A French Application of the CPI Social Maturity Index

Abstract

A social maturity index based on six scales of the California Psychological Inventory was developed on samples of 2,146 nondelinquent and 881 delinquent males. The index was cross-validated on 2,482 nondelinquent versus 409 delinquent American males, 659 nondelinquent and 38 delinquent Italian men, and 113 Japanese male nondelinquents versus 36 delinquents. All mean differences were highly significant, and Ss in the three cross-validating samples were classified with percentage accuracies of 92.3 (American), 83.8 (Italian), and 83.2 (Japanese) by a cutting score of 45. New results for 1,270 males and 391 females tested with a French edition of the index give similarly positive findings, and classificatory hit rates of 86.2% for males and 90.3% for females.