At what age, in what form, under what conditions does the creative imagination make its appearance? It is impossible to answer this question, which, moreover, has no justification. For the creative imagination develops little by little out of pure reproduction by an evolutionary process, not by sudden eruption. Nevertheless, its evolution is very slow on account of causes both organic and psychological. We could not dwell long on the organic causes without falling into tiresome repetitions. The new-born infant is a spinal being, with an unformed diffluent brain, composed largely of water. Reflex life itself is not complete in him, and the cortico-motor system only hinted at; the sensory centers are undifferentiated, the associational systems remain isolated for a long time after birth. We have given above Flechsig's observation on this point. The psychological causes reduce themselves to the necessity for a consolidation of the primary and secondary operations of the mind, without which the creative imagination cannot take form. To be precise, we might distinguish, as does Baldwin, four epochs in the mental development of the child: (1) affective (rudimentary sensory processes, pleasures and pains, simple motor adaptations); (2) and (3) objective, in which the author establishes two grades, (a) appearance of special senses, of memory, instincts primarily defensive, and imitation; (b) complex memory, complicated movements, offensive activities, rudimentary will; (4) subjective or final (conscious thought, constitutive will, ideal emotions). If we accept this scheme as approximately correct, the _moment_ of imagination must be assigned to the third period (the second stage of the objective epoch) which fulfills all the sufficient and necessary conditions for its origination and for its rise above pure reproduction. Whatever the propitious age may be, the study of the child-imagination is not without difficulties. In order to enter into the child-mind, we must become like a child; as it is, we are limited to an interpretation of it in terms of the adult, with much false interpretation possible, agreeing too much or too little with the facts. Furthermore, the children studied live and grow up in a civilized environment. The result is that the development of their imagination is rarely unhampered and complete; for as soon as their fancy passes the middle level, the rationalizing education of parents and teachers is eager to master and control it. In truth it gives its full measure and reveals itself in the fulness of growth only among primitive peoples. With us it is checked in its flight by an antagonistic power, which treats it as a harbinger of insanity. Finally, children are not equally well-suited for this study; we must make a distinction between the imaginative and non-imaginative, and the latter should be eliminated.