This is an economic theory, ie applies economic concepts & terms to explain romantic relationships.
Has some agreement with SET- relationships involve the giving & receiving of resources.
However, it emphasises the importance of equity (or fairness) in relationship satisfaction- ie not mere profit, you should get what you deserve- this is different from SET.
The Equity Theory has a central assumption that people are most satisfied when they perceive that they are getting roughly what they deserve from any given relationship.
According to the this theory, an equitable relationship should be one where one's partners' benefits minus their costs, equals their partners' benefits less their costs, ie proportionate.
If people feel over-benefited, they may experience pity, guilt & shame.
If people feel under-benefited, they may experience anger, sadness & resentment.
Dealing with Inequity:
If people perceive inequity in their relationships, then they are motivated to restore it. Hatfield & Rapson (2011) suggest that this can be achieved in 3 different ways:
1-Restoration of actual equity- one or both partners makes real adjustments to set things right.
2-Restoration of psychological equity- to maintain peace & status quo, partners can convince themselves things are fair by distorting reality.
3-If couples are unable to restore equity in their relationship, they can leave it- either actually or emotionally.
Stafford & Canary 2006 Study:
Stafford & Canary were interested in how equity & satisfaction predicted the use of maintenance strategies, typically used in marriage- asked over 200 married couples to complete measures of equity & relationship satisfaction.
Each spouse was asked questions about their use of relationship maintenance strategies such as assurances (emphasising commitment to the relationship & affection), sharing tasks (household responsibilities & chores) & positivity (communicating in an upbeat & optimistic manner).
Stafford & Canary 2006 study findings:
Satisfaction was highest for spouses who perceived their relationships to be equitable, followed by over-benefited partners & under-benefited partners.
Relationship between equity & marital happiness appeared to be complementary- spouses who were treated equitably tended to be happier & so we more likely to engage in behaviours that contributed to their spouse's sense of equity & happiness.
Evaluation of equity theory- strength:
Stafford & Canary 2006 key study.
Supports equity theory & indicates its superiority to SET in explaining romantic relationships.
Evaluation of equity theory- strength:
Schafer & Keith (1980) found research support in real relationships.
Assessed levels of equity in hundreds of married couples of all ages.
Found that a dip in marital satisfaction during child-rearing years, correlated with a period of wives feeling under-benefited & husbands feeling over-benefited.
Supports Equity Theory & has an application for relationship therapies & counselling.
Evaluation of equity theory- strength:
Supporting evidence from the study of non-human primates.
Waal 2003 found that female monkeys became angry if they were denied a highly prized reward of grapes in return for playing a game.
The study echoes what researchers have found in human relationships & suggests that the perception of inequity has ancient origins.
But, this study was conducted on non-human animals (affects validity).
Evaluation of equity theory- weakness:
Gender differences in the importance of equity- Demaris et al (2010) point out that men & women are not equally affected by inequity in romantic relationships.
For example, women are more disturbed by being under-benefited than are men.
Suggests that not all males & females are sensitive are to inequity in the same way.
However, an increased emphasis on gender equality in modern marriages may lead women to be more vigilant about relationship inequity.
Evaluation of equity theory- weakness:
Equity theory is based on the 'norm of equity' which assumes that every one is equally sensitive to equity & inequity.
Huseman et al (1987) suggested this was not the case & developed the idea of equity & sensitivity.
He identified 3 categories of individuals: Benevolent (giver), equity sensitive, entitled (over-rewarded).
Suggests that there is no 'norm of equity'- as the equity theory suggests & there are individual differences.