Sex differences in response to children's toys

Sex differences in response to children's toys in nonhuman primates: In this study, we found that vervet monkeys (Cercopithecus aethiops sabaeus) show sex differences in toy preferences similar to those documented previously in children. The percent of contact time with toys typically preferred by boys (a car and a ball) was greater in male vervets (n=33) than in female vervets (n=30) (P<.05), whereas the percent of contact time with toys typically preferred by girls (a doll and a pot) was greater in female vervets than in male vervets (P<.01).

это в 2002-м опубликовано

Male monkeys prefer boys’ toys - это в 2008-м, в New Scientist.

а вот и The Atlantic отметился в 2012-м: You Can Give a Boy a Doll, but You Can't Make Him Play With It

related Gender Differences in Personality across the Ten Aspects of the Big Five

and somewhat related Faux-nobo: 'Naked Bonobo' demolishes myth of sexy, egalitarian bonobos