to measure infants'

visual attention

to two different types of toys,

one that's preferred by girls,

and one that's typically preferred by boys.

And what we showed was that

in these very young infants

there were sex differences

in their toy preferences. And we just

think of them as so trivial. "Toys - so what?"

But actually this is sort of interesting

in the context of toys and why are they important

because the types of toys that

boys and girls prefer

are thought to influence the

development of later sex differences.