ABSTRACT
A human being survives to the extent that he adapts to an environment which presents him, at the same time, with the necessary materials for the satisfaction of his needs and the danger of destruction. An adapted human being is capable of judging if the reality situation is favourable to him or unfavourable, and the action taken will have the aim of changing the situation into a better one. Biological immaturity affects the organs of motor activity and limits indirectly the range of information to which a child has access. The imprecision of sensorimotor coordination adds to the spatial limitations of the field of activity, thus making it difficult to establish the laws of correspondence between the child’s own actions and the reciprocal modifications of the environment. The very earliest child psychologists sought to define the child’s visual world – in what respects it differed from that of the adult and how it changed as the child grew older.
