Gender Bias 101 For Mathematicians

9 02 2013

The great enemy of the truth is very often not the lie—deliberate, contrived and dishonest, but the myth, persistent, persuasive, and unrealistic. Belief in myths allows the comfort of opinion without the discomfort of thought.

- JFK

MYTH 1: Sexism is perpetrated by a small number of men, typically close to retirement age, who are “against women.” Most academics, especially mathematicians, are open-minded people who are against discrimination.

FACT: Please read this study on gender bias in science hiring:


In a randomized double-blind study (n = 127), science faculty from research-intensive universities rated the application materials of a student—who was randomly assigned either a male or female name—for a laboratory manager position. Faculty participants rated the male applicant as significantly more competent and hireable than the (identical) female applicant. These participants also selected a higher starting salary and offered more career mentoring to the male applicant. The gender of the faculty participants did not affect responses, such that female and male faculty were equally likely to exhibit bias against the female student. Mediation analyses indicated that the female student was less likely to be hired because she was viewed as less competent.

See also summaries and discussion here and here, and my own posts here and here. This is not an isolated study, either. See, for example, this study on gender and blind auditions in music. I’ve seen the same exact thing in my own experience and heard about it from colleagues. Statistical evidence from my own university confirms it.

The bottom line is, we are all biased. We all tend to think of women’s work as somewhat smaller, derivative, inferior. We do so unconsciously and involuntarily. We are not aware of it, nor do we notice it in others. That’s what all these studies are saying. It’s as if everyone is wearing glasses with the same tint. You’re wearing them even if you’re “open-minded” or “against discrimination”, even if you start your sentences with “I’m not against women, but…”

It is not, and never has been, only about a few individuals who forgot to catch up with the times. It’s not about trolls who say horrible things about women on unmoderated blogs. It’s about you, and me, and everyone we know. It’s about the nice, polite, progressive people who just wish that their female colleague down the hall didn’t try to be more ambitious than is good for her. (She’s clearly good, but does she really think she’s equal to X and Y? And she doesn’t have the same leadership quality, either.) It’s about that paper by two female authors that’s just not quite as groundbreaking as this other paper written by two men. In other words, you need to start by examining your own bias.

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The perils of changing the subject

2 10 2012

(My previous post on the topic is here.)

The responses to last week’s PNAS study on gender bias in science have been satisfying, for the most part. I’ve gotten used to avalanches of knee-jerk reactions every time a study on science and gender comes out. This time, there is a good deal (relatively speaking) of subdued and contemplative silence, at least among the actual scientists; the denials seem diminished in quantity. The effect might not be obvious to a bystander, but is quite noticeable to someone who has been following the debates for a while. I hope that this is a good silence, that some of us are taking the time to sit down and actually think about it.

This of course doesn’t mean that the subject has suddenly become totally uncontroversial. As Sean Carroll says in comments:


At least the trolls have moved on from “there is no discrimination” to “discrimination is rationally justified.” Progress!

I’ll be more specific. The wonderful, wonderful thing about the Yale study is that it allows us to have this discussion without being called “paranoid,” “hypersensitive,” or “emotionally unbalanced.” It feels refreshing and different to read long, argumentative comment threads on the subject and never see those words.

The discrimination apologists argue that, given the same “official” credentials, the rational employer will give preference to a man over a woman, because babies, pregnancies, dolls, biological differences, innate abilities, bell curves, life priorities, and other similar perennials.

Then there are press responses. The New York Times ran an article on the Yale study, then followed up with a discussion page. Here’s what one of the participants contributed:


There is little to suggest that colleges and universities are systematically discriminating against women or discouraging them from pursuing STEM disciplines. [...]

Why should we focus on achieving balance in STEM fields, while ignoring the overall imbalance in higher education as men fall farther behind? Factors other than sexism are likely the cause as to why fewer women pursue STEM fields. When students choose majors, they take into account myriad factors, such as their interests, aptitudes and career aspirations. Some research suggests, for example, that women with high-levels of quantitative skills are also likely to have high aptitudes in other areas, while men with high STEM-aptitudes tend to be less talented in other areas.

