Studies suggest that overdependence and detachment have negative effects on psychological adjustment, health, and therapy process and outcome. In contrast, healthy dependency (ie., flexible, situation-appropriate help and support seeking) has beneficial effects in each of these areas. In this investigation, 90 college students (50 women and 40 men) completed a battery of personality scales including the Relationship Profile Test (RPT), a 30-item measure of destructive overdependence, dysfunctional detachment, and healthy dependency. RPT scores showed the expected patterns of subscale intercorrelations, gender differences, and links with measures of attachment style, identity, relatedness, and affect. Implications of these results for the construct validity of the RPT are discussed in the context of theoretical models of dependency-detachment.