Tag Archives: testosterone levels

Society Bloomed with Gentler Personalities, more Feminine Faces

By Guest PostOctober 12, 2014Sciencecooperative temperament, cultural exchange, human skulls, modern humans, selective breeding, testosterone levels

DURHAM, N.C. – Modern humans appear in the fossil record about 200,000 years ago, but it was only about 50,000 years ago that making art and advanced tools became widespread. (more…)

Testosterone-fuelled Infantile Males Might be a Product of Mom’s Behaviour

By Guest PostMay 19, 2012Healthenvironmental factors, infancy, maternal smoking, sexual behaviour, testosterone levels

By comparing the testosterone levels of five-month old pairs of twins, both identical and non-identical, University of Montreal researchers were able to establish that testosterone levels in infancy are not inherited genetically but rather determined by environmental factors. (more…)