北大经院工作坊第815场
Why Do Peer Effects Matter on Student Outcomes? Evidence from a Seat Randomization Experiment in China
行为和实验经济学工作坊
主讲人：Simon Fan 范承泽（香港岭南大学经济学系教授）
主持老师：（北大经院）陆方文
参与老师：
（北大经院）平新乔、秦雪征、庄晨、曹光宇
（北大光华）孟涓涓、高彧
（北大现代农学院）刘承芳、罗仁福、候玲玲、王悦
（北大教育学院）杨钋、丁延庆、马莉萍、朱琼
时间：2024年3月5日（周二）10:00-11:30
地点：北京大学经济学院302会议室
主讲人简介：
范承泽，香港岭南大学的经济学系教授，自1994年在布朗大学获得博士学位以来一直在该校任教。他出版了三本社会经济学领域的学术著作，分别是Vanity economics: An economic exploration of sex, marriage and family（Edward Elgar Publishing, 2014）、Culture, institution, and development in China: the economics of national character（Routledge, 2016）以及The socioeconomics of nationalism in China: historical and contemporary perspectives（Taylor & Francis, 2022）。范教授还在多个国际期刊上发表了约五十篇论文，其中包括International Economic Review、Journal of Development Economics、Journal of Economic Behavior and Organization、Journal of Public Economics以及Review of Economics and Statistics等。
摘要：
Peer effects on student outcomes are a crucial topic, but the reasons behind their significance remain unclear. While it is commonly believed that classmates aid each other, leading to better test scores, an alternative perspective suggests that lower-performing schools may have more disruptive behavior, resulting in negative peer effects. To address this, a seat randomization experiment was conducted in rural China, overcoming selection and reflection problems that hinder peer effect identification. The analysis indicates limited and inconclusive evidence of misbehaviors among peers significantly affecting test scores, likely due to strict disciplinary measures in Chinese middle schools. Additionally, controlling various measures of student behavior, the study finds that ability peer effect, measured by deskmates' test scores, have a notable impact on Chinese test scores but not in Mathematics. This suggests that classmates may not teach mathematical problem-solving skills and lack ability spillover in this subject. In the examined Chinese schools, the main mechanism for the "ability peer effect" appears to be interpersonal comparisons. When a deskmate performs well academically, it motivates the student to study harder, resulting in improved Chinese test scores, where effort matters more than ability or problem-solving skills.
北京大学金融工程实验室
“金工首席谈量化”专题讲座第18讲
量化研究如何赋能主动权益？
主讲人：魏建榕（开源证券研究所副所长、金融工程首席分析师）
主持老师：（北大经院）黎新平
时间：2024年3月5日（周二）19:00-21:30
地点：北京大学经济学院107会议室
主要内容：
讨论如何通过前沿量化技术及另类数据赋能主动权益投资，讨论内容包括公募主动权益基金持仓的实时监测、跑赢偏股混合型基金指数的模型构建，通过另类数据应用监测高频股东户数与筹码博弈、分析师研报Alpha挖掘以及人工智能技术量化前沿中的应用等。
主讲人简介：
魏建榕，开源证券研究所副所长、金融工程首席分析师、金融产品研究中心负责人，复旦大学理论物理学博士，浙江大学金融硕士校外导师、复旦大学金融专硕校外导师。专注量化投资研究10余年，在实证行为金融学、市场微观结构等研究领域取得了多项原创性成果，在国际学术期刊发表论文7篇。系列代表研报《开源量化评论》、《市场微观结构》、《开源基金研究》。团队公众号：建榕量化研究。
注：现场赠送开源证券最新一期《量化沉思录第6卷》，包含十多位量化基金经理最新访谈发言实录。数量有限，先到先得。
北大经院工作坊第816场
Effectiveness of Population-Based Hypertension Screening: A Multidimensional Regression Discontinuity Design
“经院-全健院”
健康与劳动经济学工作坊
主讲人：Fabrice Kämpfen（都柏林大学经济学院助理教授）
主持人：（北大经院）Kevin Devereux
参与老师：
（北大经院）秦雪征、石菊、姚奕、王耀璟、袁野、梁远宁、庄晨
（北大全健院）刘国恩、黄成、孙宇、潘聿航、吕蓓妮、林淑君、林昊翔、蒋少翔、杨佳楠
时间：2024年3月6日（周三）16:00-17:00
地点：北京大学科技园A座403室
主讲人简介：
Fabrice Kämpfen is a broadly trained health economist with research interests focused on innovative topics in health economics, population health and aging. An important innovation of his research has been the expansion of aging research beyond well-studied high-income countries, with a novel focus on low-and middle-income contexts. His findings have been published in various top-field academic journals and advertised in major news outlets, including the New York Times and the Hindu. Fabrice is currently a lecturer at the School of Economics in UCD
摘要：
Population-based screening for risk factors can prevent disease if people respond to information that is accurate and there is sufficient healthcare capacity to meet the resulting demand for diagnosis and preventive treatment. Using longitudinal data on individuals aged 40+ in rural South Africa and a multidimensional regression discontinuity design, we estimate effects of clinical referral based on blood pressure (BP) above diagnostic thresholds for hypertension. Referral increases reported hypertension treatment but has no effect on BP after four years, on average. For screens that are less likely to give a false positive result---based on the time of day and air temperature at which BP was measured---we estimate that referral reduces mean systolic BP by 5 mm Hg (3.6%) and raises the probability of achieving BP control by 22 percentage points (44%). These results suggest that, in rural South Africa, population screening for hypertension at conventional diagnostic thresholds may not be effective without parallel efforts to increase the behavioral response to risk information, improve hypertension treatment and lower the rate of false positives.
供稿：科研与博士后办公室
美编：禾轩
责编：度量、雨禾、雨田
