We examine the importance of possible nonrandom attrition to an econometric model of life cycle labor supply using both a Wald test comparing attriters to nonattriters and variable addition tests based on formal models of attrition. Estimates using the Panel Study of Income Dynamics show that...

Census data from 1960 and 1970, augmented with schooling data (expenditures per pupil as well as other measures of school quality) from the various Biennial Surveys of Education, are utilized to analyze the impact of school quality on earnings and to ...