HilgardE. R.MarquisD. G. (1940). Chap. 5. Conditioning and LearningNew York: Do Appleton Century107.
2.
HullC. L. (1943). Chap, 16. Principles of BehaviourNew York: D. Appleton Century299.
3.
MacphersonS. J.DeesV.GrindleyG. C. (1948). “The Effect of Knowledge of Results on Learning and Performance. II. Some Characteristics of Very Simple Skills.”Quart. J. Exp. Psychol1, 68.
4.
WoodworthR. S. (1938). Chap. 9. Experimental PsychologyNew York: Henry Holt211.