041: Siblings: Why do they fight, and what can we do about it?

Hot on the heels of our last episode on whether only children really are as bad as their reputation, this week's episode is for the 80% of families (in the U.S., at least) who have more than one child. How do siblings impact each other's development? What should we make of the research on how birth order impacts each child? Why the heck do siblings fight so much, and what can we do about it? (Turns out that siblings in non-Western countries actually don't fight anywhere near as much...) We cover all this and more with my guest, Professor Susan McHale of Penn State University.