I'm so glad someone has done this study! All throughout high school the information saying that marijuana would lead to harder things, etc, just seemed unlikely to me that someone would smoke a joint and then suddenly wind up in a drug rehab center? This is why D.A.R.E. never really panned out (I'm sure you remember D.A.R.E.- that program that never worked but Zack Morris helped speak for?) D.A.R.E. didn't pan out because people weren't being told the truth. If you are honest with people, then the information you give will sink in much deeper.