As a maladaptive behavioural outcome, procrastination should correlate with beliefs about ability and achievement goals that are themselves relatively maladaptive. Accordingly, procrastination should be predicted by entity as opposed to incremental implicit theories (i.e., viewing attributes such as ability as relatively fixed vs. malleable, respectively) and by avoidance goal orientations as opposed to approach goal orientations. Among 397 undergraduates, entity beliefs and mastery-avoidance goals positively predicted procrastination whereas incremental beliefs and mastery-approach and performance-approach goals negatively predicted procrastination. The prediction of procrastination by entity beliefs was mediated by mastery-avoidance goals. Results are cast in terms of self-regulatory models of procrastination. (Contains 2 tables.)