Managerial Economics-Charles W. Upton Asymmetric Information.

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Presentation transcript:

Managerial Economics-Charles W. Upton Asymmetric Information

Most economic decisions are made with incomplete information.

Asymmetric Information Most economic decisions are made with incomplete information. It is important to distinguish between uncertain information and asymmetric information

Asymmetric Information Two Examples I sell you a ticket to an outdoor concert next July 4. It may or may not be good weather. –This is uncertain information

Asymmetric Information Two Examples I sell you a ticket to an outdoor concert next July 4. It may or may not be good weather. –This is uncertain information I want to purchase health insurance –This is asymmetric information

Asymmetric Information The Concert Suppose the chance of good weather is

Asymmetric Information The Concert Suppose the chance of good weather is If the weather is good, the ticket will be worth $100; if it is bad, $20. Fair pricing is $60.

Asymmetric Information The Concert Suppose the chance of good weather is If the weather is good, the ticket will be worth $100; if it is bad, $20. Fair pricing is $60. Neither you nor I has any particular insight into the weather

Asymmetric Information The Health Policy Half the population is a good health risk, while the other half is a bad risk. For good risk patients, the right charge is $1,000; for bad risks, $10,000. How should the company price the policy?

Asymmetric Information Pricing the Policy While the company does not know who is a good and bad risk, people have a pretty good idea of their health. –This is asymmetric information.

Asymmetric Information Pricing the Policy While the company does not know who is a good and bad risk, people have a pretty good idea of their health. If the company prices at $5,500, many of the good risks will decline insurance.

Asymmetric Information Pricing the Policy While the company does not know who is a good and bad risk, people have a pretty good idea of their health. If the company prices at $5,500, many of the good risks will decline insurance. In the extreme case, all good risks will decline and the company will be selling policies at $5,500 which cost $10,000 to service.

Asymmetric Information Pricing the Policy While the company does not know who is a good and bad risk, people have a pretty good idea of their health. If the company prices at $5,500, many of the good risks will decline insurance. In the extreme case, all good risks will decline and the company will be selling policies at $5,500 which cost $10,000 to service. This is the classic “lemon” problem

Asymmetric Information Other Cases You want to switch jobs. –You know more about your reasons than potential employers

Asymmetric Information Other Cases You want to switch jobs. –You know more about your reasons than potential employers You want to borrow money –You know financial information not available to banks

Asymmetric Information Used Cars You are thinking about buying a used car. –The seller knows whether it is a lemon or not. –All you know is that he knows more than you.

Asymmetric Information Used Cars You are thinking about buying a used car. –The seller knows whether it is a lemon or not. –All you know is that he knows more than you. You sell a used car which is not a lemon. –Potential buyers understand the issue. –Your assurances that the car is good will not be taken at face value.

Asymmetric Information Used Cars You are thinking about buying a used car. –The seller knows whether it is a lemon or not. –All you know is that he knows more than you. You sell a used car which is not a lemon. –Potential buyers understand the issue. –Your assurances that the car is good will not be taken at face value. We will develop a model in the next lecture

Asymmetric Information End ©2004 Charles W. Upton