The definition of "cool" defined as "Pseudomature behavior—ranging from minor delinquency to precocious romantic involvement" seems designed to detect poor kids and kids from dysfunctional and abusive homes. It's only the word 'cool' that's getting this into the media rotation. If the headline was "Poor kids and kids from dysfunctional and abusive homes lose," I'm not sure that anybody would be interested in reading the story.

Too bad the public isn't allowed to read the study, so I can't actually see all of their metrics for defining cool other than petty crime and early sexual behavior - things that plenty of clearly not-cool kids get into.