【開催報告】グローバル経済史研究部会（6月23日）/ Global Economic History Seminar on June 23rd

講演者

氏名：村上愛

所属：東京大学

資格：講師

経歴：こちらからご確認ください

開催概要

開催日時：　2026年6月23日（火）15時05分－16時45分
開催方法：　早稲田大学早稲田キャンパス3号館4階401教室およびオンライン（Zoom） 

講演報告

講演タイトル：Supply and Demand of Medical Knowledge

講演概要：
This paper studies two millennia of medical history and its stagnant development compared to other natural sciences, using a signaling game. Upon observing signals, two physicians (or the senders) choose either old or new technologies. Then, a unit mass of patients (or the receivers) select one of the two physicians. Depending on parameters, there are three types of pure strategy equilibria, corresponding to the three stages in the evolution of medical technology. Our results identify three contributing factors to the stagnant development of medicine: bias in patients’ beliefs toward the old method, the limited accuracy of physicians’ signals, and intense competition. In particular, intense competition is detrimental to the dissemination of medical knowledge because the physicians tend to stick to the old technology to attract biased patients.