What can we learn from the changes in the income of the median American household over the last 40 years?

When a male employer pays female employee a lower wage (compared with her make counterpart employee) because she may be going on maternity leave sometime in the future, it is a ________.

What is the empirical relationship between income inequality and social mobility across countries? (the answer in the lecture-notes’ slides)

What causes the main local differences in social mobility?

What is the “American dream” as measured by Prof. Raj Chetty?

What generates the difference between pre-tax and post-tax income inequality?

What is the relationship between economic inequalities and economic growth and development?

Which of the following statement is true regarding social mobility of African-Americans’ in the U.S.?

Water has the ability to resist changes in temperature.  Explain why this property of water is important for living things.

Which of the following is an example of an everyday (nonscientific) theory?