Credence goods markets, online information and repair prices: A natural field experiment
通过电脑维修市场的自然实地实验，发现消费者获取自身需求的模糊信息并告知卖家反而导致更高价格，而查看在线评价则有助于找到价格合理、质量合适的卖家。
Credence goods markets are characterized by large informational asymmetries between consumers and expert sellers. In two waves of a natural field experiment in the market for computer repairs we study whether consumers benefit from accessing online information about their needs or previous consumers’ experience with particular sellers. We find that gaining noisy knowledge about one’s needs and revealing it to the seller is a costly mistake, since seemingly better informed customers pay, on average, higher prices. By contrast, accessing online ratings helps identifying sellers who provide appropriate quality at reasonable prices, in particular on rating platforms that filter out untrustworthy reviews.