The first results of longitudinal study based on El'konin - Davydov's educa
tive system show which individual features assist and which oppose particip
ation in joint learning activity. The method of the study employs marking o
ut of typological groups accordingly to interpsychic learning action charac
teristics and the evaluation of children's (included in qualitatively diffe
rent groups) prevailing personal and intellectual features. It is demonstra
ted that the number of real subjects of learning activity after two years o
f education has doubled. These children differ from their classmates by two
characteristics: non-verbal factors in their intellectual profile are more
pronounced than verbal ones; the children possess the trend to self-change
.