Blatant forms of discrimination against women in academia have diminished since the Equal Pay Act and Title IX became law in 1964 and 1972, respectively. Yet gender differences in salary, tenure status, and leadership roles still persist among men and women in higher education. In particular, wage differences among male and female professors have not been fully explained, even when productivity, teaching experience, institutional size and prestige, disciplinary fields, type of appointment, and family-related responsibilities are controlled for statistically (see here).
Scholars have argued that the “unexplained” gender wage gap is a function of less easily quantifiable (supply-type) factors, such as preferences and career aspirations, professional networks, etc. In fact, there is extensive evidence that both supply-side (e.g., career choices) and demand-side factors (e.g., employer discrimination) are shaped by broadly shared (often implicit) schemas about what men and women can and should do (a.k.a. descriptive and prescriptive gender stereotypes – see here)
Regardless of the causes, which are clearly complex and multi-faceted, the fact remains that the salary advantage held by male faculty over female faculty exists across institutions and has changed very little over the past twenty-five years (see here). How big is this gap, exactly?