Is Testosterone the New Truth Serum? Male Sex Hormone Found to Promote Honesty in Men Is Testosterone the New Truth Serum? Male Sex Hormone Found … Medical Daily23 hours ago Testosterone, the male sex hormone previously linked to aggression and criminality, may actually foster pro-social behaviors by increasing honesty in men. By Christine Hsu | Oct 10, 2012 07:26 PM EDT Testosterone, the male sex hormone previously linked to aggression and criminality, may actually foster pro-social behaviors by increasing honesty in men, according to new findings. EnlargeClose(Photo : Brandeis University) A jab of testosterone may reveal the truth in men. Men administered testosterone lied significantly less than men given a placebo. man researchers found that the hormone testosterone, which fosters the forming of sexual characteristics such as increasing libido and muscle building in males, may actually promote pro-social behavior and reduce lying in men. Follow us "Testosterone has always been said to promote aggressive and risky behavior and posturing," researcher Dr. Bernd Weber, a neuro-scientist from the Center for Economics and Neuroscience at the University of Bonn, said in a statement. However, researchers from the latest study published in the journal PLOS ONE, noted that more recent studies show that this sex hormone may also do the opposite and foster good behavior. Read more at http://www.medicaldaily.com/articles/12639/20121010/testosterone-new-truth-serum-male-sex-hormone.htm#ebHzdGEKZJ7Bt38S.99 "The disadvantage of many studies is, however, that they only correlate their subjects' testosterone level with their behavior," said lead author Dr. Matthias Wibral, adding that this study approach only shows statistical links and does not provide any insights into the causes for the behavior. "For testosterone does not only influence behavior; behavior, in turn, also influences hormone levels," Wibral explained. Scientists in the latest study took on an experimental approach that would allow them to see the cause and effect of testosterone in a study involving 91 healthy young men. Out of all the participants, 46 were treated with testosterone by applying it to the skin in gel form and the other 45 were treated with a placebo gel. "Neither the subjects themselves nor the scientists performing the study knew who had received testosterone and who hadn't," said Wibral. After the gel was applied, participants were asked to play a simple game of dice in individual booths. In the game, the higher their score, the higher the amounts of money participants received as a reward. Researchers said that experiment was designed in a way that allowed participants to lie. "Due to the separate booths, nobody knew whether they were entering their real scores into the computer, or higher ones in order to get more money," Wibral said. However, Wibral noted that researchers were able to determine later whether participants had cheated or not. .