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营养支持对行为结果与劳动生产率的影响

The effects of nutrition support on behavioral outcomes and labor productivity
Journal of Development Economics · 2026 · Seollee Park、Hyuncheol Bryant Kim

中文摘要

尽管世界上许多贫困人口摄入的热量不足且营养价值偏低,但关于这可能如何塑造其行为与生产率的研究仍十分有限。本研究以埃塞俄比亚一家花卉种植厂为背景,运用实验室—田野实验与田野实验,考察一项营养支持项目对行为结果——压力、亲社会性、合作与注意力——以及生产率的影响。我们发现,营养支持缓解了压力并降低了亲社会性,呈现出随时间推移的享乐适应模式。我们未发现劳动生产率得到改善的证据。

Abstract

While many of the world’s poor consume inadequate calories with low nutritional value, there has been little work on how this may shape their behaviors and productivity. Using lab-in-the-field and field experiments in the context of a floriculture plant in Ethiopia, this study investigates the effects of a nutrition support program on behavioral outcomes—stress, prosociality, cooperation, and attention—and productivity. We find that nutrition support relieves stress and decreases prosociality, exhibiting a pattern of hedonic adaptation over time. We do not find evidence for improvements in labor productivity.
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