Abstract

http://ssrn.com/abstract=245828
 
 

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Behavioral Economics


Sendhil Mullainathan


Harvard University - Department of Economics; National Bureau of Economic Research (NBER)

Richard H. Thaler


University of Chicago - Booth School of Business; National Bureau of Economic Research (NBER)

September 2000

MIT Dept. of Economics Working Paper No. 00-27

Abstract:     
Behavioral Economics is the combination of psychology and economics that investigates what happens in markets in which some of the agents display human limitations and complications. We begin with a preliminary question about relevance. Does some combination of market forces, learning and evolution render these human qualities irrelevant? No. Because of limits of arbitrage less than perfect agents survive and influence market outcomes. We then discuss three important ways in which humans deviate from the standard economic model. Bounded rationality reflects the limited cognitive abilities that constrain human problem solving. Bounded willpower captures the fact that people sometimes make choices that are not in their long-run interest. Bounded self-interest incorporates the comforting fact that humans are often willing to sacrifice their own interests to help others. We then illustrate how these concepts can be applied in two settings: finance and savings. Financial markets have greater arbitrage opportunities than other markets, so behavioral factors might be thought to be less important here, but we show that even here the limits of arbitrage create anomalies that the psychology of decision making helps explain. Since saving for retirement requires both complex calculations and willpower, behavioral factors are essential elements of any complete descriptive theory.

Number of Pages in PDF File: 13

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Date posted: October 23, 2000  

Suggested Citation

Mullainathan, Sendhil and Thaler, Richard H., Behavioral Economics (September 2000). MIT Dept. of Economics Working Paper No. 00-27. Available at SSRN: http://ssrn.com/abstract=245828 or http://dx.doi.org/10.2139/ssrn.245828

Contact Information

Sendhil Mullainathan (Contact Author)
Harvard University - Department of Economics ( email )
Littauer Center
Cambridge, MA 02138
United States
617-496-2720 (Phone)
617-495-7730 (Fax)
National Bureau of Economic Research (NBER) ( email )
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
617-588-1473 (Phone)
617-876-2742 (Fax)
Richard H. Thaler
University of Chicago - Booth School of Business ( email )
5807 S. Woodlawn Avenue
Chicago, IL 60637
United States
773-702-5208 (Phone)
773-702-0458 (Fax)
National Bureau of Economic Research (NBER)
1050 Massachusetts Avenue
Cambridge, MA 02138
United States
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