Testing for Choice Dynamics in Panel Data
面板数据中选择动态的检验AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究消费者品牌选择,并利用含滞后变量的面板模型区分选择动态的来源,因此归入离散选择与面板数据。
面板数据中选择动态的检验AI 解读 ↓
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This article applies different approaches to distinguish state dependence from unobserved heterogeneity and serial correlation and, hence, test for state dependence in consumer brand choices. First, we apply a simple method proposed by Chamberlain, which involves lagged exogenous variables only. Second, we also estimate a lagged-dependent-variable specification proposed by Wooldridge. Third, we use the estimation approach suggested by Wooldridge to estimate a model with both lagged dependent and exogenous variables to distinguish between the two different sources of choice dynamics, state dependence and lagged effects of the exogenous variables. Our analysis reveals that the best approach is to use models with both lagged dependent and exogenous variables. Our findings include strong evidence for state dependence in five out of the six product categories studied in this article.