INFORMATION IS INCLUDED ON THE FIRST KNOWN EXAMPLE OF THE JOINT OCCURRENCE OF SOCIOPATHIC PERSONALITY IN IDENTICAL TWINS WHO ARE MEMBERS OF A SET OF FRATERNAL TRIPLETS. USE OF EEG'S FOR PSYCHOPATHIC AND CRIMINAL POPULATIONS IS DISCUSSED IN GENERAL, IN REFERENCE TO A STUDY OF 72 ISRAELI JUVENILE DELINQUENTS, AND IN REFERENCE TO 100 INCARCERATED DELINQUENT GIRLS. A PROFILE IS PRESENTED OF 100 DELINQUENT GIRLS APPEARING IN SUBURBAN COURTS, AND THE FOLLOWING THERAPEUTIC APPROACH IS SUGGESTED FOR TREATING DELINQUENTS: (1) DISCUSSION TO ACHIEVE UNDERSTANDING, (2) CONSTRUCTIVE THERAPY TO MAKE THE OFFENDER AWARE OF HIS DESTRUCTIVE IMPULSES, (3) DEPTH THERAPY TO REVEAL THE SUBCONSCIOUS, AND (4) SOCIAL THERAPY TO TEACH THE OFFENDER TO ESTABLISH CONTACT WITH OTHERS. TWO STUDIES CONCERNING UXORICIDE--KILLING OF A WIFE BY A HUSBAND--ARE REPORTED: A STUDY OF 30 CASES FROM THE VIRGINIA STATE PENITENTIARY AND CASES FROM ISRAEL. AN INVESTIGATION WAS ALSO CONDUCTED INVOLVING 83 CASES OF FELONIOUS HOMICIDE INVOLVING PREADOLESCENT VICTIMS IN DETROIT, MICH., OVER A 25-YEAR SPAN FROM 1940 TO 1965, AND BACKGROUND INVESTIGATION WAS COLLECTED ON 546 WOMEN PRISONERS REVEALING THAT 18.2 PERCENT OF THEIR FATHERS AND 13.2 PERCENT OF THEIR MOTHERS DIED BEFORE THE WOMEN WERE 15 YEARS OF AGE. A STUDY IS REPORTED ON A 5- TO 6-YEAR FOLLOWUP OF 100 PATIENTS ADMITTED TO A PSYCHIATRIC HOSPITAL BECAUSE OF HOMICIDAL THREATS, AND FINALLY A DISCUSSION IS INCLUDED OF THE XYY CHROMOSOME COMPLEMENT.