The gestures of the whole body do not exhaust the supply of signals informed  about the man emotional condition. Facial expression plays the large part for that is all changes, which can see on the human face. Detailed investigations over the expression of the face and her interpretation brought to assertion that about how much one can comparatively easily master the attitude of one’s body and gesticulation, and then to express them consciously chosen emotions, controlling the musculature of the face is very difficult about so many. That is why they prevail persons using the bluff often or manipulation over signals sent through the whole body, however they exercise the control of the word of the face in the special way.
Eyes are the „mirror of the soul” according to the popular saying. Although one can wash out what to the interpretation philosophic, then should admit, that through eyes and glance the age passes on many information about his state the emotion  anonym. One can less estimate this thanks to the glance someone as the person or more intelligent. The glance can also betray changing emotions in first order, e.g. anger or sadness.
You should pay the attention to the part of for the eye contact  because the of the information which the glance can pass on   during the conversation. The contact visualized with second person - seizing her glance - first contact is the most often  tem, entry in the interaction. Providing for this the contact under  the time of the conversation is also for the opposite side the signal to the transport, the symptom of attention and interest. That is why it during the of difficult negotiations conversations is taking care about the „open” glance which will signal the side worth he pushes  the certainty of our rights and frankness on the more far conversation. If we have to deal with from the difficult partner, which whole behavior - in this persistent strong glance - he tries us to dominate, then one can look him in the point between eyes. This will not let run away not the sight and to also regain somewhat the certainty oneself.
Except maintenance of the glance, he essential is also his length and intensity. In Arabian countries or he is frequent and long visual contact necessary to supporting the conversation, however avoidance of the glance can cultures be read as the lack. However persons mannered in the cultures of the Midnight usually treat the contact too frequent and too long as offensive.
This interesting is also that he also joins length and the frequency of glances with the type of the interpersonal report which sets between interlocutors.
Except eyes, second and equally important area for who  non - verbal are the mouth. The meaning of the smile is underlining in antihuman contacts worth in this moment. The smile - speaks on every the day though in the light exultation of the corners of the mouth - he is useful the whole the bright word brews, it is also the signal of frankness on second person, the desires of the co-operation, and not domination or escape. The experienced observers of different persons behaviors will look for the smile in first order even little. That is why belong in every situation, he does not favor this even the if internal mood, to reign over the bright word of the face and smile in  average contacts.
It is comparatively easily to recognize the false smile - he spreads after the face more slowly and usually lasts longer the than smile  fields the natural internal stimulus. The natural smile influences the facial expression of the whole face beyond this, especially the eyes which in such situation get narrower and mimic, so-called wrinkles, and „chicken little paws” appear in corners. To smile the person expectred.