BraenB. B.The measurement and validation of theoretically derived manifest rigidity in a group of college students. Unpublished doctoral dissertation, Syracuse Univer., 1955.
2.
EdwardsA. L.Manual for the Personal Preference Schedule.New York: Psychol. Corp., 1954.
3.
KolbeL. E., & EdgertonH. A.A table for computing biserialr. J. exp. Educ., 1936, 4, 245–251.
4.
KouninJ. S.Experimental studies of rigidity: I. Measurement of rigidity in normal and feeble-minded persons. Charact. & Pers., 1941, 9, 251–272. (a)
5.
KouninJ. S.Experimental studies in rigidity: II. Explanatory power of the concept of rigidity as applied to feeblemindedness. Charact. & Pers., 1941, 9, 273–282. (b)
6.
LeeperR. W.Lewin's topological and vector psychology: a digest and a critique.Eugene: Univer. of Oregon Press, 1943.
7.
LewinK.A dynamic theory of personality.New York: McGraw-Hill, 1935.
8.
LewinK.Principles of topological psychology.New York: McGraw-Hill, 1936.
9.
LewinK.The conceptual representation and measurement of psychological forces. Contr. Psychol. Theor. Monogr., 1938, 1, No. 4.