Eleven papers, most of them with an experimental or empirical viewpoint, discuss childhood behavior disorders. R. Lapouse and M. Monk present an epidemiologic study of behavior characteristics; J. Roach and others describe sociopsychological characteristics of a child guidance clinic caseload; D. Peterson treats behavior problems of middle childhood; and H. Quay and others consider pupil personality patterns in special classes for the emotionally disturbed. The following topics are also explored: lower class culture as a generating milieu of gang delinquency, by W. Miller; recidivism, psychotherapy, and delinquency, by C. Franks; mothers as therapists for their children, by R. Wahler and others; reinforcement and behavioral deficits of autistic children, by C. Ferster; effects of Chlorpromazine on behavior and learning ability of hyperactive children, by J. Werry and others; curriculum and disordered behavior, by W. Rhodes; and a 30-year followup study on the adult psychiatric status of 150 subjects who had been childhood behavior problems, by P. O'Neal and L. Robins. (LE)