A study of cocaine addicts tries to explain what motivates them. What a complete waste of time it is to worry about whether someone who has fried his brain is money-motivated or not.
Seems like they might start by asking themselves what kind of moron shows up for a "scientific" study and self-identifies as a criminal rather than simply ignoring the variable as they do here.
Kentucky's public school drug education program, DARE, seems to be effective. This is actually one program I would like to see expanded. Probably wouldn't hurt to start kids into the program earlier.