View Single Post
Jan13-12, 10:33 AM
Sci Advisor
PF Gold
Monique's Avatar
P: 4,642
Quote Quote by SW VandeCarr View Post
I can't speak to the survey you're citing, but in general surveys of this type tend to underestimate actual usage, at least in countries where marijuana is illegal.
The statistics that I cited is for condoned cannabis use in Amsterdam, statistics for San Francisco are very similar (see graph). The percentages match my personal observations, although I agree that self-reported observations are not as reliable as actual measurements.