Simcha of I Have To Sit Down comments on gender differences. It’s all good, but here’s my favorite bit:

When my son was about 3, he wandered in while the girls were watching Barbie of Swan Lake (a movie whose narrative was a little too sappy, if such a thing is possible, for Tchaikovsky’s music). He stood there silently, mouth clamped shut, eyes broodingly fixed on the screen. After about twenty minutes, he croaked out, “This . . . is not good. I . . . don’t . . . like this.” Then he went in the other room to hit stuff.