We characterize the bias of propensity score based estimators of common average treatment effect parameters in the case …

children, which can be seen as evidence of sexual bias related to a commonly believed existing preference for boys. …

We characterize the bias of propensity score based estimators of common average treatment effect parameters in the case …

average union premium of roughly 15 percent is called into question. Two forms of measurement error create a downward bias in … standard wage gap estimates. Match bias results from Census earnings imputation procedures that do not include union status as … a match criterion. Downward bias is roughly equal to the proportion of workers with imputed earnings, currently about 30 …

processes found in most social-science data, such procedures can induce or exacerbate bias, and even inflate the variance … estimates. We term this source of bias ?Iatrogenic? (or econometrician induced) error. Monte Carlo simulations and empirical …

reporting bias that arises if respondents justify being on disability benefits by overstating their work limiting disabilities. …

Social surveys are often used to estimate unemployment duration distributions. Survey nonresponse may then cause a bias … respondents and non-respondents. We develop a method to empirically distinguish between two explanations for a bias in results … both explanations. We discuss implications for standard methods to deal with non-response bias. …