A new study provides some insight.
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Academic studies can be fascinating... and totally confusing. So we decided to strip away all of the scientific jargon and break them down for you

The Background

Whether or not "gaydar" -- a supposed intuitive ability to identify gay people -- is real, many people believe it's possible to tell someone's sexual orientation just by looking at them. The problem is, research (and anecdotal evidence) has found that gaydar tends to rely on stereotypical attributes -- like the way someone dresses or how they style their hair -- that don't actually tell you anything about who someone's attracted to. Gaydar, therefore, seems to legitimize these stereotypical myths, something that's been shown to lead to prejudice and oppression. Unlike other forms of stereotypes, however, gaydar has seeped it's way into popular culture, and it's considered relatively harmless and socially acceptable

In a new five-part study, researchers from the University of Wisconsin-Madison set out to see if what they refer to as "the gaydar myth" is as "harmless" as some people may think or if it's just a veiled method of perpetuating gay stereotypes. 

The Setup

In the first study, participants looked at pictures of 55 gay men and 50 straight men's faces selected from an online dating site. Each photo was rated for overall quality, from "very poor" to "excellent," by a set of student raters before the study. Then, the researchers randomly paired the photos with a supposed descriptive statement about the person that was either gay-stereotypic ("He likes shopping."), stereotype-neutral ("He likes to read.") or straight-stereotypic ("He likes football."). These weren't actually applicable to the men in the photos, but participants didn't know that. They were then instructed to determine whether or not the man in the photo was gay. For the second study, the researchers repeated the first study, but this time they only chose photos that were rated highest in quality from both the straight and gay men groups of photos. 

Both the first and second studies found that when participants were given stereotypically gay personal statements with photos, they were much more likely to guess that the man in the photo was gay. Meaning: The pictures didn't matter nearly as much as the stereotypes did.

The third study had participants categorize the same gay and straight men's pictures without the accompanying stereotypic statements. The researchers found that people were more likely to assume men in higher quality photos were gay -- they seemingly assumed gay men would take better photos. The fourth study replicated the third with women's photos instead of men's to see if the same was true for lesbians. Participants were unable to gauge sexual orientation simply by looking at a person's face.

Finally, the researchers did their fifth study to determine whether or not gaydar serves as a legitimizing myth for these stereotypes. They gathered 233 undergraduate participants and divided them into three groups: one that would be told that gaydar is stereotyping, one that would be told that gaydar is real and one that would be given no information regarding gaydar. Participants then completed a modified version of the first study, using the same pictures and statements. This time, however, participants could refrain from guessing the person's sexual orientation if they wanted. 

The Findings

In the final study, participants' answers depended on which group they were in. Those in the "gaydar is real" group tended to believe in gaydar more than the other groups, and people in the "gaydar is stereotyping" group believed in it less than the control group. In this final version of the study, it was easy to see that people didn't assign sexual orientation simply because they were forced to choose -- participants had a "no idea" option, yet they chose it "very infrequently," according to the study.

As the researchers put it: "The evidence provided in Study 5 indicates that the folk concept of gaydar serves as a legitimizing myth, promoting stereotyping to infer orientation by giving that stereotyping process the alternate label of 'gaydar.'" Basically, when people slap on a euphemism for stereotyping -- in this case, "gaydar" -- they feel free to judge groups of people by very limited parameters which legitimize societal myths. These findings build on past research about how stereotypes that seem plausible will likely lead to inaccurate assumptions.

The Takeaway

Taken at face value, the concept of gaydar may not seem like such a big deal, but there's one big problem with stereotyping: It often leads to inaccurate conclusions. The researchers put it in terms of the "gay men like shopping" trope. If people assume gay men like shopping, that doesn't mean that all men who like shopping are gay (or that all gay men like shopping). Not to mention, if gay men make up 1.8 percent of the male population in America, even if they're ten times more likely to enjoy shopping, men who like shopping are still more likely to be straight -- there are simply more men who identify as straight out there. 

Perhaps the researchers put it best: "Whether people fit or violate their group's stereotypes is immaterial to their value -- we would hope that, rather than being judged or pressured based on the existence of a stereotype, people can be treated as individuals and judged on their own merit." Amen.

 

Also on HuffPost:

28 Bisexual Celebrities
Megan Fox(01 of28)
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In a 2011 Esquire interview, Megan Fox confirmed her bisexuality, stating, "I think people are born bisexual and then make subconscious choices based on the pressures of society. I have no question in my mind about being bisexual. But I'm also a hypocrite: I would never date a girl who was bisexual, because that means they also sleep with men, and men are so dirty that I'd never want to sleep with a girl who had slept with a man."

