The Psychology of Early Childhood: A Study of Mental Development in the First Years of Life (Paperback) (ISBN-13: 9781138899452)

Originally published in 1942, this title attempted to trace, from their very earliest appearances after birth, all aspects of mental development in childhood up to the age of about 4 or 5. It is based largely on the author's almost daily observations of his own five children, over a period of some twenty years, supplemented by numerous tests and experiments.