Survey Says! Results on the Incredible Shrinking Pipeline
Tracy Camp1
Colorado School of Mines
The introduction of the incredible shrinking pipeline is taken from Communications of the ACM, vol. 40, no. 10, pp. 103-110, Oct. 1997, with permission. See [Camp 1997] for the full paper.
Abstract
Many of us in the computer community are aware
of the pipeline shrinkage problem; the pipeline represents the ratio of
women involved in computer science from high school to graduate school.
In this article, we consider the incredible shrinking pipeline; in
addition to the pipeline shrinking from high school to graduate school,
the pipeline also shrinks at the bachelor's level. Furthermore, while
the percentage of bachelor's degrees awarded in CS to women decreased
almost every year over the last decade, the corresponding percentages
of other science and engineering disciplines increased. Since the
number of women at the bachelor's level affects the number of women
at levels higher in the pipeline and in the job market, these facts
are of great concern.
In [Camp 1997], we looked at the harsh
facts concerning the percentage of degrees awarded in CS to women since 1980
and we speculated on what the future holds. We also requested that the
community respond to the facts presented
through an interactive survey. At this
time, 111 unique responses to the survey have been tabulated.
In this article, we summarize the facts presented in [Camp97],
and we outline the results obtained from compiling the
community's response to the incredible shrinking pipeline.
Introduction
The pipeline shrinkage problem concerning women
in computer science is a known phenomenon.
Although women make up 50% of high school Computer Science
(CS) classes[Walker and Rodger 1996], the percentage of bachelor's
degrees in CS awarded
to women in the 1993-94 academic year was only 28.4%[NCES 1996].2
At
the graduate level, for the academic year 1993-94, the percentages of degrees
in CS awarded to women dropped even further: 25.8% at the M.S. level and
15.4% at the Ph.D. level. In addition, for women who become faculty members,
the pipeline shrinks through the academic ranks. According to the CRA Taulbee
Survey, only 15.6% assistant professors, 9.4% associate professors, and
5.7% full professors were women in CS Ph.D.-granting departments during
the academic year 1993-94 [Andrews 1994-97]. We illustrate the pipeline
shrinkage problem in Figure 1.
In Figure 2, we illustrate the incredible shrinking pipeline: the percentage of bachelor's degrees awarded in CS to women decreased almost every year over the last decade. In other words, not only does the pipeline shrink from high school to graduate school, but it also shrinks at the bachelor's level. Furthermore, while the percentage of bachelor's degrees awarded in CS to women decreased, corresponding percentages of other science and engineering disciplines increased. Since the number of women at the bachelor's level affects the number of women at levels higher in the pipeline and in the job market, these facts are of great concern.
There are a number of reasons why we need to improve the percentage of
degrees awarded in CS to women. We direct readers interested in these reasons
to [Pearl et al. 1990]. In short, there is a critical labor shortage in
CS and, although women are more than half the population, they
are a significantly underrepresented percentage of the population earning
CS degrees.
In [Camp97], we consider the trend of degrees awarded in CS since 1980, we compare the trend in CS to other science and engineering disciplines, and we request that the community respond to the facts and speculations presented. In this article, we summarize the facts presented in [Camp97], and we outline the results obtained from compiling the community's response to the incredible shrinking pipeline.
Trends in Degrees Awarded: 1980-81 through 1993-94
We have already established that as women progress from high school to graduate school, they will be part of a smaller and smaller proportion of students. In this section, we consider the total number of degrees awarded in CS at each level and we further examine another kind of shrinking in the pipeline. From 1983-84 to 1992-93, the percentage of B.A./B.S. degrees awarded in CS to women consistently decreased. The percentages of M.S. degrees awarded in CS to women were more stable over this period, and the percentages of Ph.D. degrees awarded in CS to women (though still meager) increased.
The National Center for Education Statistics at the U.S. Department of
Education classifies Computer Science departments within the Computer and
Information Sciences (CIS) category. Figure 3 illustrates the percentage
of degrees awarded within different fields of study in CIS for B.A./B.S.,
M.S., and Ph.D. levels in 1993-94. As illustrated, the bulk of the degrees
awarded are in the general computer science category, with information
science and systems a distant second. We, therefore, use the acronym CS
is this article to represent all the fields of study in CIS. Table 1 lists
the number of B.A/B.S, M.S. and Ph.D. degrees awarded in CS (i.e., CIS)
from 1980-81 to 1994-95 and the percentage of recipients that were
women.
Although the percentages of Ph.D. degrees awarded in CS to women are very low, the numbers from the four most recent years available suggest the percentages are in an upward trend. However, due to the shrinking of the pipeline at the B.A./B.S. level (discussed below), it is unlikely that this upward trend will continue. From Table 1, we conclude that there is some good news at the Ph.D. level.
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At the B.A./B.S. level, there is only bad news
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Figures 4 and 5 compare the trend of degrees awarded in CS with the trends
of degrees awarded in disciplines similar to CS from 1980-81 through 1993-94.
