy of adaptive performance developed by Pulakos, Arad, Donovan, and Plamondon (2000) and the usefulness of past experience, interest, and self-efficacy predictors developed to measure these same 8 dimensions for predicting adaptive job performance. Participants in the concurrent, criterion-related validation study included 739 military personnel. They completed the 3 adaptability measures as well as more traditional cognitive and noncognitive predictors. Supervisors of the study participants rated their adaptive job performance. Results showed support for the 8-dimension model of adaptability. In addition, cognitive ability, personality, and the new adaptability predictors were shown to predict adaptive performance, with some past experience items adding incremental validity beyond the more traditional cognitive ability and personality measures. Results are discussed.