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一、时间：6月16日（周二）下午14：00

二、地点：十大菠菜网站 502室

三、主讲人：张星玥

四、主题：When Moderation Spills Over: The Double-Edged Effects on User-Generated Content

五、讲座简介：

Social media moderation encompasses platform actions intended to enforce community norms and mitigate harmful behaviors online. While prior research has primarily focused on the direct effects of moderation on moderated content and its creators, limited attention has been paid to the potential spillover effects of moderation on unmoderated content. In this study, we exploit a temporary shutdown of the commenting function on a large social Q&A platform, during which the platform conducted opaque comment moderation, to investigate the spillover effects of comment moderation on subsequent answer generation. Using a differences-in-differences approach combined with propensity score matching, we find that comment moderation significantly decreases the volume of subsequent answers, particularly regular answers rather than harmful answers. Meanwhile, moderation surprisingly improves the helpfulness of subsequent answers. Mechanism analyses reveal that these effects are more pronounced for opinion-oriented and highly popular questions than for professional-oriented and niche questions. Further analyses show that moderation leads to longer, more concrete, and more similar answers. We interpret these findings through the lenses of chilling effects and loss aversion among content contributors on the supply side. On the demand side, moderation reduces users’ incentives to consume platform content, which in turn dampens subsequent answer generation. Our findings suggest that well-intended moderation may unintentionally suppress user participation and content contribution yet improve the helpfulness of user-generated content, highlighting important trade-offs in platform governance and content moderation practices.

六、主讲人简介

张星玥（Luna Zhang）博士的研究方向包括消费者行为、移动商务、平台经济、收益共享、商业分析、大规模数据分析，以及信息系统与运营管理交叉领域。她目前的研究项目聚焦于移动商务场景下的消费者搜索与购买行为，以及平台经济中的收益共享机制。其研究成果已发表于Management Science, Production and Operations Management, Information & Management等国际顶尖学术期刊。

她曾斩获2021年信息系统与技术国际会议（CIST）最佳论文奖，先后获得华盛顿大学塔科马分校2023年度杰出研究奖、2020年度学生票选杰出教师奖。作为指导老师，她带领校数据分析创新学生社团，拿下2020年国际运筹学与管理科学学会（INFORMS）学生分会年度荣誉奖（优等）。西雅图王者女子足球俱乐部（OL王者队）联合星巴克将她评为俱乐部传奇人物。

张博士此前曾在理海大学讲授《信息系统导论》《需求与供应链规划》以及《货币、银行与金融市场》等课程。目前，她为本科生、商业分析理学硕士（MSBA）及工商管理硕士（MBA）项目，开设多门数据分析与运营管理相关课程。

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