That, right there, is why I usually stay away from this type of debates. Let’s recap what the study actually said: that given identical paperwork from two hypothetical job candidates, one male and one female, the woman was judged as less competent and offered a lower salary. This is not about whether girls, statistically speaking, are less interested in science. It’s about a specific candidate who had already met the prerequisites, got a degree, demonstrated interest and skill in research, stated his or her career priorities clearly and explicitly, and was received much better when his name was John instead of Jennifer.

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Biased

25 09 2012

This new study in PNAS on gender bias in science hiring is already making rounds everywhere, but in case haven’t seen it yet, here’s part of the abstract:


In a randomized double-blind study (n = 127), science faculty from research-intensive universities rated the application materials of a student—who was randomly assigned either a male or female name—for a laboratory manager position. Faculty participants rated the male applicant as significantly more competent and hireable than the (identical) female applicant. These participants also selected a higher starting salary and offered more career mentoring to the male applicant. The gender of the faculty participants did not affect responses, such that female and male faculty were equally likely to exhibit bias against the female student. Mediation analyses indicated that the female student was less likely to be hired because she was viewed as less competent.

The article is open-access, so you should be able to read it from home; if not, then the summaries here and here have the numbers.

The applicant’s resume was the same in all cases, except for the name (Jennifer or John, two names that were judged by the researchers to be equally “likeable”) and gendered pronouns. (It is available on the PNAS site as part of the “supporting information”.) It is fairly generic, calibrated to show a candidate who looks potentially promising, but not stellar. The candidate mentions research experience with two faculty mentors and a co-authored journal paper, and has plans to apply to graduate school in the future. A few details were added that, depending on the evaluator, might or might not matter: dropped out of a course, slacked off a bit early in college but then got serious and made up for it. (If you asked me, none of these would raise concerns.) Faculty responses were broken down by the respondents’ gender.

On a competence scale from 1 to 7, John received mean scores of 4.01 and 4.1 from male and female faculty respectively. Jennifer’s scores were 3.33 and 3.32, about 0.7 less than John’s. Similar differences were observed in the “hireability” and “mentoring” categories (the latter refers to the faculty member’s willingness to mentor Jennifer or John). The difference in mean salaries recommended for the candidate was also significant: 30,520 and 29,333 for John vs. 27,111 and 25,000 for Jennifer.

There are several important points here. One is that the subjects were actual scientists, doing what we normally do in the course of our work. The resume did not look fake or contrived – it would fit right in with the paperwork I receive all the time as a potential supervisor or member of selection committees. The authors do not study gender bias by proxy, trying to draw a straight line from girls and boys playing with dolls and trucks to faculty composition in top science departments. They test us on behaviours that have direct and immediate impact on women in science, and find us biased.

The “mediation” part is crucial. The scientists were not actively seeking to discriminate against women. They offered similar salaries to candidates that they perceived as equally competent, suggesting that, in their minds, they were evaluating the candidate purely on merit. The problem is that the female candidate was judged to be less competent, evidently for no reason other than gender, given that the resumes were exactly identical except for the name. The unconscious bias was “mediated” into different perceptions of the candidate’s competence.

I’m sure that most of the participants, believing themselves unbiased, would be shocked to see the results. In fact, I’d like to see a web test based on this experiment that deans, department heads, hiring committee members, journal editors, conference organizers and other decision makers would be required to take before assuming their responsibilities. I suspect it could be an eye-opener for many of us.

That the bias is unconscious and involuntary is confirmed by another finding: the female candidate was rated higher on a “likeability” scale. In other words, faculty respondents reported “liking” the female applicant better than the male one, even as they judged her to be less competent, were less willing to hire or mentor her, and recommended a lower salary. It confirms something I’ve believed for years now: it’s a blind alley for women to worry too much about being “liked”.

There’s much more to unpack here, from the responses all over the internet, to the better practices we could adopt in hiring (and elsewhere), to the myriad ways in which we interpret resumes and supplement them with other information, to possible explanations of why female scientists recommended lower salaries overall. It’s good that I’m on sabbatical, because that’s enough material for several posts. They should be forthcoming soon.





