Mr. Jones attended a training suggesting that kids with high self-esteem tended to be less shy, feel less pressured to conform, and persevere when tasks are difficult, so he decided to give his struggling students random rewards and weekly messages to boost self-esteem. Research suggests that the result would be grades and increased .

Which term describes a possible explanation of, or answer to, a scientific question that is based on prior knowledge or research and that is testable?

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.

Does the amount of material present affect its intensive or extensive properties? explain.