Do younger brothers steal more bases than older brothers? Part V -- the authors' response

This past summer, I posted a few times about Frank Sulloway and Richie Zweigenhaft's "sibling" study. The authors have now responded online.

Their response is here (.pdf).

I'm away on vacation, and don't have the original paper, or copies of the discussion I had with the authors via e-mail, so I'll just link the paper for now, in order to get it out there as soon as possible.

Thanks to Dr. Sulloway and Dr. Zweigenhaft for the discussion, and I'll probably comment further within a couple of weeks.