b. A new firm closes because a recession causes sales to drop too low.
c. A worker leaves her job to stay at home with her children.
d. After the iPhone was developed, several competitors entered to earn a profit.
e. Consumers demand more high-definition TVs, so the price of other types of
TVs decreases.
According to the human-capital investment framework,
a. higher ability workers choose to invest more in human capital.
b. education increases productivity, which increases wages.
c. education does not affect productivity.
d. education affects wages by indicating a worker has more innate abilities.
e. workers who choose to attend college are not maximizing their expected lifetime
earnings.
The ratios of full-time earnings of Black men and women relative to White men have
increased sharply over the past _______years. Some economists have suggested that
this improvement stems from, among other reasons, _______.