Most people have a need for equity in relationships
Social exchange theory suggests that partners seek equality or a balance between costs and benefits. In contrast, Walster et al. propose that equity is more important where both partners' level of profit should be roughly the same
Who proposes equity theory?
Walster et al.
Underbenefitting and overbenefitting can lead to dissatisfaction
The underbenefitted partner is likely to be the least satisfied and their feelings may be evident in anger and resentment
The overbenefitted partner may feel less dissatisfied but is still likely to feel discomfort and shame
Equity is about the fairness of the ratios. It is not the size or amount of the rewards and costs that matters- it is the ratio of the two to each other
For example, if one partner puts a lot into the relationship but at the same time gets a lot out of it, then that will seem fair enough