News and Aggregate Demand Shocks
综述了新闻冲击如何影响总需求，探讨不同偏好、技术、刚性和信息结构下的传导机制，对研究经济波动的学者有参考价值。
In this review, I look at the recent literature on news as a source of economic fluctuations. The main question in this literature is: how does the aggregate economy respond to a shock that raises consumers' and firms' expectations about future productivity growth? I discuss how different papers have addressed this question, emphasizing the mechanisms at work under different specifications of preferences and technology, under different assumptions about nominal and real rigidities, and under different assumptions about the agents' information structure. I also briefly discuss some challenges faced by the empirical literature on the topic.