Collected Works of C.W. Valentine The Psychology of Early Childhood: A Study of Mental Development in the First Years of Life, (Hardcover)

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.