Price Dispersion in the Lab and on the Internet: Theory and Evidence
发现，即使市场接近教科书式的伯特兰竞争，价格离散也普遍存在，而卖家的有限理性足以解释这一现象。基于实验室实验和互联网比价网站数据的检验支持该理论。
Price dispersion is ubiquitous in settings that closely approximate textbook Bertrand competition. We show that only a little bounded rationality among sellers is needed to rationalize such dispersion. A variety of statistical tests, based on datasets from two independent laboratory experiments and structural estimates of the parameters of our models, suggest that bounded-rationality-based theories of price dispersion organize the data remarkably well. Evidence is also presented to suggest that the models are consistent with data from a leading Internet price comparison site.