1991'6, p.38
Tkacheva L. F.
Psychological peculiarities of Russian language mastering by Ukrainian children in bilinguistic situation

Psychological prerequisites for non-Russian-speaking children's mastering of Russian are: 1. It is necessary to begin learning in the age of 5-6, when the possibilities of phonematic hearing development are the best. 2. The methods of comparison and altering contraposition of orthographic matter differing in Russian and Ukrainian must be used. 3. necessary to take into account the fact of transfer and interferention of knowledge, skills and habits.