Originally published in 1933, this volume was the result of many years’ careful first-hand study of child psychology enriched by the author’s unusually wide experience in dealing with the subject with students. It was intended to follow the development of children from infancy to adolescence, but was cut short due to the author’s untimely death. The book makes available the results of modern experimental work of the time, much of which was published in scattered journals. Chapters deal with the development of sensory and muscular control, including walking and talking, and with the development of the intellectual, emotional and social life of children up to three years of age. A pioneer in the development of experimental psychology Hazlitt’s work can now be enjoyed again in its historical context.