[Pittsburgh] : Learning Research and Development Center, University of Pittsburgh, 1971
Physical Details
625-670 pages : illustrations ; 27 cm
OCLC
ocn223222470
"Reprinted by permission from Educational Measurement, Robert L. Thorndike, editor. Second Edition: chapter 17, pages 625-670. Copyright 1971 by American Council on Education, Washington, D.C."
Includes bibliographical references (pages 667-670)