{"title":"《机器的崛起:自动化、横向创新和收入不平等","authors":"David Hémous, Morten Olsen","doi":"10.1257/mac.20160164","DOIUrl":null,"url":null,"abstract":"We build an endogenous growth model with automation (the replacement of low-skill workers with machines) and horizontal innovation (the creation of new products). Over time, the share of automation innovations endogenously increases through an increase in low-skill wages, leading to an increase in the skill premium and a decline in the labor share. We calibrate the model to the US economy and show that it quantitatively replicates the paths of the skill premium, the labor share, and labor productivity. Our model offers a new perspective on recent trends in the income distribution by showing that they can be explained endogenously. (JEL D31, E25, J24, J31, O33, O41)","PeriodicalId":47991,"journal":{"name":"American Economic Journal-Macroeconomics","volume":"22 1","pages":""},"PeriodicalIF":6.3000,"publicationDate":"2021-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The Rise of the Machines: Automation, Horizontal Innovation, and Income Inequality\",\"authors\":\"David Hémous, Morten Olsen\",\"doi\":\"10.1257/mac.20160164\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We build an endogenous growth model with automation (the replacement of low-skill workers with machines) and horizontal innovation (the creation of new products). Over time, the share of automation innovations endogenously increases through an increase in low-skill wages, leading to an increase in the skill premium and a decline in the labor share. We calibrate the model to the US economy and show that it quantitatively replicates the paths of the skill premium, the labor share, and labor productivity. Our model offers a new perspective on recent trends in the income distribution by showing that they can be explained endogenously. (JEL D31, E25, J24, J31, O33, O41)\",\"PeriodicalId\":47991,\"journal\":{\"name\":\"American Economic Journal-Macroeconomics\",\"volume\":\"22 1\",\"pages\":\"\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2021-12-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"American Economic Journal-Macroeconomics\",\"FirstCategoryId\":\"96\",\"ListUrlMain\":\"https://doi.org/10.1257/mac.20160164\",\"RegionNum\":1,\"RegionCategory\":\"经济学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ECONOMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"American Economic Journal-Macroeconomics","FirstCategoryId":"96","ListUrlMain":"https://doi.org/10.1257/mac.20160164","RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ECONOMICS","Score":null,"Total":0}
The Rise of the Machines: Automation, Horizontal Innovation, and Income Inequality
We build an endogenous growth model with automation (the replacement of low-skill workers with machines) and horizontal innovation (the creation of new products). Over time, the share of automation innovations endogenously increases through an increase in low-skill wages, leading to an increase in the skill premium and a decline in the labor share. We calibrate the model to the US economy and show that it quantitatively replicates the paths of the skill premium, the labor share, and labor productivity. Our model offers a new perspective on recent trends in the income distribution by showing that they can be explained endogenously. (JEL D31, E25, J24, J31, O33, O41)
期刊介绍：
American Economic Journal: Macroeconomics focuses on studies of aggregate fluctuations and growth, and the role of policy in that context. Such studies often borrow from and interact with research in other fields, such as monetary theory, industrial organization, finance, labor economics, political economy, public finance, international economics, and development economics. To the extent that they make a contribution to macroeconomics, papers in these fields are also welcome.
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