P: there is research support including RL studies of relationships - confirming equity theory to be more valid than SET
E: Utne (1984) surveyed 118 recently married couples, measuring equity with 2 self-report scales. The couples had been together for 2 years before being married.
E: Researchers found that couples who considered their relationship equitable were more satisfied than those who were over or under-benefiting.
L: This research confirms the central assumptions of equity theory, suggesting the theory has high internal validity.