【摘要】 本文基于2014—2019年中国商业银行手机App用户行为使用数据，研究发现，手机银行App活跃人数的增长能够显著降低商业银行的信贷风险。在考虑工具变量和采用滞后一期处理潜在的内生性后，上述结果依然稳健。进一步研究发现，手机银行是通过替代效应和信息效应作用于信贷风险。替代效应体现为手机银行作为在线技术弥补银行物理网点收缩带来的效率损失，信息效应表现为手机银行通过增加信息供给缓解银行与客户间的信息不对称，从而降低银行的信贷风险。异质性分析表明，手机银行App的应用对商业银行信贷风险的抑制作用在规模较小、国有银行、线上依赖度较高的样本中更为明显。更多还原

【Abstract】 Using the data on behaviors of the users of Chinese commercial banks’ mobile Apps from 2014 to 2019,this paper finds that the credit risk of a commercial bank decreases as the number of active users of mobile banking apps increases. Our findings are robust to a group of robustness checks including the use of instrumental variables and oneyear lagged proxies to address potential endogeneity concerns. Further analysis shows that mobile banking Apps affect credit risk through substitution and information effects. The substitution effect indicates that the popularization of mobile banking Apps compensates for the efficiency loss resulting from the banks’ physical branch closure. The information effect is manifested in mobile banking apps reducing the information asymmetry between banks and their customers by increasing the supply of information,and thus lowering credit risk.Cross-section tests show that mobile banking Apps’ effect on reducing commercial banks’ credit risk is more pronounced for small banks,state-owned banks,and banks heavily relying on online services.更多还原