“…Indeed, the selection method eliminated the "drop-outs," only one boy in the sample had served a training school senrence, fewer than 25% of the delinquents had committed acts which could be rated four or more on the severity continuum, and fewer than 20% had a record of more than one offense in the 2 yr. preceding the study. Many efforts have been made to predict delinquency with the MMPI (Briggs, Wirt, & Johnson, 1961;Gottesman, 1959;Hathaway & Monachesi, 1953, 1957, 1963Rempel, 1958;Wirt & Briggs, 1959), the Rorschach (Taniguchi, DeVos, g: Murakami, 1958), the Szondi (Coulter, 1959), the Glueck and other special instruments. All of these studies have achieved comparable results, and all are implicitly based on the ass~imption that there is a trait, or set of traits, which is antecedent to all delinquent behavior.…”