(credit:AP)
Billie Joe Armstrong(02 of28)
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The Green Day front man opened up about his sexuality in a 1995 interview with The Advocate: "I think I've always been bisexual. I mean, it's something that I've always been interested in. I think everybody kind of fantasizes about the same sex. I think people are born bisexual, and it's just that our parents and society kind of veer us off into this feeling of 'Oh, I can't.' They say it's taboo. It's ingrained in our heads that it's bad, when it's not bad at all. It's a very beautiful thing."

(credit:AP)
Margaret Cho(03 of28)
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Comedian Margaret Cho has long been open about her sexuality. In August 2013, Cho discussed the semantics surrounding her open marriage to artist Al Ridenour, saying that she's "technically not able to stay with one person sexually because I’m bisexual,” and joking that she just “can’t stop up that hole.” She also identifies as queer, and opened up about her sexuality in an interview with HuffPost Gay Voices Editor-At-Large Michelangelo Signorile.

(credit:AP)
Clive Davis(04 of28)
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Twice-married record executive and music mogul Clive Davis came out as bisexual in his 2013 memoir, The Soundtrack Of My Life. Davis opened up about two long-term relationships he had with men after his divorce from his second wife.

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Anna Paquin(05 of28)
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Anna Paquin is adamantly open about her bisexuality. The actress told "Zooey" magazine in a 2009 interview, "For me, it’s not really an issue because I’m someone who believes being bisexual is actually a thing. It’s not made up. It’s not a lack of decision." (credit:Getty)
Megan Mullally(06 of28)
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After telling The Advocate in 1999 that she was bisexual, Mullally clarified her statements in an interview with Queerty, telling the blog: "I said that I thought that everybody is innately bisexual. I think there are different levels of awareness attached to that, so I may believe that everybody is innately bisexual, but somebody who is very homophobic may not see that quality in themselves in any way, shape or form. That’s on a very philosophical or even metaphysical level, you know what I mean? It’s not something that I think people are ready for yet. I think if you ask the average guy on the street if he was innately bisexual, he’d be like, ‘What the fuck are you talking about?’ and then he’d punch you in the face. So, we’re not quite there." (credit:AP)
Azealia Banks(07 of28)
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The rapper has been openly bisexual since the early days of her career: "I mean, I'm bisexual, so it makes sense. But I don't want to be that girl who says all gays necessarily hang out together, of course! I have people say to me, 'Oh wow, my friend is gay, too,' and I'm like, 'Yeah, so?'" (credit:Getty)
Andy Dick(08 of28)
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Many people mistakenly assume that Andy Dick identifies as gay. However, he told The Washington Post in a 2006 interview that, "just because I've been with guys, and I'm bi, doesn't mean I'm gay." (credit:AP)
Bai Ling(09 of28)
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Actress Bai Ling is openly bisexual -- and the identity category has often provided some humorous mix-ups involving her first name. According to GLAAD, she discussed it in-depth in a 2009 interview with Entertainment Weekly: "[A]t first when I was in the United States I didn't always have an interpreter in interviews and I didn't speak English so well. There was some confusion. My name is pronounced 'bi,' so when I was asked, 'Are you bi?' I said, 'Yes, I am Bai.' Do you like men? 'Of course!' Do you like women? 'Why yes!' And later I found out what that means and I said, 'Sure, I am bi!' But I think the interpreters and the reporters thought that I didn't know what I was saying because I was so open about it. They were uncomfortable about it. Such a thing is not important for me."

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Carrie Brownstein(10 of28)
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The "Portlandia" star and former guitarist and vocalist for Sleater-Kinney is often assumed to identify as gay. However, she told "Willamette Week" in 2012 that, "It’s weird, because no one’s actually ever asked me. People just always assume, like, you’re this or that. It’s like, ‘OK. I’m bisexual.’”

