“北航经商院 • 经济学双周论坛”将在本周五迎来第25期讨论，具体安排如下：
Title：The Cross-Border Spillover Effects of Recreational Marijuana Legalization
Presenter: Zhuang Hao
本文研究了科罗拉多州和华盛顿州娱乐性大麻合法化（Recreational Marijuana Legalization, RML）对临州的溢出效应。本文发现科州和华州RML导致了临州接壤郡因非法持有大麻被逮捕率相较于非接壤郡急剧上升。对比成年人和青少年的逮捕率，RML对青少年无影响，其效果完全作用于成年人。逮捕率上升的原因呈现了混合性。运用自报告大麻使用数据，本文发现相较于非接壤州，大麻使用率在RML接壤州上升（暗示大麻持有和消费带来逮捕率上升）。然而，另一方面，大麻持有逮捕率的上升高度集中于少数州。这个证据与执法力度的变化更加一致。
We examine the spillover effects of recreational marijuana legalization (RML) in Colorado and Washington on neighboring states. We find that RML causes a sharp increase in marijuana possession arrests in border counties of neighboring states relative to non-border counties in these states. RML has no impact on juvenile marijuana possession arrests but is rather fully concentrated among adults. We find mixed results regarding the source(s) of this change. Using separate data on self-reported marijuana use, we show that RML is accompanied by an increase in use in neighboring states relative to non-neighboring states. However, the increase in arrests following RML is highly concentrated in a few states, which we argue is more consistent with a change in police enforcement near some state borders driving the arrest results.
郝壮，365体育官网经济管理学院经济学助理教授。华盛顿州立大学（Washington State University）经济学博士学位。研究兴趣为应用微观经济学及健康经济学。
Zhuang Hao, Assistant Professor in Economics at School of Economics and Management, Beihang University. He obtained his PhD degree in Economics at Washington State University. His research interests include applied microeconomics and health economics.