A very detailed paper based on the close observation of a neighbour's child, whom the author had the opportunity of watching closely for years. It is shewn how a psycho-analytical education, strict adherence to the sexual truth, the avoidance of a too violent repression, further a child's development. The child in question is a normal, rather slow little boy. With the apprehension of sexual phenomena many of his little symptoms disappear and his sense of reality gets stronger. The author discusses the advantages and difficulties of analysing small children who—according to her opinion—mostly want an analytical talking over of their problems. The plan of a Kindergarten directed by teachers trained in psycho-analysis is advocated.