This antiquarian volume contains three essays on the subject of child development, written by Arnold Lucius Gesell. This fascinating collection contains a wealth of interesting and useful information - on the biological, psychological and emotional changes that occur in human beings between birth and adolescence. It will be of particular utility to those with an interest in the history of developmental psychology. Arnold Lucius Gesell (1880 - 1961) was a psychologist and pediatrician who significantly contributed to the field of child development. Many old works such as this are becoming increasingly hard-to-come-by and expensive, and it is with this in mind that we are republishing this text now in an affordable, modern edition - complete with a specially commissioned new biography of the author. This volume was first published in 1947.