According to george herbert mead's stages of development, children first start to learn to recognize an "other" through question 1 options: a. imitation. b. playing informally with other children. c. formal games. d. first recognizing their own identities.

Mankiw attributes – chapter 1 and his 10 principles – differences in living standards within a countryover time and across countries at a moment in time to: a. the presence or absence of inflation and unemployment. b. the allocation of resources between private markets and the public sector. c. those that have dealt successfully with the efficiency v. equality tradeoff and those that haven’t. d. differences in productivity. e. ones that think at the margin and respond to incentives and those that don’t.