In "Are Emily and Greg More Employable than Lakisha and Jamal? A Field Experiment on Labor Market Discrimination," researchers sent out identical resume with the exception of one thing that they changed.

a. What did they change?

b. What were the primary findings of this study? What do their results say about the presence of discrimination?

c. What is statistical discrimination? Explain one piece of evidence either for or against the presence of statistical discrimination in the labor market.