THIS CALIFORNIA BASED PROJECT WAS UNDERTAKEN TO ORGANIZE THE RESULTS OF AN EXTENSIVE DATA COLLECTION ON THE YOUTHFUL OFFENDER AND TO PROVIDE A RESOURCE FOR THE CORRECTIONAL THEORIST WORKING WITH THIS MOST IMPORTANT OFFENDER GROUP. BACKGROUND DATA, PERSONALITY AND OTHER TEST RESULTS, ACADEMIC AND VOCATIONAL SKILLS AND ATTITUDES, AND PSYCHIATRIC FACTORS, AS WELL AS OFFENSE RELATED INFORMATION AND THE RATINGS AND RECOMMENDATIONS OF INSTITUTIONAL STAFFS WERE OBTAINED ON 4,146 MALE CALIFORNIA YOUTH AUTHORITY PAROLEES. THIS EFFORT WAS ENVISIONED AS A PREREQUISITE TO THE DEVELOPMENT OF TYPOLOGICAL DESCRIPTIONS OF YOUTHFUL OFFENDERS THAT MAY ULTIMATELY INFLUENCE THEIR TREATMENT AND REHABILITATION. AFTER PROVIDING A BRIEF BACKGROUND ON THE ENTIRE STUDY AND A REVIEW OF THE LITERATURE ON VIOLENCE AND VIOLENT OFFENDERS, THIS VOLUME PRESENTS COMPARATIVE DATA ON SIX VIOLENCE CLASSIFICATION SUBGROUPS COVERING USE OF VIOLENCE, USE OF WEAPONS, AND ALCOHOL USE IN RELATION TO INJURY OF VICTIMS. USING THESE VIOLENCE FACTORS AS CONTROLLED VARIABLES, DATA IS THEN PRESENTED ON THE CASE HISTORY, INTELLIGENCE, ACADEMIC, VOCATIONAL, PERSONALITY, PSYCHIATRIC, AND OFFENSE-RELATED FACTORS FOR THE STUDY POPULATION. THE RELATIONSHIP OF THESE FACTORS TO PAROLE SUCCESS IS ALSO ANALYZED. FOR OTHER DOCUMENTS ON THIS PROJECT, SEE NCJ-19482-19485, 38967-38968, AND NCJ-38970-38972....DMC