(PhysOrg.com) -- Young men who voted for Republican John McCain or Libertarian candidate Robert Barr in the 2008 presidential election suffered an immediate drop in testosterone when the election results were ...
Oct 20, 2009
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(PhysOrg.com) -- New research suggests women become less trusting, less open, more vigilant, and more skeptical and cynical if they are given the male hormone testosterone. This may reflect the survival value for women of ...
May 25, 2010
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For animals, prevailing in a fight affects their likelihood of winning future conflicts. The opposite is true of losing a fight. The sex hormone testosterone is often believed to mediate this "winner effect". ...
Apr 05, 2013
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The battle of the sexes rages on, this time from the trading floor. While there has long been debate about the social and biological differences between men and women, new research by the Kellogg School of Management at Northwestern ...
Aug 24, 2009
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A longstanding debate as to whether genius is a byproduct of good genes or good environment has an upstart challenger that may take the discussion in an entirely new direction. University of Alberta researcher Marty Mrazik ...
Mar 11, 2011
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Mate competition by males over females is common in many animal species. During mating season male testosterone levels rise, resulting in an increase in aggressive behavior and masculine features. Male bonobos, ...
Jan 23, 2012
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(Phys.org)—In male songbirds of the temperate zone, the concentration of sex hormones is rising in spring, which leads to an increase in song activity during the breeding season. In the tropics, there has ...
Oct 31, 2012
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(PhysOrg.com) -- In many bird species males have a more elaborate plumage than females. This elaborate plumage is often used to signal body condition, to intimidate rivals or to attract potential mates. In ...
Oct 21, 2011
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A new study from Utrecht and Cambridge Universities has for the first time found that an administration of testosterone under the tongue in volunteers negatively affects a person's ability to 'mind read', an indication of ...
Feb 09, 2011
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Researchers at Columbia University Medical Center have discovered that the skeleton acts as a regulator of fertility in male mice through a hormone released by bone, known as osteocalcin.
Feb 17, 2011
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Having a good grasp of, or an aversion towards, using technology can be predicted by the hormones we are exposed to in the womb, researchers at the University of Bath have discovered.
Oct 13, 2010
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(Phys.org) —We've all heard it before: if a guy is made to feel less than manly, he'll act even more macho to make up for it. Now, new research suggests that this behavior may have something to do with ...
Apr 17, 2013
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High levels of the stress hormone cortisol play a critical role in blocking testosterone's influence on competition and domination, according to new psychology research at The University of Texas at Austin.
Sep 29, 2010
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Low levels of the male sex hormone, testosterone, in older men is associated with the onset of Alzheimer's disease, according to research by a team that includes a Saint Louis University scientist.
Oct 05, 2010
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