Probably "What" should be "Which". The sentence should begin with a capital letter. Consider whether "specification of human behaviour and habits" is better.
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khoshtip Thank you. About the word "specification", what if I change it with "characteristics"? Isn't it more clear this time?On the fact of it, "characteristic(s)" seems more likely. It is not possible to be certain without more information about what kind of things you are talking about.