Question

how can we understand a person's psychology or his behaviour without talking with him/her

Answer 1

we can understand a person's psychological or his behaviour without talking with him or her by his behave by his behaviour whatever he is doing in what way he or she is behaving to some another person and what is his choice what he wants to do and by his mind and by his concentrations we can identify that a person we can identify the person's psychological behaviour

Answer 2

We can understand a person's psychology or his behaviour without talking with him/ her by the way he speaks to other and his voice is slow or loud, and by the teacher, the way she/he react on the matter, by the way of his/her eating, by the way of his/ her attitude is he / she proudy and the of his/ her towards you and others. Or by she believes in equality, etc.
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