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David Bowie(11 of28)
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Though David Bowie has historically played coy surrounding his sexuality, he clarified the subject in a 1976 interview with "Playboy." "It's true -- I am a bisexual. But I can't deny that I've used that fact very well. I suppose it's the best thing that ever happened to me." (credit:Getty)
Snooki(12 of28)
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The always-polarizing Snooki sat down with The Huffington Post in February 2012 and sought to clarify her sexual preference. "I would consider myself bi. I've done stuff with girls before. But I would never be with a girl because I like... penis. But I've experimented." (credit:AP)
Amber Heard(13 of28)
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Amber Heard has been openly bisexual for quite some time, and discussed this aspect of her identity in "Elle." The model and actress told reporters: "[I] didn't want to look like I was hiding anything." (credit:Getty)
Angelina Jolie(14 of28)
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Angelina Jolie has been open about her sexuality for quite some time, having had numerous encounters and relationships with women. She reportedly told OK Magazine that, "I have loved women in the past and slept with them. I think if you love and want to pleasure a woman, particularly if you are a woman yourself, then certainly you know how to do things a certain way." (credit:Getty)
Evan Rachel Wood(15 of28)
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Evan Rachel Wood came out on Twitter in 2012: “I myself am bisexual and have always ‘joked’ about Miley giving me gay vibes. Not a bad thing! Just an observation.” (credit:AP)
Sapphire(16 of28)
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The author of Push, the book that inspired the critically acclaimed film "Precious," describes herself as bisexual. (credit:Getty)
Drew Barrymore(17 of28)
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Drew Barrymore originally came out in an interview in Contact Magazine in 2003, saying, "Do I like women sexually? Yeah, I do. Totally. I have always considered myself bisexual... I love a woman's body. I think a woman and a woman together are beautiful, just as a man and a woman together are beautiful. Being with a woman is like exploring your own body, but through someone else." (credit:Getty)
Frenchie Davis(18 of28)
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This former "American Idol" and "The Voice" contestant came out in 2012, telling her fans that she had been in a relationship with a woman for the past year and had dated men and women. (credit:Getty)
Vanessa Carlton(19 of28)
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Musician Vanessa Carlton came out publicly at 2010's Nashville Pride, announcing to a crowd of 18,000 that, "I've never said this before, but I am a proud bisexual woman!" (credit:Getty)
Fergie(20 of28)
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The Black Eyed Peas front woman confirmed speculation surrounding her sexual identity in 2009 through an interview with The Advocate: "Q: After you discussed past sexual experiences with women in an interview with 'The Sun' in May, headlines everywhere read, 'Fergie Admits She’s Bisexual!' A: The funny thing is that I was very open and honest about that from the very beginning, and everyone was acting like it was some new trend. Go back four or five years, people, and you’ll see the same answer." (credit:Getty)
Pete Townshend(21 of28)
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In his book, Who I Am: A Memoir by Pete Townshend, this musician confirmed that he is "probably bisexual" and cited his attraction to Mick Jagger, calling him "the only man I've ever seriously wanted to fuck." (credit:AP)
Tila Tequila(22 of28)
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Tila Tequila is not one to shy away from anything. The former Myspace celebrity did several reality shows centered around identifying as bisexual, beginning with "A Shot At Love With Tila Tequila." She was also the girlfriend of Casey Johnson, the Johnson & Johnson heiress, who passed away in 2010. (credit:Getty)
Amber Rose(23 of28)
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Amber Rose has long been perceived to be openly bisexual without actually addressing the way she identifies. In an interview with Complex magazine, the model sought to clarify the rumors: "They label me a bisexual freak stripper that fucks Kanye on a daily basis. To answer that: I’m extremely open with my sexuality. I can be in love with a woman, I can be in love with a man. I’m not into bestiality, but as far as humans go, I definitely find beauty in everybody, whether they’re heavy-set, super-skinny, if they’re white, black, Indian, Asian, Spanish. I can see beauty in anybody. I’m not into threesomes or orgies and shit like that. If I see a women and I think she’s beautiful and I like her, and she likes me back we can definitely try to be in a relationship together." (credit:Getty)
Cynthia Nixon(24 of28)
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Currently married to wife Christine Marinoni, Nixon confirmed in a January 2012 interview with The Daily Beast that she is bisexual. The "Sex And The City" star stated, "I don’t pull out the 'bisexual' word because nobody likes the bisexuals. Everybody likes to dump on the bisexuals... We get no respect." (credit:Getty)
Jillian Michaels(25 of28)
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The first lady to ever come out in "Lady's Home Journal" as bisexual, "Biggest Loser" coach and personal trainer Jillian Michaels told the magazine in 2010: “Let’s just say I believe in healthy love. If I fall in love with a woman, that’s awesome. If I fall in love with a man, that’s awesome. As long as you fall in love… it’s like organic food. I only eat healthy food, and I only want healthy love!” (credit:Getty)
Kim Zolciak(26 of28)
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Former "Real Housewives Of Atlanta" star Kim Zolciak was in public relationships with both the mysterious "Big Poppa" and DJ Tracy Young before marrying Kroy Biermann. In a 2010 interview with Life & Style, interviewers posed the following question for the reality queen: "Q: Do you feel you're giving a voice to other bisexual parents? A: I'm among the millions of parents who have been in a gay or lesbian relationship. It hasn't been an easy road lately, but I feel there are no mistakes in my life. Everything happens for a reason. To have the opportunity to speak for myself and to have people understand what I'm going through is really special. I myself was confused and scared at first. Being able to speak from my heart and get this all out, it's a huge relief for me." (credit:Getty)
Lady Gaga(27 of28)
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Lady Gaga has been open for quite some time about her bisexuality, initially coming out in a 2010 interview with Barbara Walters. (credit:AP)
'Mama June' Shannon(28 of28)
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The star of "Here Comes Honey Boo Boo" revealed that she's bisexual in an "Inside Edition" interview in April 2015. Her daughter "Pumpkin" Lauryn Thompson also came out as bi at the same time.

(credit:Charles Norfleet via Getty Images)

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