Effect of presence of different partners (age-peer, tutor, mother) on voluntary memory in 4-6 years old children was experimentally studied. It has been found out that independent of age the memory of children is most efficient in the presence of their tutor. Older children accept seriously all kinds of tasks in the presence of any adult, while the presence of age-peers has as a rule a negative effect. Middle-level children memorize less efficiently both in the presence of age-peers and of their mother. Some peculiarities in the behavior of children which influence different characteristics of the voluntary memory have been also revealed.