Carefully-matched pairs of written job applications were made to test for age discrimination inhiring. A twenty-one year-old and a thirty-nine year-old woman applied for jobs where a newgraduate was sought; men aged twenty-seven and forty-seven, inquired about employmentas waiters; women aged...

Field experiments in which bogus pairs of transactors test for discrimination by applying for employment or housing, or by trading in product markets, have been widely-published during the last decade. However, no detailed justification has been provided for the deception involved. The general...