ladajo wrote:Micheal,
I have never said I agree with the current methodology for control. I have stated many times it is not working. That said, I also maintain that free access is idiotic.
The current method of "control" is nothing but free access.
I liked this comment from:
http://www.cbsnews.com/8601-504763_162- ... entWrapper
Skimming over the paper and its supplements, it appears that some kind of statistically significant effect has been documented. It would be nice to have seen a breakdown of amount of cannabis used or frequency of use to see if there was any "dose dependency" to the effect shown. That is a basic piece needed even in association studies that this study did not do. Also,
the attempt to control for other variables did not seem very strong. First, it was strictly based on self-report (even though the cognitive findings were bolstered by statements for close contacts). Second, there was only talk about alcohol dependence, not about binge patterns, which have also been shown to be neurotoxic. Schizophrenia was considered, but what about other mental illnesses such as major
depression, anxiety, PTSD, etc., all of which can reduce performance on neurocognitive tests. There was no consideration for traumatic brain injuries such as concussions, etc., which can reduce cognitive performance. And certainly, there is no neuroimaging data or any other attempt to present any physiological/neurochemical/anatomical correlates to what was seen.
So, yes, there's an association, but it is hard to say what actually has caused it.
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So you have to ask yourself is marijuana the cause of the lowered brain function or an attempt at self medication for brain problems? It would be nice if OFs looked at these "studies" with scepticism. As they would with physics reports. Rider say.
Faith makes believers out of a lot of people who are quite good in other realms. As I said above. The mere mention of dope seems to have the power to make people stupid. Which means I have been consistently lowering the IQs of a significant fraction of the commenters here. My condolences.