Aversion to health inequality — Pure, income-related and income-caused
通过实验分离出人们对纯粹健康不平等、与收入相关的健康不平等以及由收入引起的健康不平等的厌恶程度，发现中位参与者强烈厌恶纯粹健康不平等，且对与收入相关的不平等厌恶更强，但未因收入导致健康不佳而增强。
We design a novel experiment to identify aversion to pure (univariate) health inequality separately from aversion to income-related and income-caused health inequality. Participants allocate resources to determine health of individuals. Identification comes from random variation in resource productivity and information on income and its causal effect. We gather data (26,286 observations) from a sample of UK adults (n = 337) and estimate pooled and participant-specific social preferences while accounting for noise. The median person has strong aversion to pure health inequality, challenging the health maximisation objective of economic evaluation. Aversion to health inequality is even stronger when it is related to income. However, the median person prioritises health of poorer individuals less than is assumed in the standard measure of income-related health inequality. On average, aversion to that inequality does not become stronger when low income is known to cause ill-health. There is substantial heterogeneity in all three types of inequality aversion.