This study examines the effect of an increase in product quality information to consumers on firms' choices of product quality. In 1998, Los Angeles County introduced hygiene quality grade cards to be displayed in restaurant windows. We show that the grade cards cause (i) restaurant health...

Wine consumers have mainly relied upon prices and professional critics’ reviews to infer wine quality. Crowdsourcing platforms, such as Vivino, have introduced a new source of information, leveraging the opinions from large numbers of amateur wine reviewers and averaging their ratings. We...