This analysis uses several identification strategies and data sources to control for individual ability and determine the causal effect of marital status and computer usage on wages. Although data from the CPS, NLSY and a data set of identical twins show that there are large cross-sectional...

We use Canadian data from 1970 to 1994 to examine the substitution that can occur between social insurance programs that support disabled persons. We obtain our estimates using an instrumental variable estimator. We find that workers' compensation program policy variables have significant...