5408 Frontiers of Microeconomics
50. A radio story reported a study on the makes and models of cars that were observed going through
intersections in the Washington, D.C. area without stopping at the stop signs. According to the
story, Volvos were heavily overrepresented; the fraction of cars running stop signs that were
Volvos was much greater than the fraction of Volvos in the total population of cars in the D.C.
area. This is initially surprising because Volvo has built a reputation as an especially safe car that
appeals to sensible, safety-conscious drivers. How is this observation best explained?
a. Volvo drivers are not willing to take risks that they would take in another, less safe car. Driving
a Volvo leads to a propensity to run stop signs.
b. Volvo drivers are not willing to take risks that they would take in another, less safe car. Driving
a Volvo reduces the propensity to run stop signs.
c. Volvo drivers are willing to take risks that they would not take in another, less safe car. Driving
a Volvo reduces the propensity to run stop signs.
d. Volvo drivers are willing to take risks that they would not take in another, less safe car. Driving
a Volvo leads to a propensity to run stop signs.
51. Suppose you are covered under health insurance or belong to a Health Maintenance Organization
(HMO), and you are insured against all or most of the costs of visits to the doctor. As a result
you are likely to make greater use of medical services of all kinds. This tendency of people with
insurance to change their behavior in a way that leads to more claims against the insurance
company is called
a. adverse selection.
b. moral hazard.
c. screening
d. signaling.