In case you were ever in any doubt, we now know the preferred penis size of womankind.

According to the upstanding folk at the Department of Psychiatry at the University of California and the Department of Psychology at the University of New Mexico, studies of women’s penis size preferences have typically relied on the abstract rating of 2D, flaccid images. But no more. In this study, 75 women were asked to assess 33 3D-printed phallic objects and to choose which object would represent the size of penis they would prefer for a one night stand and which they would choose in a long-term partner. The most popular size chosen by women for a long-term relationship was 6.3 inches. And for a one-night stand? A not-too-much-bigger 6.4. Twenty-seven percent of the women who took part in the study reported that they had ended a relationship due, in part, to a mismatch between their penis size preference and their partner’s penis size. More women cited that a too-small penis was a problem, rather than that the penis was too large. Fascinating stuff. It doesn't exactly do much for body image among humans in generally however; according to the latest research, penis size was a concern for 68.3 per cent of 200 men. About half of men in one study believed that they could change their penis size through non-surgical means but in reality, little can be done to change its appearance. Sorry, boys. Image: PLOS