The other law of large numbers.

23 06 2011

If anyone here knows which planet Justice Antonin Scalia lives on, please do tell. I’d like to move there.

[...] left to their own devices most managers in any corporation – and surely most managers in a corporation that forbids sex discrimination – would select sex-neutral, performance-based criteria for hiring and promotion that produce no actionable disparity at all.

This is from this week’s SCOTUS ruling on Wal-Mart v. Dukes. (Full text here.) Justice Ginsburg’s dissent summarizes the basic issue well enough (see the full text for more details):


Women fill 70 percent of the hourly jobs in the retailer’s stores but make up only “33 percent of management employees.” 222 F. R. D., at 146. “[T]he higher one looks in the organization the lower the percentage of women.” Id., at 155. The plaintiffs’ “largely uncontested descriptive statistics” also show that women working in the company’s stores “are paid less than men in every region” and “that the salary gap widens over time even for men and women hired into the same jobs at the same time.”

The plaintiffs sought class action status on behalf of about 1.5 million women currently or formerly employed at Wal-Mart. The District Court and the 9th Circuit Court granted the class certification, after some haggling over who exactly is included in the class and what’s the relative importance of the monetary claims (backpay) to the rest of the suit (injunctive and declaratory relief). The Supreme Court, in a 5-4 split decision, reversed that ruling, on the grounds that… discriminatory practices are so many and varied that they can’t all be covered by one class suit. Scalia again:

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Truth, images and consequences

19 09 2010

If you haven’t checked out the link in my last post, I will have to spoil the surprise for you. The link goes to a Weierstrass Institute webpage promoting its successful bid to host the permanent office of the International Mathematical Union; the item of interest is the photo gallery of 12 distinguished mathematicians who supported the bid. All 12 are male, white, probably in their 50s or 60s.

My point was that such imagery could have alienated part of the constituency that the institute was addressing. The IMU Executive Committee for 2007-2010 includes two women (Cheryl Praeger and Ragni Piene), Ingrid Daubechies has just been elected President for the 2011-2014 term, and Christine Rousseau has been elected one of the two Vice-Presidents. As for race, it must be said that Germany is an overwhelmingly white country and Berlin an overwhelmingly white city, but then it might be added that the IMU mandate specifically includes reaching out to developing countries and its office will have to be able to support that mandate. I wonder if anyone at IMU flagged that photo gallery. Maybe they did, but other considerations prevailed in the end.

I would have left it at that. It was a PR misstep, easy fodder for a quick blog post but ultimately not that consequential. But then the commenters came up with reasons why, perhaps, the pictures should have been all male. They argued for “truth in PR”: if the reality were all male, it would have been wrong to falsify the image by including women who clearly didn’t belong. This, I believe, deserves a longer response. It’s not merely a question of “lying is bad”. You have to think a bit harder, consider the context, look past the easy templates to find alternatives.
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ToneCheck for Women

2 08 2010

Apparently this new software will check your email for emotional tone and issue a warning if you’re about to fire off a missive you might regret later. You can get it here if you’re interested. So far, it only works with Microsoft Outlook.

Great idea… but wait! What about a women’s edition? Every woman who’s spent any time in a male-dominated professional environment knows the value of keeping her tone in check. Here’s how ToneCheck for Women might work:

ORIGINAL TEXT: I disagree with you.

TONECHECK FOR WOMEN: I’m so very sorry about this, and I’ve been trying really hard, but I still don’t see why I’m wrong and you’re right. Perhaps I just don’t understand it well enough yet. If it doesn’t inconvenience you too much, could you please try to explain it to me again?

ORIGINAL: This paper by X and Y isn’t really that great. It may have been submitted to the Important Journal, but I don’t expect that it will be accepted, seeing as it only rehashes some old tropes. It’s unfortunate that there is no other evidence in support of X’s tenure case.

