Serotonin and behavior

Seoronin has no relationship to IQ. It definitely plays a role in pathological fears, anxiety etc. But it will be too simplistic to manipulate just one variable (level of a neurotransmitter) alone to modify man's behavior. The underlying reasons for any specific behavior will be more complex.

We are mostly talking of association when we speak of neurotransmitter levels etc to specific behaviors. It will not be correct to assign causative role to every phenomena associated with a specific behavior. We need to find out the definite cause that is both the 'necessary and sufficient' condition for the behavior in question. For this we need more precise tools. I happily share the optimism of Sashi. I thank Sashi and Ajeesh for their comments.