Suppose you are a government analyst, and you want to help homeless families. To do
so, you have decided to subsidize rental housing for poor families. (A subsidy is a
payment by the government that pays part of the price of a specific product. For
example, the government pays part of the rent payment.) If families had been choosing
rationally before the subsidy, what is most likely to happen as a result of the subsidy?
A. The substitution effect will cause people to consume less rental housing as the price
of housing falls.
B. The income effect will cause people to consume less rental housing, but only if rental
housing is a normal or luxury good.
C. People will consume more housing and more of another good, for example,
groceries.
D. Any rational person will respond by consuming more housing, and no more of the
other goods he or she consumes.
In the above decision tree, Tracy picks first, and Amy picks second. Tracy knows Amy’s
payoffs to each choice, and Amy knows Tracy’s payoffs.
Refer to the figure above. Based solely on the information in this decision tree, we can
predict that:
A. Tracy will always make the decision to give Amy the choice at Y, and Amy will then
choose the lower branch.
B. Amy will make a credible promise to pick the lower branch if given the choice at Y,
and Tracy will make the decision to give Amy the choice at Y.
C. Tracy will always make the decision to give Amy the choice at Z, and Amy will then
choose the upper branch.
D. Tracy will always make the decision to give Amy the choice at Z, and Amy will then
choose the lower branch.