The majors within a discipline are determined by the National Center for
Education Statistics:
Figure 4 illustrates that, while the number of B.A./B.S. degrees awarded
in other science and engineering disciplines decreased from 1985-86 to
1993-94, the decrease in CS was the most extreme. From 1985-86 to 1993-94,
Eng decreased 18.2% (95,660 to 78,225), Math decreased 16.0% (17,147 to
14,396), and Phy decreased 15.3% (21,717 to 18,400), but CS decreased 42.2%
(41,889 to 24,200). Bio/Life increased 33.4% (38,524 to 51,383) during
the same period. Figure 5 illustrates that the percentages of B.A./B.S.
degrees awarded to women by science and engineering disciplines (except
CS) increased almost every of the last 13 years. CS is the only science
and engineering discipline where the percentage of bachelor's degrees awarded
to women decreased. From 1980-81 to 1993-94, Bio/Life increased 16.3% (44.1%
to 51.3%), Eng increased 44.7% (10.3% to 14.9%), Math increased 10.0% (42.1%
to 46.3%), and Phy increased 36.6% (24.6% to 33.6%), but CS decreased 12.6%
(32.5% to 28.4%). From 1983-84 to 1993-94, CS decreased 23.5%.
In summary, even though more women are awarded B.A./B.S. degrees, and even though the percentages of B.A./B.S. degrees awarded to women in disciplines similar to CS increased, the percentage of B.A./B.S. degrees awarded in CS to women decreased.
Questions
In [Camp97], we asked a number of questions concerning the facts presented in the previous section. Why has the number of B.A./B.S. degrees awarded in CS decreased since 1985? Why is the decrease occurring at a faster pace for women than men? While the number of B.A./B.S. degrees awarded in CS in 1994-95 is almost equivalent to the number of B.A./B.S. degrees awarded in CS in 1982-83 (24,404 versus 24,510), why is the percentage of degrees awarded to women dramatically smaller today (28.4% versus 36.3%)? The percentage of B.A./B.S. degrees awarded to women in all disciplines increased from 1980-81 to 1993-94; the percentages of B.A./B.S. degrees awarded to women in disciplines similar to CS increased over the same time period. Why has the percentage of B.A./B.S. degrees awarded to women in CS decreased? Will the percentage of degrees awarded in CS to women continue to lag behind in the next decade? And, most importantly, what can we, as a community, do to improve the situation?
To answer some of these questions, we requested that the CS community respond to an interactive survey . At this time, 111 unique responses to the survey have been tabulated. In the following section, we give the results obtained from compiling these 111 responses. If you have not yet completed the survey, we request that you do so. We plan to present the results, including strategies proposed for attracting and retaining women in CS, in a future CACM issue.
Survey Responses
As previously mentioned, we obtained 111 unique responses to the survey: 88% (98/111) are female and 64% (71/111) are members of ACM. The following table illustrates the current professional status of the respondents:
A high percentage of the respondents are well educated:
The main field that the respondents are educated is, not surprisingly, computer science:
The following table illustrates approximately when each respondent decided to enter the computing field. As shown, a large percentage (51.8%) decided to enter the computing field while in college. Only 18.5% decided to enter the computing field while in high school.
In the previous table, four of the 10 respondents that marked "other" stated that they decided to enter the computing field after college, but before graduate school.
The following table illustrates what most influenced each respondent to enter the computing field. We asked the respondent to mark only the top two or three influences. The percentages illustrate the number of respondents that marked each choice. Since the respondents marked, on average, 2.4 influences, the total of the percentages is greater than 100%.
In the previous table, nine of the 13 respondents that marked "other" stated that they received encouragement from a friend/brother/boyfriend/spouse. Three of the respondents stated that they were discouraged by adults that were important in their lives. For example, one respondent wrote: "My parents discouraged me (I kept my grad studies a secret until near completion of my phd.)"
For each of the following
questions from the survey, we gave a list of possible
answers. For each answer, we asked the respondent to mark whether
he/she:
| strongly agrees |    respondent is convinced this answer had an impact on the question; |
| agrees |    respondent believes this answer had an impact on the question; |
| is uncertain |    respondent is unsure whether this answer had an impact on the question; |
| disagrees |    respondent does not believe this answer had an impact on the question; |
| strongly disagrees |    respondent is convinced this answer had no impact on the question. |
In the survey, we stated that the following answers may or may not be true. In other words, the answers should NOT be interpreted as a fact, but as a possible opinion.
In each of the survey questions, we tried to include multiple answers that are similar (stated in different ways) in order to minimize possible errors in the answers. Questions 3 and 4 in the survey asked similar questions:
Survey Question:
3. While the total number of B.A./B.S. degrees awarded in CS in
1993-94 is almost
equivalent to the total number of B.A./B.S. degrees awarded in CS in 1982-83
(24,200 to 24,510), why is the percentage of degrees awarded to women
dramatically smaller in 1992-93 (28.4% vs. 36.3%)?
In other words, what is different in the computing environment today
compared to 1982 that had a detrimental effect on the percentage of
degrees awarded in CS to women?
