KefauverG. N. “The validity of bases for forming ability groups.” Teachers College Record, 31: 1929, 99–114.
11.
McGaughyJ. R. “Some vital considerations in homogeneous ability grouping.” Addresses and Proceedings, National Education Association, 1932, 139–141.
12.
McGaughyJ. R. “Fallacies in homogeneous grouping.” Department of Superintendence of the National Education Association, Official Report, 1932, p. 210.
13.
SauvainW. H.A Study of the Opinions of Certain Professional and Non-Professional Groups Regarding Homogeneous or Ability Grouping (New York: Teachers College, Columbia University, Contributions to Education, No. 596, 1934).
SorokinP. A., ZimmermanC. C., and GalpinC. J.Systematic Source Book in Rural Sociology (University of Minnesota Press: Minneapolis, Minnesota, 1930, 645 pp.), Vol. I.
16.
SymondsP. M. “Homogeneous grouping.” Teachers College Record, 32: 1931, 501–517.
17.
WallisW. D. “The independence of social psychology.” Jour. Abn. Psy., 20: 1925–26, 147–151.
18.
WestParl. A Study of Ability Grouping in the Elementary School (New York: Teachers College, Columbia University, Contributions to Education, No. 588, 1933).