Difference Between Male and Female Salaries by Rank
and Type of Institution for Selected Years, Expressed As a
Percent of Male Salaries
Rank

All
Institutions

Category I
(doctoral)

Category IIA
(master's)

Category IIB
(bachelor's)

Category III
(two-year
with rank)
1975
Professor
9.2
10.2
3.0
6.1
3.1
Associate
3.8
4.7
1.9
6.3
1.2
Assistant
3.8
5.4
3.1
5.0
0.7
Instructor
4.5
4.8
4.3
4.9
4.6
1988
Professor

11.8

10.6

4.8

6.9

5.5
Associate
7.4
6.9
5.9
6.0
6.8
Assistant
9.5
10.0
7.5
5.4
6.4
Instructor
7.4
11.1
6.3
5.5
7.2
1998
Professor
12.5
9.4
5.4
5.2
0.1
Associate
7.2
6.2
5.0
3.5
0.1
Assistant
6.4
7.5
4.3
2.6
4.9
Instructor
3.8
5.7
2.9
1.3
3.2

Percentage Point Increase or Decrease in Male Advantage 1975 to 1998
Professor
3.3
-0.8
2.4
-0.9
-3.0
Associate
3.4
1.5
3.1
-2.8
-1.1
Assistant
2.6
2.1
1.2
-2.4
4.2
Instructor
-0.7
0.9
-1.4
-3.6
-1.4

Note: Categories correspond to those used in the AAUP's annual salary survey.
Source: AAUP Salary Surveys for 1974-75, 1987-88, and 1997-98.