"Two psychiatrists closely studied 196 lower-class juvenile delinquents (and their families) whose court cases were from 1979-80. The study's lack of randomness is a partial flaw. The typical delinquents, three-fourths males, are products of urban life, not of the process or rural uprooting; come from disintegrated families (neither two-parent nor extended), where parents' mental afflictions and low IQ were common, the discipline of children chaotic, and affection largely absent. Offenses ranged widely, including some striking ones, e.g., males who committed sexual violations victimized younger boys more often than they victimized females"--Handbook of Latin American Studies, v. 57.