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AQA A-Level Psychology Notes

9.2.2 Equity theory

AQA Syllabus focus:

'Theories of romantic relationships, including equity theory.'

Equity theory explains relationship satisfaction in terms of fairness. It argues that people feel most content when both partners’ contributions and outcomes are balanced, and distress develops when one person is consistently advantaged or disadvantaged.

What Equity Theory Proposes

Equity theory was developed by Walster and colleagues. It suggests that people do not simply want the greatest possible rewards from a relationship. Instead, they want fairness between what they put in and what they get out. Satisfaction is therefore highest when both partners believe the relationship is just.

Equity theory: A theory of romantic relationships proposing that partners are most satisfied when the relationship is fair, so that each person’s rewards are roughly proportional to their costs and contributions.

In romantic relationships, rewards may include companionship, emotional support, affection, status, or practical help. Costs may include time, effort, conflict, compromise, or emotional strain. Partners also make contributions, such as loyalty, money, housework, or childcare. According to the theory, people compare their own balance of contributions and outcomes with their partner’s balance.

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This diagram illustrates the central comparison in equity theory: each partner informally evaluates their own outcomes relative to their inputs, then compares that ratio to their partner’s. Perceived fairness is highest when the two ratios are judged to be similar; perceived inequity arises when they differ. Source

Fairness is not the same as equality

Equity does not mean that each person must contribute exactly the same amount. A relationship can still be equitable if both partners feel the division is fair overall. For example, one partner may contribute more money while the other contributes more emotional support or household effort. The key issue is perceived fairness, not identical roles.

How Inequity Creates Distress

When one partner believes the relationship is unfair, inequity occurs. Equity theory predicts that this creates psychological discomfort, called distress, because the balance between partners feels wrong.

If a person is under-benefited, they feel they are giving more than they receive. This often produces resentment, anger, and dissatisfaction. If a person is over-benefited, they receive more than they give. This can also create discomfort, often in the form of guilt, although research suggests under-benefiting usually causes stronger negative feelings.

The theory therefore predicts:

  • Equitable relationships are the most satisfying and stable.

  • Under-benefited partners are the least satisfied.

  • Over-benefited partners may still feel uneasy if the imbalance is obvious.

  • The greater the inequity, the greater the likely distress.

Restoring Equity

People are motivated to reduce the discomfort caused by inequity. Equity theory suggests several ways this may happen.

Behavioral changes

A partner may try to change the actual balance in the relationship by:

  • increasing what they contribute

  • asking for more rewards or support

  • reducing their own effort

  • encouraging the other partner to contribute more

Cognitive changes

Sometimes people restore equity psychologically rather than behaviorally. They may re-evaluate the relationship and convince themselves that the situation is fairer than it first appeared. For example, a person might decide that their partner’s emotional support makes up for doing less practical work.

Leaving the relationship

If inequity is severe and lasts for a long time, the relationship may become too uncomfortable to maintain. In that case, one or both partners may decide to end it.

Research Support

A strength of equity theory is that there is empirical support for the link between fairness and satisfaction.

Research on married couples has found that people who see their relationship as equitable usually report being happier than those who see themselves as under-benefited.

Utne et al. studied recently married couples and found that partners who felt either equitable or over-benefited were more satisfied than those who felt under-benefited. This partly supports the theory by showing that feeling disadvantaged is especially associated with dissatisfaction, though over-benefiting may be less disturbing than the theory suggests.

Research has also suggested that equity becomes especially important as relationships develop. In longer-term relationships, people often expect fairness in the overall pattern of give-and-take, even if short periods of imbalance are tolerated. This gives the theory some value in explaining why some relationships remain satisfying over time while others decline.

Evaluation

Strength: useful explanation of maintenance

Equity theory helps explain how romantic relationships are maintained. It shows that satisfaction depends not only on rewards and costs, but also on whether partners judge the exchange to be fair. This is helpful because many people stay unhappy in relationships that appear rewarding from the outside if they feel they are treated unfairly.

