There have been over 80 field experiments on traditional dimensions of discrimination in labor and housing markets … since 2000, in 23 countries. These studies nearly always find evidence of discrimination against minorities. However, the … estimates of discrimination in these studies can be biased if there is differential variation in the unobservable determinants …

"Audit studies testing for discrimination have been criticized because applicants from different groups may not appear … unobservable determinants of productivity can still generate spurious evidence of discrimination in either direction. This paper … shows how to recover an unbiased estimate of discrimination when the correspondence study includes variation in applicant …

Audit studies testing for discrimination have been criticized because applicants from different groups may not appear … unobservable determinants of productivity can still generate spurious evidence of discrimination in either direction. This paper … shows how to recover an unbiased estimate of discrimination when the correspondence study includes variation in applicant …