Media Market Structure and Confirmatory News
研究了媒体市场竞争如何影响确认性偏差，发现竞争在先验信息精确时促进信息性报道，在先验信息模糊时则相反，原因在于消费者多归属或单归属的选择。
ABSTRACT This paper studies the effect of media market competition on confirmatory bias, the tendency to confirm common priors to appear competent, while accounting for both single‐ and multi‐homing. It finds that competition helps sustain informative reporting when priors are relatively precise, but has the opposite effect when priors are diffuse. The reason is that when competing outlets are perceived as similarly competent, consumers optimally multi‐home. This creates strategic complementarity in informative reporting and helps sustain it when the priors are relatively precise. However, when perceived competencies diverge, consumers single‐home with the outlet they view as most competent, creating incentives for confirmatory reporting when the priors are diffuse.