The theory also has practical value. It suggests that improving a relationship may involve negotiating a fairer balance of effort, affection, decision-making, or responsibilities rather than simply increasing rewards.

Limitation: fairness is subjective

A major limitation is that equity is difficult to measure objectively. Different partners may disagree strongly about what counts as a contribution or a reward. One person may value money most, while another values time, loyalty, or emotional care. Because judgments of fairness are subjective, it can be hard to test the theory precisely.

Limitation: inequity may be tolerated

Another limitation is that inequity does not always lead to immediate dissatisfaction. Some people accept imbalances because of commitment, love, cultural expectations, or the belief that the balance will improve later. For example, one partner may contribute much more during a stressful period without seeing the relationship as unfair overall. This means the theory can oversimplify real relationships if it assumes people always react negatively to imbalance.

Limitation: cultural variation

The importance of equity may vary across cultures and social groups. In some settings, maintaining harmony or fulfilling family roles may matter more than strict fairness between partners. This suggests the theory may be more applicable to individualistic cultures, where personal satisfaction and equal exchange are emphasized.

Practice Questions

Outline one prediction made by equity theory about romantic relationships. (2 marks)

  • 1 mark for identifying that relationships are most satisfying when they are fair or equitable.

  • 1 mark for a linked development, such as inequity causing distress, under-benefited partners being least satisfied, or partners trying to restore fairness.

Discuss equity theory as an explanation of romantic relationships. (6 marks)

AO1: Up to 3 marks for knowledge and understanding

  • Equity theory says satisfaction depends on fairness, not just rewards.

  • Partners compare their own costs, rewards, and contributions with those of their partner.

  • Inequity produces distress; under-benefiting and over-benefiting may motivate attempts to restore fairness or may damage the relationship.

AO3: Up to 3 marks for evaluation

  • Research support: studies such as Utne et al. found a link between perceived equity and relationship satisfaction.

  • Practical value: the theory can be used to improve relationships by focusing on fairer sharing of responsibilities and rewards.

  • Limitation: fairness is subjective and may differ across individuals, cultures, or stages of a relationship.

FAQ

Most studies use self-report questionnaires. Partners are asked how much they give, how much they receive, and how fair they think the relationship is.

Researchers may also use:

  • rating scales for satisfaction and fairness

  • diary methods to track daily exchanges

  • reports from both partners to compare perceptions

A difficulty is that people do not always judge the same behaviors in the same way, so measures of equity can be influenced by personal values.

People often judge fairness over the long term, not day by day.

Temporary inequity may be accepted when:

  • one partner is sick, stressed, or unemployed

  • both partners expect the imbalance to change later

  • trust is high, so repayment is assumed rather than demanded

This means a short-term unequal period may not be seen as unfair if both partners believe the overall relationship remains balanced.

The hardest contributions to compare are usually less visible ones.

Examples include:

  • emotional support

  • planning and organizing family life

  • remembering important events

  • calming conflict

  • making sacrifices that are not publicly noticed

These forms of effort are sometimes called “hidden” contributions. They can create disagreements because one partner may feel they are giving a lot, while the other mainly notices more obvious contributions such as money or chores.

Yes. People differ in how sensitive they are to fairness.

For example:

  • someone with high entitlement may react strongly to receiving less than they expect

  • someone who avoids conflict may tolerate unfairness longer

  • low self-esteem may make a person less likely to challenge under-benefiting

  • highly anxious people may see small imbalances as more threatening

This helps explain why the same relationship pattern can feel acceptable to one person but very unfair to another.

Feeling over-benefited does not always create strong guilt. In many cases, receiving extra rewards can still feel pleasant, especially if the person believes they deserve them or expects to give back later.

Other reasons include:

  • the imbalance is not obvious to them

  • social norms make receiving care seem normal

  • they justify the imbalance in their own mind

  • resentment is usually stronger than guilt, so under-benefiting has the larger emotional effect

This is one reason findings about over-benefiting are sometimes mixed.

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