The subject that is treated in this volume has engaged a large part of the attention, not only of psychologists and educationists but also of laymen. It is argued that if nature really endows some children intellectually much more generously than she does others--and the data presented in this volume will convince any fair-minded person that this is the case--the fact is of importance to those who are interested in social advancement as well as to those teachers and parents who are striving to do the best they can for each individual committed to their care. A large amount of scientific material is included in this book; but it is presented in a straightforward, clear, interesting manner; and it may be predicted that this volume will be read easily and with complete comprehension by parents, teachers, and laymen as well as by students of human development and of education. (PsycINFO Database Record (c) 2004 APA, all rights reserved).