公平理論

Equity theory suggests that individuals feel most satisfied when their contributions and benefits are balanced with their partner's. Fairness does not require equal contributions, but rather a proportional relationship between effort and reward. A relationship is considered fair when each partner's benefits match their input, promoting mutual reciprocity and a sense of justice.

Underbenefited partners, who contribute more than they receive, experience frustration and resentment due to the mismatch between effort and reward. Overbenefited partners, who receive more than they contribute, feel guilt, though this discomfort is typically less intense. Research shows people are generally more tolerant of being overbenefited than underbenefited.

The trust-insurance system is an unconscious mechanism through which individuals track contributions and rewards in intimate partnerships. When feeling insecure, partners engage in compensatory behaviors like extra chores. These actions reduce their own feelings of inferiority while making their partner feel more secure the following day, supporting relationship equilibrium.

Individuals who feel unworthy in their relationships make sacrifices such as doing household chores to restore balance. These restorative actions reduce their feelings of inferiority the same day. By the following day, partners who benefit from these gestures express fewer doubts about the relationship, helping maintain connection.

When relationships become inequitable, dissatisfaction and instability often follow. Individuals naturally detect imbalances through their trust-insurance system and experience negative emotions—resentment if underbenefited or guilt if overbenefited. These emotional responses prompt corrective behaviors to restore relational balance and maintain the relationship.

The equilibrium model suggests that individuals strive to preserve meaningful relationships by maintaining balance between contributions and rewards. When satisfaction declines due to inequity, partners engage in corrective behaviors to restore fairness. This ongoing process of detecting imbalances and making adjustments helps sustain healthy, fulfilling relationships over time.

Equity theory reveals the psychological processes behind fairness, reciprocity, and emotional regulation in close relationships. By understanding how individuals evaluate contributions and rewards, we can recognize why imbalances create dissatisfaction and how corrective behaviors restore connection. This framework helps explain both conscious efforts and subtle emotional cues that maintain relationship health.