The author begins with an account of the development of analytic child psychology, its techniques and its sources in child and adult analysis and direct observation of the child. She then describes the course of normal development, how it can be hindered or eased, what are the unavoidable stresses and strains and how variations of normality occur. She outlines a scheme for assessing normality and for gauging and classifying pathological phenomena in terms of the obstruction of normal progress rather than the severity of symptoms. Stress is laid on the problem of predicting the outcome of infantile factors for adult pathology in the face of the child's continual development. Finally, child analysis is considered both as a therapeutic method and as a means for the advance of knowledge