The authors tested whether student performance in the principles of economics course is affected by the use of graphs as part of a lecture. They conducted two experiments at the University of South Carolina, one in spring 1995 and another in spring 1997. Students were randomly assigned to either...

Employing data for the United States taken from the 1983 wave of the Panel Study of Income Dynamics, an attempt is made to estimate tenure-earnings and tenure-productivity profiles. The underlying methodological approach is to assume that earnings of self-employed workers are identical to the...

Using a selective sample from the 1977 Panel Study of Income Dynamics, the authors investigate the relations among schooling, job experience, socioeconomic status (SES), IQ, and earnings in the United States. In contrast to the results for the United Kingdom reported by John Papanicolaou and...