The treatise is devoted to the central principles of J. A. Komenský's thinking with emphasis on the theory of behaviour of a child and its value for the psychological conception of a child and the learning. The genetic psychology elements, the grading of the development, the discussing of the relation between the learning and the psychological development are being marked here. A very interesting part of Komenius’s psychological opinions is that of drafting the child’s behaviour as one objectively and instrumentally orientated.
In the conclusion the main features of the mutual relations among the categories of the psychological activity, the development and the learning in Komenský's doctrine are summarized.