Learning from Others' HIV Testing: Updating Beliefs and Responding to Risk
利用马拉维农村的随机激励实验，研究发现当社区中他人获知HIV检测结果后，个体对HIV/AIDS致死率的信念会下调，并伴随安全套使用减少，但未增加多伴侣行为。
An individual who takes an HIV test can be informed about their own status and risk. Similarly, when friends, family or neighbors learn of a person's HIV status, they may update their beliefs about HIV infection among people they know. Using an experiment conducted in rural Malawi which randomly assigned incentives to learn HIV results, we find that as people in the community learn their HIV results, individuals revise their beliefs downward about deaths attributable to HIV/AIDS. We find corresponding behavioral responses with a significant decrease in condom use and no significant increase in multiple partnerships among those who are HIV-negative.