A self-report measure of procrastination tendencies was developed and tested by relating it to a behavioral measure of procrastination and to a self-report measure of general efficacy. A 72-item Likert scale was written and administered to 50 college juniors and seniors. A factor analysis of the results yielded two factors that formed the basis for reducing the scale to 35 items with a resulting reliability of 0.90. A comparison of scores on the 35 items to performance on a self-regulated performance task--the Voluntary Homework System (VHS), developed by B. W. Tuckman and T. L. Sexton in 1989--yielded a correlation of -0.54, while the 35-item scale correlated at -0.47 with scores on the General Self-Efficacy Scale of M. Scherer et al. (1982). The latter scale correlated at 0.29 with VHS scores. A subsequent factor analysis of scores of a sample of 183 subjects from the same population on the 35-item scale yielded a single-factor structure and a condensed scale of 16 items with a reliability of 0.86. This short scale was recommended for use as a means of detecting students who are likely to procrastinate on college requirements. The Procrastination Scale used is included. (SLD)