[JustSayNoToNannies]

If it doesn’t cause it, then how can there be a correlation between the two?

http://en.wikipedia.org/wiki/Correlation_does_not_imply_causation#Examples_of_illogically_inferring_causation_from_correlation

If susceptible peopel are not infact affected’ except in rare cases’ like you suggest, then the evidence showing a ‘strong relationship’ is either false, or mis-quoted-

Wrong - the strength of the relationship is the size of the correlation coefficient, which has nothing to do with the magnitude of the effect. If all test subjects who take chemical Z grow in height by exactly 0.001 inches, that's a maximum strength of relationship but a low magnitude of effect.

if someoen wasn’t experiencign psychotic events until using pot or lsd or hwatever, and started experiencign htem when using the drugsm, and stopped experiencign htem psychotic events when they stopped gthe rrugs again

No such longitudinal studies have been done.

[CottShop]

[[No such longitudinal studies have been done.]]

Then the quote you posted abotu hte strong relationship wasn’t given based on studies?

[[Wrong - the strength of the relationship is the size of the correlation coefficient, which has nothing to do with the magnitude of the effect.]]

Now wer’e talking abotu hte magnitude of psychotic events? It’s hard following you because hte goal post seems to keep moving- if people who tend ot experriencve psychotic events infrequently take drugs, and experience the events mroe frequently,. how i nthe workld can that not infacvt mean that the drugs have an effect on psychotic events?