The Long and Short of Asking Questions About Income, Wealth and Labor Supply Greg J. Duncan Eric Petersen Northwestern University Keywords: Income, Wealth, Questionnaire *Corresponding author: Greg J. Duncan, Institute for Policy Research, Northwestern University, 2040 Sheridan Road, Evanston, IL 60208, e-mail: greg-duncan@northwestern.edu. We are grateful to the Family and Child Well-being Research Network of the National Institute of Child Health and Human Development (2 U01 HD30947-07) for supporting this research and to Nancy Adler, Charles Brown, Bruce Meyer and an anonymous referee for helpful suggestions.