then, declining somewhat during the early to mid-fifties and rising after 1981. The ratio in the manufacturing sector rose …

implements a pair of tests for the exogeneity of wages in a longitudinal labor supply model, and for the particular failure of … hours Granger -- cause wages at the individual level. The second test involves a simultaneous estimation of labor supply and … from the process generating wages, even when long time series are available on a sample of individuals …

, motherhood, and wages. We find that heterogeneity leads to biased estimates of the "direct" effects of marriage and motherhood on … wages (i.e., effects net of experience and tenure); first-difference estimates reveal no direct effect of marriage or … motherhood on women's wages. We also find statistical evidence that experience and tenure nay be endogenous variables in wage …

training programs in the United States. Even with the aid of a randomized experiment, the impact of a training program on wages … that the program raised wages, consistent with the notion that the Job Corps raises earnings by increasing human capital …

, father's education, and wages for young men and their siblings from NLSY. We also examine the empirical implications of …

This paper examines the effects of cocaine and marijuana use on the wages of a sample of young adults drawn from the … rather surprising results suggest that for this sample, increased use of marijuana or cocaine is associated with higher wages … observed positive relationship between drug use and wages. The results from this analysis do not support such a hypothesis …