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We analyze the female-male gap in starting-salary offers for new college graduates using data from the annual surveys of the National Association of Colleges and Employers (NACE), unique (and proprietary) data that have not previously been used for this purpose. A major advantage of working with a data set on salaries for new college graduates is that we can remove the possible influence of gender differences in experience, promotions, job changes, and other factors on the salary gap. We find that as much as 95 percent of the overall gender gap in starting-salary offers can be explained by differences in college majors selected.
McDonald et al. (Mon,) studied this question.