促进一种健康行为是否会妨碍其他健康行为？来自一项田野实验的证据
Does Promoting One Healthy Behavior Detract from Others? Evidence from a Field Experiment
American Economic Journal: Applied Economics · 2024 · [{"name": "Hannah Trachtman", "affiliation": ["Hebrew University of Jerusalem"]}]
中文摘要
行为干预的影响评估通常聚焦于目标结果。干预是否可能对其他行为产生负面溢出效应？我开展了一项大规模田野实验，向参与者提供旨在促进冥想和膳食记录这两种健康行为的不同信息与激励组合。我发现，这些干预使另一种行为的完成率降低了19%–29%。我还发现，对目标行为影响更大的干预未必会产生更大的负面溢出效应，并说明了这一发现对成本效益分析的启示。我进一步探究了所观察到的溢出效应背后的机制。(JEL C93, D62, D91, I12)
Abstract
Impact evaluations of behavioral interventions typically focus on target outcomes. Might interventions induce negative spillovers on other behaviors? I run a large field experiment in which individuals receive combinations of messages and incentives promoting two healthy behaviors, meditation and meal logging. I find that the interventions reduce completion rates of the opposite behavior by 19–29 percent. I find that interventions with larger target effects do not necessarily generate larger negative spillovers, and demonstrate implications for cost-effectiveness analysis. I investigate the mechanisms behind the observed spillovers. (JEL C93, D62, D91, I12)