When the Effects of Informational Interventions Are Driven by Salience—Evidence from School Parents in Brazil
American Economic Journal: Economic Policy · 2026 · Guilherme Lichand、Nina Cunha、Ricardo Madeira、Eric Bettinger
中文摘要
信息干预之所以有效，是仅仅因为它促使受试者朝正确方向更新信念，还是在很大程度上因为它提高了其所针对决策的显著性？我们将家长随机分配至信息组或显著性组：信息组每周通过短信接收其子女出勤情况和在校努力程度的数据，显著性组接收旨在重新引导其注意力、但不含子女特定信息的短信。与对照组相比，信息干预对出勤率、考试成绩和升年级均有较大影响，而显著性组各项结果的改善程度至少与之相当。(JEL C93, D83, D91, I21, J13, O12)
Abstract
Do informational interventions work because they lead subjects to merely update beliefs in the right direction or, to a large extent, because they increase the salience of the decision they target? We randomly assign parents to either an information group that receives text messages with weekly data on their child's attendance and school effort or a salience group that receives messages that try to redirect their attention without child-specific information. While information has large impacts on attendance, test scores, and grade promotion relative to the control group, outcomes in the salience group improve by at least as much. (JEL C93, D83, D91, I21, J13, O12)