This is a reprint of a monograph by Beth L. Wellman (1895-1952) and Boyd R. McCandless (1915-1975) of the Iowa Child Welfare Research Station. It was published in 1946 as part of the Psychological Monographs series of the American Psychological Association (volume 60 #2). It is part of a longstanding study of changes over time in the IQ of young children who receive different levels of schooling.
References:
American Psychological Association, 1962 Directory, ed. James Q. Holsopple, Washington, D.C.: American Psychological Association, 1962, p. 470.
George, M., “Profile of Beth L. Wellman,” 2010, in A. Rutherford (ed.), Psychology's Feminist Voices Multimedia Internet Archive See http://www.feministvoices.com/beth-wellman, accessed March 26, 2020.
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