Still very young, the child may be the makings of a manipulator. Ensuring parents fulfil their desires, he uses such measures of psychological impact, as a storm of weeping, hysterical, rolling on the floor. All this "performance" takes place optionally in the presence of the "audience", which is played. In solitude hysterical child immediately terminated. This suggests that he is easily controlled by the expression of their emotions and uses them only when he needs it.
Being older, the child tries to manipulate their peers. So, the girl, not wanting to come to visit her friend touched her toys, warn them that the doll is sick, and Teddy bear bite. Thus, it achieves its goals, not revealing their true motive is greed, which is frowned upon already in the children's community.
Of course, children's attempts of manipulation is quite transparent and does not represent a real danger to others. But the manipulation often employed adults, full-fledged people. Signs of this type of impact is largely remain the same – hiding the true motives, feigned expression of emotions. Moreover to this is added the belief of the victim (and in the case of manipulation it is possible to speak about the victim) that the manipulator is acting solely in its interests, although in fact it turns out just the opposite.