Love your ressearch, and thank you for doing it so we don't have to re-invent the wheel. I would like to throw something on for peopal to chew on a bit. I work as an alternative energy practitioner, mainly working within the etheric body with beliefs and thought patterns that shape our reality. I am finding myself having to help people reverse the ' just say no' beliefs that they have been raised on - they have this belief as you describe above - then smoke pot anyway - and this screws them up bigtime, causing the beliefs to become true within thier reality. Meaning, because they believe pot makes them lazy - it does.....
I think this is a REAL issue as we recognize pot as a medicine - we also have to work on subconscious beliefs that we have about it so that it doesn't manifest within our lives.