主題｜Topic：Breaking Drug Trafficking Chains: The Real Name Mailing Regulation and the Decline of Drug Use
時間｜Time：09.07（周四）16: 00-17: 30
地點｜Venue：文澴樓711教室｜Class Room 711，WENHUAN
主講｜Speaker
梁平漢，中山大學政治與公共管理學院教授、博士生導師，中山大學“逸仙學者”，牛津大學“太古”高級訪問學者。《産業經濟評論》執行副主編，中國數量經濟學會理事，中國運籌學會博弈論分會理事。主要研究地方政府行為、行為與實驗經濟學、博弈論、政商關系等。在 Economic Journal, Games and Economic Behavior，《經濟研究》、《管理世界》、《經濟學（季刊）》等國内外一流期刊發表論文數十篇，主持國家社科基金、國家自科基金資助項目多項，研究成果被《新華文摘》和人大複印報刊資料全文轉載多次，獲霍英東基金會優秀青年教師獎，教育部、四川省、重慶市等部省級獎勵多項。
摘要｜Abstract
Postal service has become an important channel for drug trafficking worldwide. This paper examines the impact of the real-name mailing regulation on drug use in a Chinese province. Based on the universe of drug arrest, the difference-in-differences analysis shows that after the implementation of this regulation, on average, a town with 10 percent more courier services penetration exhibits a 0.78 percent reduction in drug arrest. This effect persists for at least a year. We exploit the early development of the courier service industry and use the early mulberry tree planting status as the Instrumental Variable for the courier service penetration today. We find no evidence that police activities change or drug users substitute alternative substances. Further analysis shows that the number of new drug users diminishes, while the number of addicted users remains. We suggest that this regulation on courier service companies is likely to be a cost-effective method to decrease the supply of drugs.
