2001'3, p.17
Venger A. L.
Mental development of children in the process of joint activity

Joint activity of a child and an adult is determined by a socially defined content, functions of the participants and their functioning (each participant's contribution to the activity). The child mind develops to ensure his functioning in the joint activity. The article specifies the time of emergence of such regulatory functions as motive, goal, task, understanding of the meaning of one's actions, I-image, self-awareness, psychological future, life meaning.