Economic model, equality is the balance of rewards/costs for partners, can be divided based on couple interpretation
Over-benefitting = more rewards than costs, causing guilt
Under-benefitting = more costs than rewards, causing resentfulness
(+) A03: Utne (1984)
Self report survey on married couples, measuring percieved equity and contentment/relationship stability
Found partners in equal relations had higher commitment/happiness than over-/under-benefitted partners
No sex difference for equality
(-) A03: Self Report
Self report could have social desirability bias of relationships wanting to be percieved as strong and stable, may of influenced the results, reducing the validity of the theory
