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Inequity aversion (IA) is the preference for fairness and resistance to incidental inequalities. The social sciences that study inequity aversion include sociology, economics, psychology, anthropology, and ethology. ==Human studies== Inequity aversion research on humans mostly occurs in the discipline of economics though it is also studied in sociology. Research on inequity aversion began in 1978 when studies suggested that humans are sensitive to inequities in favor of as well as those against them, and that some people attempt overcompensation when they feel "guilty" or unhappy to have received an undeserved reward. A more recent definition of inequity aversion (resistance to inequitable outcomes) was developed in 1999 by Fehr and Schmidt.〔 They postulated that people make decisions so as to minimize inequity in outcomes. Specifically, consider a setting with individuals who receive pecuniary outcomes ''xi''. Then the utility to person ''i'' would be given by : where α parametrizes the distaste of person ''i'' for disadvantageous inequality in the first nonstandard term, and β parametrizes the distaste of person ''i'' for advantageous inequality in the final term. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「inequity aversion」の詳細全文を読む スポンサード リンク
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