{"title":"搜索市场中的偏见","authors":"Tobias Gamp, Daniel Krähmer","doi":"10.1257/mic.20210007","DOIUrl":null,"url":null,"abstract":"We study the implications of biased consumer beliefs for search market outcomes in the seminal framework due to Diamond (1971). Biased consumers base their search strategy on a belief function that specifies for any (true) distribution of utility offers in the market a possibly incorrect distribution of utility offers. If biased consumers overestimate the best offer in the market, a novel type of equilibrium may emerge in which firms make exceptionally favorable offers in order to meet biased consumers’ unreasonably high expectations, which then become partially self-fulfilling. Consequently, the presence of biased consumers may improve the welfare of all consumers. (JEL D11, D21, D83, D84)","PeriodicalId":47467,"journal":{"name":"American Economic Journal-Microeconomics","volume":" ","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Biased Beliefs in Search Markets\",\"authors\":\"Tobias Gamp, Daniel Krähmer\",\"doi\":\"10.1257/mic.20210007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We study the implications of biased consumer beliefs for search market outcomes in the seminal framework due to Diamond (1971). Biased consumers base their search strategy on a belief function that specifies for any (true) distribution of utility offers in the market a possibly incorrect distribution of utility offers. If biased consumers overestimate the best offer in the market, a novel type of equilibrium may emerge in which firms make exceptionally favorable offers in order to meet biased consumers’ unreasonably high expectations, which then become partially self-fulfilling. Consequently, the presence of biased consumers may improve the welfare of all consumers. (JEL D11, D21, D83, D84)\",\"PeriodicalId\":47467,\"journal\":{\"name\":\"American Economic Journal-Microeconomics\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2023-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"American Economic Journal-Microeconomics\",\"FirstCategoryId\":\"96\",\"ListUrlMain\":\"https://doi.org/10.1257/mic.20210007\",\"RegionNum\":2,\"RegionCategory\":\"经济学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ECONOMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Economic Journal-Microeconomics","FirstCategoryId":"96","ListUrlMain":"https://doi.org/10.1257/mic.20210007","RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECONOMICS","Score":null,"Total":0}
We study the implications of biased consumer beliefs for search market outcomes in the seminal framework due to Diamond (1971). Biased consumers base their search strategy on a belief function that specifies for any (true) distribution of utility offers in the market a possibly incorrect distribution of utility offers. If biased consumers overestimate the best offer in the market, a novel type of equilibrium may emerge in which firms make exceptionally favorable offers in order to meet biased consumers’ unreasonably high expectations, which then become partially self-fulfilling. Consequently, the presence of biased consumers may improve the welfare of all consumers. (JEL D11, D21, D83, D84)