Eric Berne. Games people play (№ 395389)

Numerous clinical data clearly show that the germ of the game is imitation, and that it originally created for Adults (neapsigausi) aspect of a child's personality. If in the adult the player manages to enliven as I Child, this component of personality (the Adult within the Child adult) that finds this psychological skill and ability to manipulate people that psychiatrists are respectfully call him a Professor (of psychiatry).