Attractions and constraints as determinants of relationship commitment: Longitudinal evidence from gay,lesbian, and heterosexual couples

The proposition that commitment to a relationship is uniquely determined by forces that draw one to the relationship (attractions) and forces that prevent one from leaving the relationship (constraints) was tested with five annual waves of longitudinal data from two samples: both partners from 155 married couples and both partners from 57 gay couples and 50 lesbian couples. Growth curve analyses that controlled for the interdependence of partners' scores indicated that, for both heterosexual and gay/lesbian couples, variability in one's own commitment was uniquely predicted by one's own attractions and one's own constraints, interactions involving one's own attractions and one's own constraints, and one's partner's attractions. It is concluded that attractions and constraints exert unique dynamic effects on maintaining a close relationship.