Assessment and prediction constitute one of the foundations of the criminal science model. This foundation is grounded in the assumption that knowledge gained through research and observation can be used to evaluate, classify, and predict criminal behavior. The first section of volume 2 systematically examines evaluation and classification procedures. In addition to the investigation of specific assessment techniques and a review of major systems of inmate-criminal classification, this section explores such prediction problems as institutional adjustment, recidivism, and dangerousness. The other foundation of criminal science investigated in volume 2 is intervention. The discussion focuses on selected person, situation, and interactive issues. Therapeutic, medical, and choice procedures are reviewed as person-oriented strategies, and situation-oriented concerns such as prevention and social policy decisions are probed as well. Interaction-based strategies consider ways in which the individual offender interfaces with the criminal justice system through trends in retribution, deterrence, incapacitation, rehabilitation, and restitution. 18 tables and 9 figures