THE KALLIKAK FAMILY [Illustration: The MM Co.] THE MACMILLAN COMPANY NEW YORK · BOSTON · CHICAGO DALLAS · SAN FRANCISCO MACMILLAN & CO., LIMITED LONDON · BOMBAY · CALCUTTA MELBOURNE THE MACMILLAN CO. OF CANADA, LTD. TORONTO [Illustration: DEBORAH KALLIKAK, AS SHE APPEARS TO-DAY AT THE TRAINING SCHOOL.] THE KALLIKAK FAMILY A STUDY IN THE HEREDITY OF FEEBLE-MINDEDNESS BY HENRY HERBERT GODDARD, PH.D. _Director of the Research Laboratory of the Training School at Vineland, New Jersey, for Feeble-minded Girls and Boys_ New York THE MACMILLAN COMPANY 1916 _All rights reserved_ COPYRIGHT, 1912, BY THE MACMILLAN COMPANY. Set up and electrotyped. Published September, 1912. Reprinted February, 1913; February, 1914; September, 1916. _Norwood Press J. S. Cushing Co.--Berwick & Smith Co. Norwood, Mass., U.S.A._ To MR. SAMUEL S. FELS A LAYMAN WITH THE SCIENTIST’S LOVE OF TRUTH AND THE TRUE CITIZEN’S LOVE OF HUMANITY WHO MADE POSSIBLE THIS STUDY AND WHO HAS FOLLOWED THE WORK FROM ITS INCIPIENCY WITH KINDLY CRITICISM AND ADVICE THIS BOOK IS DEDICATED PREFACE On September 15, 1906, the Training School for Backward and Feeble-minded Children at Vineland, New Jersey, opened a laboratory and a Department of Research for the study of feeble-mindedness. A beginning was made in studying the mental condition of the children who lived in the Institution, with a view to determining the mental and physical peculiarities of the different grades and types, to getting an accurate record of what deficiencies each child had and what he was capable of doing, with the hope that in time these records could be correlated with the condition of the nervous system of the child, if he should die while in the Institution and an autopsy should be allowed.