@techreport{NBERt0058,
 title = "Bias in Longitudinal Estimation of Wage Gaps",
 author = "Gary Solon",
 institution = "National Bureau of Economic Research",
 type = "Working Paper",
 series = "Technical Working Paper Series",
 number = "58",
 year = "1986",
 month = "June",
 URL = "http://www.nber.org/papers/t0058",
 abstract = {Cross-sectional regression analyses of wage gaps may be biased by omission of unobserved worker characteristics. Recent studies therefore have used longitudinal data to "difference out" the effects of such variables. This paper. however. shows that self-selection of job changers may cause longitudinal estimation of wage gaps to be inconsistent.},
}