TONECHECK: X and Y are such wonderful colleagues. Of course this paper is a very interesting contribution to this exciting area of research, and I hope that X gets early tenure based on it. It’s only fair that our female colleague W, who has published several papers in the Important Journal already, should wait a few more years for her periodic review – not that anyone was asking me anyway.

ORIGINAL: Z is not a suitable candidate for this or any other significant administrative position. His stint as the graduate adviser was an unmitigated disaster.

TONECHECK: Z is such a wonderful colleague and I’m so happy that he has been nominated for this position. This is a major commitment of his valuable time, and he already has so many responsibilities, so is there any way that I could help him to do some of that work? Of course I would never be so selfish as to ask for service credit or any other compensation.

ORIGINAL: You’re the best graduate adviser we’ve had in many years.

TONECHECK: You’re doing such a wonderful job as the graduate adviser. Of course, so did Z, and Y, and all those respected and distinguished colleagues over the years. It’s such an honour to have had an opportunity to work with each of you.

ORIGINAL: I agree with you.

TONECHECK: Of course you have excellent arguments, but our wonderful colleagues X, Y and Z disagree with you, and I have already promised to help Z in his new job. Is it really possible for them to be wrong? I don’t know what to make out of it. I’m very sorry about it, but perhaps I just don’t understand it well enough yet, so could you please try to explain it to me again?

Heh. And now you’ll need to invent ToneReverse software if you want to know whether we’re still even trying to say anything.





An entirely positive approach. Or something.

17 06 2010

The other prefatory comment that I would make is that I am going to, until most of the way through, attempt to adopt an entirely positive, rather than normative approach, and just try to think about and offer some hypotheses as to why we observe what we observe without seeing this through the kind of judgmental tendency that inevitably is connected with all our common goals of equality.

- Larry Summers

Now, I know I had somethin’ to say
But the problem is, to say somethin’
Uh, you’ve got to say it.

- Stan Ridgway

John Tierney follows up as promised on his exquisitely daring column from last week:

  1. Claims of discrimination against women in science cite the same single Swedish study from 1997 over and over again.
  2. Many other studies conducted all over the world did not show similar bias.*
  3. Legislation doesn’t work, and anyway, women are just not that much into science.

I don’t even like to engage in this type of discussions. To me, they always have the taste (so to speak) of having a restaurant owner tell me that there can’t possibly be a cockroach in my soup because the restaurant has passed very strict inspections, can’t I see the certificate posted on the wall? Also, statistics show that the frequency of cockroach infestation is decreasing throughout the city, and in any case the pests don’t come out during the day – and all the while, said cockroach is swimming merrily across my plate right in front of me.

Forget the Swedish study from the 1990s. Let’s look at the results of this year’s Canada Research Excellence Chairs competition. 19 world-class scientists were hired into lucrative positions at Canadian universities, with the kind of research support that most of us can only dream of – and all of them are men. Not only that, but there were no women among the 36 shortlisted candidates, either. That did attract attention. Of the several explanations offered, some just don’t hold any water, for example that the female candidates might have somehow been intimidated by the tough competition and short deadlines. (Remember, we’re talking about star scientists here, not shrinking pansies.) This, however, cuts to the heart of the matter:

The academic “old boys club,” also was a factor. With limited time to find and court top researchers, universities resorted to “informal processes” to find candidates, the study finds. “These informal outreach processes may have involved senior researchers identifying potential nominees from among their international peers,” it says.

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Not good with breathing, either

5 04 2010

A few days ago I came across this incredible article about Dr. Clelia Duel Mosher. Never heard of her? Clelia Mosher (1863-1940) was a hygienist, medical doctor and Stanford professor. Her best known work was only discovered and published decades after her death. The historian Carl Degler found the notes in 1973 while going through Mosher’s papers:

“I opened it up and there were these questionnaires”— questionnaires upon which dozens of women, most born before 1870, had inscribed their most intimate thoughts.

In other words, it was a sex survey. A Victorian sex survey. It is the earliest known study of its type, long preceding, for example, the 1947 and 1953 Kinsey Reports, whose oldest female respondents were born in the 1890s. The Mosher Survey recorded not only women’s sexual habits and appetites, but also their thinking about spousal relationships, children and contraception. Perhaps, it hinted, Victorian women weren’t so Victorian after all.

