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谁从公共服务中获益? 新证据及其对不平等测度的启示

Who benefits from public services? Novel evidence and implications for inequality measurement
Journal of Development Economics · 2025 · [{"name": "Amory Gethin", "affiliation": ["World Bank Group"]}]

中文摘要

传统的不平等统计指标关注可支配收入,忽视了家庭对公共服务的消费。本文结合预算数据与丰富的微观数据,在后种族隔离时代的南非背景下,提供了关于公共品分配归宿的新证据。通过公共服务实现的再分配规模巨大,且已显著增长。最贫困的50%人口消费了60%的公共教育、50%的医疗保健、40%的警察和地方政府服务,以及仅7%的交通基础设施。最贫困的50%人口获得的实物转移支付是现金转移支付的三倍,可解释该群体自1993年以来实际收入增长的一半。这些结果对近期关于与宏观经济增长一致的不平等衡量指标的争论具有重要意义:现有方法低估了再分配增长幅度的60%。

Abstract

Traditional inequality statistics focus on disposable income, ignoring households’ consumption of public services. This article provides novel evidence on the distributional incidence of public goods, combining budget data with rich microdata in the context of post-apartheid South Africa. Redistribution through public services is large and has considerably grown. The poorest 50% consume 60% of public education, 50% of healthcare, 40% of police and local government services, and only 7% of transport infrastructure. In-kind transfers received by the poorest 50% are three times larger than cash transfers and can account for half of real income growth among this group since 1993. These results have major implications for recent debates on inequality measures consistent with macroeconomic growth: existing methods underestimate the rise of redistribution by 60%.
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