Rastafarians have been using marijuana for thousands of years. Even mothers would smoek while pregant. Is everyone who is Rastafarian retarded? Well the simple answer is no.
No, I wasn't bragging about being arrsted. Being arested is horrible they make you feel like an animal.
Cruel, the studies you speak of are focused on the first 5-10 years of a childs life including while being still unborn. There are many things that can effect a childs devlopement mental and in so many others ways. Of course IQ is total constant. Theyre are many things that could lower it. But, these things would have to be drastic. Smoking marijauna isnt going to lower your IQ. Neither is reading a book. Now, if I took a hammer to your head and bea tin your skull. I'm sure it would cuase you brain damage. If I inhaled gasoline fumes It might cuase brain damage. If you want soires, just pick up any recent encopedia.
I'm sorry viper but, you cannot classify marijauna, tobacco and herion all in the same group.
If marijuana is used in a responsible matter, exspecially if it is eaten instead of smoked, and not abused. I see no 'bad' affects.
I only support the use of entheogens, they were put on earth naturally by god. For the use of human kind. Asprin is natural. You take a little in moderation it helps you. You take it everyday unresponsiblly it kills you.
*EDIT* Also cruel the flynn efect or the flynn/dickens effect/models is the study of how heritity affects IQ. Of course it does.
But, once the brain is fully devloped the ability to creat such effects is reduced. These effects in early childhood cuase permant effects. A child with great nurition and great family life,health. Will have a higher IQ.
You can take an adult put them in the best conditions and YES. Their brain wil funcution better. But as soon as you take away the factors they return to their normal status.
Taken from Wikipedia:
environmental stimulus can have a very large effect on IQ, even in adults, but this effect also decays over time unless the stimulus continues .
the model could be adapted to include possible factors, like nutrition in early childhood, that may cause permanent effects