If it’s Victorian!!! Sex!!! that you’re looking for, the article will disappoint you. Instead, it offers a fascinating profile of a woman who was way too far ahead of her time, who believed herself equal to her male colleagues even after gender discrimination forced her to give up medical practice. She went on to join Stanford faculty as assistant professor, attaining the rank of full professor just one year before retirement.

But it’s Mosher’s work, not life, that I want to write about, From the same article:


Thanks to a steady supply of young female research subjects, Mosher’s scholarly aim soon became clear: to prove that women were not inferior to men, and that frailties chalked up to sex were really the effects of binding garments, insufficient exercise and mental conditioning. Her master’s thesis, for example, showed that women breathe from the diaphragm, as men do, rather than from the chest, as was believed at the time. She concluded that this so-called biological difference was really due to tight corsetry.

I’ve seen some of the clothing that Mosher talks about, courtesy of the Original Costume Museum Society. Had it explained to me, too. These clothes were not just uncomfortable. They were crippling, sometimes to the point of bordering on the macabre. Tight corseting from young age prevented the abdominal and back muscles from developing normally. The massive skirt bent the spine into a grotesque S-curve that would cause today’s orthopedists to recoil in horror. (Contemporary physicians weren’t exactly thrilled, either). Many miscarriages and deaths in childbirth could be attributed to the atrophied muscles, the weakened bones, the hips jutting out from backs at unlikely angles.

[Source]

We could just as well elaborate on the exercise (or lack thereof), personal hygiene and mental conditioning. It’s known well enough that the Victorian lifestyle was not optimal for women’s health. Obviously it was not thought of as such at the time. In her book Woman’s Physical Freedom, Mosher documents all this at great length, citing studies and providing statistics, justifying in detail the lifestyle recommendations that we would now accept as obvious.

What I did not know – or at least I don’t think I’ve seen it brought into such focus – is that there were “scientific” theories and beliefs associated with the lifestyle. In Mosher’s own words:

Is it not possible that at least some of women’s physical disqualifications as well, have been owing to surrounding conditions rather than inherent in her sex? I agree with Professor Meyer at Stanford University in his statement that “we cannot make a man into a woman nor a woman into a man.”– I will go still further and say that we do not even wish to do so. But we may make a judicial examination of these traditional handicaps in the light of scientific knowledge. Indeed we must do this, since the new conditions resulting from the world war oblige women to undergo the strain of unparalleled labor which they are traditionally unfit to bear; in this intolerable situation the need for truth with regard to women’s physical limitation becomes imperative.

In 1892 every physiology still taught that women breathed costally, and men abdominally. The costal respiration of women was believed to be a provision against the time of gestation. In 1894 the writer while at Stanford University, and Dr. Fitz at Harvard, independently and almost simultaneously, demonstrated that there is no sexual difference in the type of respiration.

This of course reminds me of the contemporary theories claiming (for example) that women aren’t biologically wired for math or science. Then, as now, we were entangled in a web of social conventions and superstitions that had the effect of keeping women in their place. Then, as now, biological theories and beliefs were created to “explain” it. Then, as now, the relevant medical science was incomplete enough to allow plenty of theories that couldn’t be proved or disproved. (Mosher herself did not shrink from the occasional stray conjecture, and if you think that she was alone in this, you should read this story.) All the same, many of the presumed innate differences had a way of disappearing once the aggravating factors were removed.

The biological differences between genders have never been a purely medical issue. They had serious economic and political implications back in Mosher’s days, as she points out repeatedly, and they still do. My best guess is that 200-300 years from now, once neuroscience has advanced to a point where we might actually begin to unravel the biological roots of intelligence, our supposed deficiency in innate math ability will turn out to be yet another instance of that well known female disorder that renders women physically incapable of picking up a large paycheck or giving an order to a man.

It’s quite possible, though, that new theories of biological differences will be developed by then. History does like to repeat itself.





