My study uses data on earnings and relative numbers of students declaring the economics and biology majors to test the hypothesis that the choice of major is influenced by relative earnings. It is based on the work of Dr. Herschel Kasper and extends it by using a more recent data set. Like Dr. Kasper I find that the proportions of students who choose the two majors rise and fall as relative earnings rise and fall. This result is consistent with Human Capital Theory which predicts that career choices are influenced by relative earnings.
