So no actual studies that support you then ? I ' m laughing so hard I can hardly breathe , As if it is any of your business , but my associates is in natural science , and when I went to my four year , I studied biology , ass . None of your posts show the slightest bit of familiarity or interest in biology . I know a bullshitter when I read his posts . You are cherry picking data out of these groups that aren ' t in any way a representation of society as a whole , So . where ' s the stuff I ' ve omitted ? The abnormal teaches you how the normal works . If someone get ' s hit on the head and goes blind , you know the bit of the brain that got damaged deals with vision . You don ' t grasp this ? CIAS shows you exactly what happens when an XY ' s don ' t repond to testosterone . That ' s all it does , it makes them not repsond to testosterone . They are males that didn ' t get masculinised and become men , and ended up being women . Disprove it . There was research in healthy monkeys that showed what happened when you added testosterone to female fetuses it masculinizes them . Disprove it . There ' s autopsy evidence from MF transexuals that show a very speciific feminized brain development . Disprove it . There ' s physical evidence from MRI ' s that homosexual brains are more like the opposite sex . Disprove it . CAH exposes women to too much testosterone in utero and affects their genitalia to the point where they can grow micropenises instead of a clitoris . Disprove it . Technically none of these are just psychology it ' s ' genuine ' science biology , genetics , medicine . Or are you arguing that gender is all down to socialisation ? Because believe me I ' m going to rip that apart like a fresh croissant . As for the ability to replicate tests , it ' s actually remarkably good when dealing with MRI studies . Most of the work I do has to do with measurable physical differences in brain structure and size as well as genetic research . Go on , show me work that contradicts me . Demonstrate familiarity with the subject . Demonstrate my confirmation bias . Show genes on the Y chr that affect behaviour I ' ll be waiting a long time for that one . Not getting my hopes up for a genuine academic argument though . As someone else said Show me that in the study . I dare you .