联合指导制对博士培养质量的异质性影响——基于2021年全国博士离校调查数据的实证分析

In the world, the joint supervision system has become an important form of academic guidance for doctoral students. However, empirical analysis comparing the effects of the joint supervision system with the traditional single-supervisor system is still insufficient. Based on the national survey of doctoral graduates in 2021, this study analyzed the impact of the doctoral joint supervision system on academic publication and ability development evaluation through regression analysis, heterogeneity analysis, treatment-effects estimation using lasso, and other research methods. The research finds that the form of PhD supervision is an important factor affecting the quality of doctoral training. Compared with the traditional system, the joint supervision system has played a significant positive role in the research output and ability development of doctoral students. In further analysis of discipline heterogeneity, the results show that the implementation of the joint supervision system has significantly improved