These areas are general characteristics of incidents and individuals; economic impact; legislation/jurisdiction; intake; status offenses; and abused, neglected and dependent juveniles. Also, emotionally disturbed and mentally retarded juveniles, detention and correctional facilities, confidentiality of juvenile records, and case disposition and classification are profiled. The assessment was limited to information available in the following materials: the 1977 Uniform Crime Report, the 1977 Children in Custody report, the 1977 Sourcebook on Criminal Justice Statistics, and the 13-volume series of NJJSAC draft reports developed in Phase I. Appendixes contain arrest trends by age and major incident category: adult and juvenile, 1968-77; total juvenile arrests by age: 1977; arrest trends of juveniles by sex: 1968-77; total juvenile arrests: by sex, 1977; total juvenile arrests: by race, 1977; arrest trends of juveniles: by location, 1976-77; total juvenile arrests: by location, 1977; and total juveniles held in public juvenile detention and correctional facilities: 1971-75. Eight references are given. (Author abstract modified)