The efficiency of market-assisted choice: an experimental analysis of mobile phone connection service recommendations
通过实验比较离线浏览与在线使用比较网站等市场机构对手机套餐选择的影响，发现使用市场机构能显著降低费用，且推荐计划的额外成本与使用时间负相关。
Abstract This paper reports an experiment in which participants were allowed an hour to find the cheapest mobile phone plan for a specific usage remit and were given either (a) access to an offline archive of provider websites or (b) access to the Internet. They were required to think aloud, and recordings were made of what they said and what transpired on their computer screens. Access to comparison sites and other market institutions resulted in significantly cheaper plans being selected on average. Within the group of online subjects, excess costs of recommended plans were inversely related to the time spent using market institutions. Although the designs of comparison websites sometimes hampered decision making, outcomes were generally enhanced by the ability to use these online market institutions.