Androstenone, a testosterone derivative present in sweat and urine, can smell very differently (or not at all) to people depending on a single gene, according to Keller et al (2007). It is, of course, stronger in men's sweat and urine. Some smellers report a "sweet, floral" odor, while others report a more logical "sweaty, urinous" odor, and some ( Read more... )

Sex differences in gray matter (GM) concentration, from
Garcia-Falgueras et al (2006)

( Read more... )

Food neophobia, or an unwillingness to try new foods, affects males and females of all ages. Robert A. Frank, of the University of Cincinnati, who has studied food neophobia for over a decade, suggests that the difference between those who try new foods and those who don't is one of attitude, not sensory sensitivity (J. Fox, Psychology Today, 1999) ( Read more... )

Humans make judgements about the perceived gender of other humans so quickly that we are usually not aware of having done it. What factors influence these snap decisions? Ganel et al (2002) suggest that identity and gender are inseparably linked in cognitive facial recognition. This is in contrast to other models that suggest identity and sex ( Read more... )