This paper provides evidence for the reliability and validity of the Preventive Coping Resources Inventory (PCRI) instrument designed to measure coping resources useful for prevention based on previous research. It specifically looks at the construct validity of the PCRI; the convergent and discriminate validity of the PCRI with related constructs; and the criterion-related validity of the PCRI as a predictor of perceived stress levels and symptomatology. Data was collected from 252 undergraduate students from a large Southwestern university. Analysis conducted supported the construct validity of three of the six hypothesized preventive resources: perceived control, self-confidence, and social comfort. Further analysis is needed to determine whether the three scales (self-acceptance, organization, humor) that were not supported in the factor analysis should be included as dimensions of preventive coping resources. In general, the factor and scale scores of the PCRI correlated with higher coping resources than with other closely related constructs. Overall, findings suggest that the PCRI may provide meaningful factors useful for preventive coping such as perceived control, self-confidence, and social comfort. Further exploration is needed to determine if the scales of the PCTI are distinct from other coping instruments in measuring resources that are most useful for prevention. (Contains 53 references.) (JDM)