I have read most of his articles but not the book yet. Will need to order it thnrough amazon.
As to the age range question, most australian stats referring to "youth" encompass the group 15-25 unless they are specifically delaing with a single age group issue ie ;binge drinking in school kids, in which case they will often look at a specific age group. EG i think one of the iste mentioned surveys of 9th grade kids in Seattle and melbourne.
While the Australian tabloid media does it's share of kiddie bashing, & our conservative govt has talked a lot obout the dangers of drugs, the focus of most anti drug education campaigns look more at harm minimisation than penalty.
I think there may also be a cultural difference in the approach to drinking. By the time most kids are 16 here it is pretty widely excepted that in private venues (non licenced) they will drink. Most of the alcohol education campaigns have centred around the dangers of drink driving and to a lesser extend binge drinking.