The dynamics of cohort effect in politics
构建了一个动态社会学习模型，研究队列效应如何通过代际政治经验传递，导致极化与凝聚的周期性循环，并利用ANES调查数据提供初步证据。
This paper investigates the dynamic ramifications of cohort effects on politics. We propose a theoretical framework that encompasses a dynamic social-learning model of politics, where cohort effects are endogenously derived from preceding generations’ political decisions. This process underscores the role of political experiences in shaping the beliefs of younger cohorts, which subsequently influence policy decisions as these individuals mature. We demonstrate how these dynamic intergenerational linkages lead to cyclical patterns of polarised and cohesive cohorts. In the proposed model, cohorts emerging during periods of political consensus display less familiarity with optimal policies, resulting, due to random external shocks, in high variance of public opinions. Conversely, cohorts maturing amidst polarisation and political turnover demonstrate greater knowledge about optimal policies, leading to more cohesive public opinions. Notably, our model suggests that transitory shocks can exert persistent influence on politics due to these dynamic linkages. We also present some suggestive evidence, using ANES surveys, showing that different cohorts’ opinions exhibit distinct levels of variance.