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"...and they were asked about marijuana use periodically between those ages." Perhaps there was a problem with remembering the amount used?
Keep toking! Leave the good paying jobs that require thinking and motivation to the rest of us!
Well, if you smoke a lot of pot, I imagine you SES will decline...so I don't see where that could possibly rule out a decline in IQ from marijuana use.
Socioeconomic status is a good predictor of success, life expectancy, and IQ. These are well known associations.
I don't know much of anything about pot. But, I suppose if you smoke joints the size of the one in the picture on a regular basis ... well, you probably be so stewed you wouldn't have much use for an IQ anyway ... I didn't know people rolled 'em the size of railroad spikes!
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