The first nonverbal behavior that other people notice about an individual is body and facial expression.
Body expression is a term to refer to the set of body movements that denote an attitude or disposition towards a situation or person.
Body language is a way of defining how a person behaves in a given situation without listening to her opinion. On the other hand, bodily expression includes facial expression or gestures that reinforce the individual's expression in a specific situation.
According to the above, it is most likely that a person identifies the body and facial expression of an individual as the first behavior in different situations.
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