The joy of political incorrectness

16 01 2010

Thanks to my Avatar post, I guess I’m officially a part of “a bizarre cast of characters”. Then again, what else would you expect from a math professor.

James Cameron might be laughing all the way to the bank, but his record-setting 3-D film, Avatar, is receiving criticism from a bizarre cast of characters, who accuse it of being everything from a racist throwback to the source of their overwhelming depression.

The accusations range from the comical to the militantly politically correct, with voices on both sides of the right-left political divide weighing in on the blockbuster, which has earned more than $1.1-billion around the world since its release last month.

The problem with Avatar isn’t political incorrectness – it’s the shallow, schematic thinking propped up by every possible cliché. But I’ve spent enough time on that already, so instead I’m going to write about a TV series that I’m enjoying immensely even though it’s not politically correct in any conventional sense.

That would be Mad Men, of course. The male characters are all incredibly sexist, in ways that wouldn’t even be possible today; but Mad Men counters that with two basic things. First, the sexism is not romanticized or excused: it’s just there, and it’s shown for what it is. And second, the series is just so darn well written. (Warning: mild spoilers follow.)
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Right back at ya

17 11 2009

If you’re female and you’re reading this, stop whatever else you’re doing for a moment and go read these three posts at Women in Wetlands, now also on my blogroll. (Found in the comments here.) They offer sensible and practical advice on how to respond to situations such as this one:

Imagine you are in a meeting among colleagues, post-docs, support staff, and clients. You are part of a group who has received a $1.2 million grant from BP (British Petroleum) to do environmental impact assessments at some of their drill sites. You have just given an overview of your research project (to assess the effects of oil exploration activities on wetlands in Kookamoonga, BP’s newest drill site). When you finish and look to the group for some positive feedback, a senior male scientist (known for being loud and opinionated) states that:

“The research proposed by Mary involves a large amount of fieldwork in a VERY remote location, and in my opinion is too difficult for a woman to lead or conduct. I think it would be best assigned to Bob (his protege’) to head up; maybe Mary can be responsible for the sample processing and data analysis back here at BIU.”

What do you do?

I’ve been in some variant of every single one of these situations, including the one just described, and I wish I had been better prepared to deal with them.

It’s tempting to think of the Senior Male Scientist as some old guy that you don’t know well and never talk to anyway. In real life, though, it could be your friend or mentor, someone you trust, someone whose opinions you value. He might not say explicitly that a woman can’t lead – he’ll just suggest a male candidate to replace you – and, mind you, it’s not sexist at all, he just wants the best possible person to direct the project, and in any case this is a matter of professional judgement and you should not be so sensitive about it.

The beauty of the responses suggested in the WiW posts is that they’re civil enough to be used on a friend and that they let you make the statement you need to make without getting dragged into unnecessary discussions. There’s no point in analyzing the Senior Male Scientist’s possible intentions. You just need to respond to the words you’ve heard.

There’s another reason to avoid protracted discussions of this sort: verbal sparring can only get you so far. I’ve seen enough situations where Dr. X was universally praised by colleagues for his excellent arguments and professional demeanor in the debate with Dr. Y, it was just so very unfortunate that the department would have to side with Dr. Y anyway. The debate would be a spectator sport, as opposed to something that could actually affect the outcome of the case. The lesson for you is that, instead of spending your time debating Senior Male Scientists with regard to their choice of wording, it could be more worthwhile to figure out why exactly the department sided with Dr. Y and how this might be applicable in your case. (That could be money, prestige, any number of things.) Making good headway in that direction is far more likely to convince Senior Male Scientists that they should take you seriously.

Which is not to say that you should not argue with Senior Male Scientists. You absolutely should, if only because having a good response will make you feel in control of the situation and that’s good for your morale, or because these things do make a difference in the long run. But short responses work better than long ones, and don’t give the Senior Male Scientist an opening to bring up the ever looming topic of your sensitivity if you can help it. That’s of course easier said than done. I haven’t always been good at it. I wish I had read posts such as these many years ago and taken some time to practice the responses in question. Then again – if you can’t come up with a good response, keep in mind that it’s only words…








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