Canada

It is quite relevant whether or not something is addictive or not. If someone is told that a particular substance is addictive and can lead to addiction that imposes a variable in the study. Individual A is told that the substance is legal and addictive, Individual B is told that the substance is legal... do you think Individual A would approach the substance differently than Individual B? Personality traits and environmental pressures are not the only reasons an individual does things.

Legalization is not an effective method of deterring the use of a substance. It seems a tad stupid to compare a 16 year old's brain to a child's brain, or any other age bracket really.

-fin
Thales