A construct validation study of the Haan defense scales

This study tested the validity of the Haan (1%5) psychological defense scales, which have shown promise for clinical and research assessment. Three subject samples participated: ex‐inpatients (n = 80) from a longitudinal high‐ risk project, their spouses (n = 104), and private college students (n = 124). Valid defense scales were predicted to show a specific pattern of correlations with MMPI ego‐strength and standard scales across all three cohorts, with measures of symptoms among the ex‐inpatients, and with overall severity of pathology for all groups in a pattern consistent with Vaillant's defense model. The regression scale showed excellent validity, and projection received equivocal support, but the other scales were not validated. Denial appeared to reflect psychological health.