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Male or female? Coloring provides gender cues
May 28, 2009Our brain is wired to identify gender based on facial cues and coloring, according to a new study published in the Journal of Vision. Psychology Professor Frédéric Gosselin and his Université de Montréal team found the luminescence of the eyebrow and mouth region is vital in rapid gender discrimination.
"As teenagers, dimorphism (systematic difference between sexes) increases in the nose, chin, mouth, jaw, eyes and general shape of faces," says Nicolas Dupuis-Roy, lead author of the study. "Yet we aren't conscious of how our brain recognizes those differences."
To discover those reference points, Dupuis-Roy and colleagues showed photos of 300 Caucasian faces to some 30 participants. Subjects were asked to identify gender based on images where parts of faces were concealed using a technology called Bubbles.
The investigation found that eyes and mouths, specifically their subtle shading or luminance, are paramount in identifying gender. Unlike previous studies, which found the gap between the eyelid and eyebrow as essential in gender ID, this investigation found the shades of reds and greens around mouths and eyes led to faster gender discrimination.
"Studies have shown that an androgynous face is considered male if the skin complexion is redder, and considered female if the complexion is greener," says Dupuis-Roy. "However, it is the opposite for the mouth. A woman's mouth is usually redder. Our brain interprets this characteristic as female."
"A man's face usually reflects less light around the eyebrows. This is because they are usually thicker. The same applies to the upper lip and chin, which are hairier areas," he adds, noting people clearly use colour to rapidly identify gender.
University of Montreal
The investigation found that eyes and mouths, specifically their subtle shading or luminance, are paramount in identifying gender. Unlike previous studies, which found the gap between the eyelid and eyebrow as essential in gender ID, this investigation found the shades of reds and greens around mouths and eyes led to faster gender discrimination.
"Studies have shown that an androgynous face is considered male if the skin complexion is redder, and considered female if the complexion is greener," says Dupuis-Roy. "However, it is the opposite for the mouth. A woman's mouth is usually redder. Our brain interprets this characteristic as female."
"A man's face usually reflects less light around the eyebrows. This is because they are usually thicker. The same applies to the upper lip and chin, which are hairier areas," he adds, noting people clearly use colour to rapidly identify gender.
University of Montreal
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The effectiveness of a screening colonoscopy may depend on the time of day it is performed. According to a new UCLA study, early-morning colonoscopies yielded more polyps per patient than later screenings, and fewer polyps were found hour by hour as the day progressed.
Gastroenterology/hepatology societies release report evaluating fellowship training curriculum
Due to the increasing complexities of treating digestive diseases, allowing gastroenterological (GI) trainee physicians the opportunity to develop enhanced abilities and experiences in specific disease areas or procedures will be a great benefit to patients, according to a "Report of the Multisociety Task Force on GI Training."
Study finds link between childhood physical abuse and arthritis
Adults who had experienced physical abuse as children have 56 per cent higher odds of osteoarthritis compared to those who have not been abused, according to a new study by University of Toronto researchers.
For gay and straight men, facial attraction operates similarly
A new study from a researcher at Harvard University finds that gay men are most attracted to the most masculine-faced men, while straight men prefer the most feminine-faced women.
Women with chronic kidney disease more likely than men to go undiagnosed
Woman are at particular risk of their primary care physicians delaying diagnosis of chronic kidney disease (CKD), according to a paper being presented at the American Society of Nephrology's 42nd Annual Meeting and Scientific Exposition in San Diego, California.
Married with children the key to happiness?
Having children improves married peoples' life satisfaction and the more they have, the happier they are. For unmarried individuals, raising children has little or no positive effect on their happiness.
The heart attack myth: Study establishes that women do have same the heart attack symptoms as men
The gender difference between men and women is a lot smaller than we've been led to believe when it comes to heart attack symptoms.
Women outperform men when identifying emotion
Women are better than men at distinguishing between emotions, especially fear and disgust, according to a new study published in the online version of the journal Neuropsychologia.
Feelings of stigmatization may discourage HIV patients from proper care
The feeling of stigmatization that people living with HIV often experience doesn't only exact a psychological toll -new UCLA research suggests it can also lead to quantifiably negative health outcomes.
First-time Internet users find boost in brain function after just 1 week
You can teach an old dog new tricks, say UCLA scientists who found that middle-aged and older adults with little Internet experience were able to trigger key centers in the brain that control decision-making and complex reasoning after just one week of surfing the Web.
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