TY - JOUR
AU1 - McNemar, Quinn
AB - In this critical examination of the University of Iowa studies of environmental influences upon IQ, the author first examines in some detail the orphanage preschool project of Skeels, Updegraff, Wellman, and Williams, and then scrutinizes the foster children study of Skodak and Skeels. Other studies are also briefly considered, and the author devotes a section to a type of statistical treatment which is common to all the IQ studies of the Iowa Child Welfare Research Station. In this critical examination of the studies on IQ changes, the author raises specific questions concerning definite methodological and statistical inadequacies. He finds much of the supposed evidence for environmental influences on the IQ to be entirely nonexistent. The author also expresses two personal opinions. First, in view of the fact that he discovered startling inadequacies in those studies reported in monographic detail and in view of the fact that it was not until the original data were secured that he was able properly to evaluate--in this case demolish--the evidence based on the orphanage preschool project, he is strongly skeptical as to the dependability of the results which have been reported all too briefly in the shorter papers. Second, if it is the responsibility of the scientist to establish, and the educator to disseminate, truths, then the scientists who have turned educators should take the responsibility for dispelling error, especially that which has been the result of their own hasty promulgation of unverified and largely invalid research results.
TI - A critical examination of the University of Iowa studies of environmental influences upon the IQ.
JF - Psychological Bulletin
DO - 10.1037/h0051468
DA - 1940-02-01
UR - https://www.deepdyve.com/lp/american-psychological-association/a-critical-examination-of-the-university-of-iowa-studies-of-WSsuRz00ig
SP - 63
EP - 92
VL - 37
IS - 2
DP - DeepDyve
ER -