The emergence of young children's tolerance for inequality: With age, children stop showing numerically sensitive fairness.

One persistent and pernicious feature of outstanding social inequality is that even relatively extreme forms of inequality can be justified with reference to merit-based considerations. One key feature of fairness with respect to resource allocation is that it is numerically sensitive; greater (more extreme) inequalities are generally seen as less fair than less extreme ones. This work sought to document the emergence of numerically sensitive fairness in children aged 4 to 8 years. A total of 81 4- to 8-year-olds completed a series of within-participants fairness judgment trials in which they observed two characters receive either equitable or inequitable shares of resources-ranging from 50/50 (completely fair) to 0/100 (completely unfair)-in two contexts: one in which the two characters were described as working the same amount (equality context) and one in which one character was described as working harder than the other character (merit context). Children of all ages showed numerically sensitive fairness in the equality context. However, whereas younger children continued to show numerically sensitive fairness in the merit context, older children approved even relatively extreme inequalities when one person was described as working harder. This effect emerged with age, suggesting a double-edged sword to acquiring beliefs in merit-based fairness; as children get older, they may begin to accept even relatively extreme forms of inequality when presented in a merit context. Results are discussed with respect to the acquisition of meritocracy as a normative belief of fairness.