This report describes the development and validation of the Weekly Activity Record (WAR), an instrument for the analysis and prediction of criminal behavior and recidivism. The 18 items on the instrument record the hours per week devoted to various activities: vocational, avocational, social, physical, antisocial, personal, and interpersonal. The WAR was used with other behavioral assessment instruments in interviews with 117 male prison releasees. The data in this report were taken from those interviews and validated against the Law Encounter Severity Scale (LESS), a criterion for law violation and recidivism. Releasees with minimal law encounters were found to devote significantly more time to positive activities (those that contribute to successful postrelease adjustment) than did those releasees who had more severe law encounters. WAR scores of the releasees were also compared to those of noncriminal populations. (Author)