The Marital Disillusionment Scale, together with measures of divorce proneness, marital disaffection, work addiction, sensation seeking, intimacy, and marital satisfaction (using the subscales Marital Disharmony and Disaffection), was administered to 116 married people (42 men, 74 women) in a university town in the western USA. Scores on the Marital Disillusionment Scale had significant positive correlations with scores on the Marital Instability Scale (r = .54), the Marital Disaffection Scale (r = .72), and the two subscales Disharmony (r = .53) and Disaffection (r = .75) of the Marital Satisfaction Inventory. Scores for the Marital Disillusionment Scale were negatively correlated with those for the Personal Assessment of Intimacy in Relationships Inventory (r = -.65) but were not significantly associated with scores for the Work Addiction Risk Test and the Brief Sensation Seeking Scale. The results support the convergent and discriminant validity of the Marital Disillusionment Scale.