Survey Question:
4. The percentages of B.A./B.S. degrees awarded to women in other scientific
and engineering disciplines increased from 1980-81 to 1993-94: Biological/
Life Sciences increased from 44.1% to 51.3%, Engineering increased from
10.3% to 14.9%, Mathematics and Statistics increased from 42.1% to
46.3%, and Physical Sciences increased from 24.6% to 33.6%.
Why has the percentage of B.A./B.S. degrees awarded to women in CS decreased
from 32.5% to 28.4% over the same period (or from 37.1% to 28.4% over the
period of 1983-94 to 1993-94)?
In other words, what is different in the CS area compared to other science
and engineering (S/E) fields that had a detrimental effect on the
percentage of degrees awarded in CS to women?
The following chart gives the results of the survey for the above two questions. We collate the answers into categories for ease of comparison. The average is calculated by giving +2 for a Strongly Agree response, +1 for an Agree response, 0 for an Uncertain response, -1 for a Disagree response, and -2 for a Strongly Disagree response.
Agree |
Disagree |
|||||
Interesting comments from questions three and four of the survey:
Question 5 (parts I and II) concerns the relationship between the percentage of degrees awarded to women by a CS department, and the college the CS department is within. In our research, we have found that CS departments in engineering colleges graduate, on average, proportionately fewer women than CS departments in non-engineering colleges. (We refer the interested reader to [Camp97] and [Camp98] for statistics illustrating the College of Engineering Effect.)
Survey Question:
5. The percentage of degrees awarded to women by CS departments
in engineering
colleges is smaller than the corresponding percentages in non-engineering
colleges, as shown in the following chart:
| Degree | Engineering College | Non-Engineering College |
|---|---|---|
| B.A./B.S. | 22.5% | 28.3% |
| M.S. | 23.6% | 29.2% |
| Ph.D | 11.7% | 12.5% |
The following chart gives the results of the survey for the above two questions. We collate the answers into categories for ease of comparison.
Agree |
Disagree |
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In Question 7 of the survey, we consider what the community should be doing (if anything) to try and increase the percentage of women earning B.A./B.S. degrees. In the table that illustrates the results to the survey question, we collate the answers into categories for ease of comparison.
Survey Question:
7. What can we, as a community, do to improve the situation for women in
computing?
Agree |
Disagree |
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Interesting comments from question seven of the survey:
Survey Question:
8. From the above list, cite the top five items which you
believe we, as a community, should concentrate our immediate efforts in
order to improve the situation for women in computing.
The following table gives the top choices that 85 respondents cited. (Many respondents stated, "all are important". Since these respondents did not list top priority items, we do not include them in the results below.) On average, each of the 85 respondent listed 4.5 items that they felt are top priority. In the following table, we list the items that at least 10 of the 85 respondents marked as being top priority. The percentage column is the percentage of the respondents that believe this item is of top priority (i.e., divided by 85).
The important of role models is illustrated in the following quote: "During my senior year in high school (1976), we had a career day presentation from a woman who was a system programmer for the Bank of America. In her presentation she told us that programming was a woman friendly technical occupation. The reason for this was that, unlike most other technical occupations, there was never a point in the short history of professional programmers where women were excluded or not represented. After her talk a friend and I decided that we would go to UC Berkeley and major in Computer Science ..."
6.
Do you think the percentage of degrees awarded in CS to women will increase
decrease, or remain the same in the next decade?
Interesting comments from question six of the survey:
Conclusions
The computer industry is growing rapidly and there is a critical shortage of computer scientists in today's job market (see [Arnheim 1997] for statistics on the shortage today and [Keaton and Hamilton 1996] for statistics on what the future holds). Thus, it is critical that the number of B.A./B.S. degrees awarded in CS over the next decade increases, instead of continuing on its current decreasing trend.
Fortunately, we should see a dramatic increase, not a further decrease, in the number of B.A./B.S. degrees awarded in CS in the near future. According to the 1996 CRA Taulbee Survey, the number of B.A./B.S. degrees awarded in CS should increase in the near future, as the number of new bachelor students enrolled in computer science Ph.D.-granting departments increased 40% in fall 1996 and an additional 40% in fall 1997 [Andrews 1994-98]. In [Camp97], we speculate on how this increase in the number of degrees awarded will affect the percentage of women recipients. In short, we believe that the proportion of women earning B.A./B.S. degrees in CS will increase slightly in the next decade, but will continue to lag far behind their male colleagues.
In this article, we summarize the facts presented in [Camp97], and we outline the results obtained from compiling the community's response to the incredible shrinking pipeline. At this time, 111 unique responses to the survey have been tabulated.
ACKNOWLEDGMENTS
This work was supported in part by NSF Grant NCR-9702449.
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1 Tracy Camp is a member of the ACM Committee on Women in Computing (ACM-W). The mission of ACM-W is to engage in activities that aim to improve computing environments in order to gain equity for women in computing.
2 The number of degrees awarded for
the academic years 1994-95 have recently been made available from the National
Center for Education Statistics at the U.S. Department of Education; these
numbers have been incorporated into the tables, but
not the figures, in this article.