Studies 248 adolescents who had been in a Serious Offender Program to examine the relative predictiveness of: a common risk assessment tool; a battery of psychological tests; and a combination of demographic and theoretical factors. Regression procedures indicate that the following are significant predictors: prior commitment; male; gang members; carry weapons; and peers present during committing of offense. (Contains 108 references, 5 tables, and an appendix.) (Author/GCP)