Writing a book about recess could be a very questionable endeavor for a serious academic psychologist. At first blush it seems to be a pretty trivial topic. It's the time during the school day where there's a break from what's typically considered the most serious work of the day--reading, writing, and arithmetic. Reflecting this trivial tenor, it's also that time of the school day that kids--perhaps only half jokingly--say is their favorite part...