Multivariate choices and identification of social interactions
将社会互动模型扩展到多元选择情境，提出联立方程网络模型，并用美国青少年健康数据发现同伴的屏幕活动会影响学生的学业表现。
Summary This paper considers the identification of social interaction effects in the context of multivariate choices. First, we generalize the theoretical social interaction model to allow individuals to make interdependent choices in different activities. Based on the theoretical model, we propose a simultaneous equation network model and discuss the identification of social interaction effects in the econometric model. We also provide an empirical example to show the empirical salience of this model. Using the Add Health data, we find that a student's academic performance is not only affected by academic performance of his peers but also affected by screen‐related activities of his peers.