Table I. Correlation of social antecedents with adaptiveness of defenses, a. Sample size is reduced. In order to control confounders, men with IQ<86, depression, alcohol dependence, and schizophrenia have been excluded. *P<.05, Spearman correlation coefficient was the statistic used.
| Antecedent | "Maturity" of defenses | ||
| College | Core City | Terman | |
| n = 154a | n = 189a | n = 40 | |
| Years of education | .13 | .10 | .33* |
| IQ | .04 | .14 | .07 |
| Parental social class | .11 | .00 | .13 |