You’re saying that higher doses necessarily mean a completely opposite effect?
It certainly wouldn't be a first, and the difference in dosage is huge - three or four orders of magnitude. Also, the study evaluated the impact of ultra-low dosages ofTHC on the damage done by specific neural stressors; to claim that it speaks in any way to the effects of recreational use in a population that doesn't have those stressors is just wrong. One might say you'd have to be smoking something to believe it.
Oddly enough, something that you
can validly say that that study confirms is that the effects of THC on neural development last
weeks longer than the subjective feeling of being high, even if you smoked only a ten-thousandth of what it takes to get high.
So many highly intelligent and accomplished people smoke pot. Lots of doctors, attorneys, and professors are recreational users. Only heavy users seem to have cognitive issues.
If you're buzzed, then by definition your neural plasticity is acutely impaired. The half-life in your system is seven to 20 days, so if you're smoking the stuff more than once or twice a month (that study actually indicates over seven weeks) your system doesn't have a chance to recover which means the impairment is chronic.
This has nothing to do with how intelligent you are, it's the nature of the chemical. The only thing that intelligence gets you is you can lower it more before people notice, and the
last person to notice will be the guy doing it. Next to last will be his friends who are also doing it.
I'm willing to bet a lot of money that no one here does a ten-thousandth of a hit, once every seven weeks.
And BTW, you might want to take a look at this study, which was immediately linked on the abstract page of the one above:
Long-term cognitive deficits induced by a single, extremely low dose of tetrahydrocannabinol (THC): behavioral, pharmacological and biochemical studies in mice.