BRUNER, J. S. , GOODNOW, J. J. & AUSTIN, G. A. (1956). A study of thinking. New York: Wiley .
2.
FELDMAN, J. (1963). Simulation of behavior in the binary choice experiment. In: Feigenbaum, E. A. & Feldman, J. (eds), Computers and thought. New York: McGraw-Hill .
3.
GOLD, M. M. & STEDRY, A. C. (1964). The effect of role-playing in a problem solving situation. Industrial management review.
4.
JENKINS, W. O. & STANLEY, J. C., Jr. (1950). Partial reinforcement: a review and critique . Psychological bulletin47.
5.
KELLER, F. (1954). Learning: reinforcement theory. New York: Random House .
6.
MORGAN, C. T. (1961). Introduction to psychology, 2nd Ed.New York: McGraw-Hill .
7.
ORNE, M. (1962). On the social psychology of the psychological experiment: with particular reference to demand characteristics and their implications . American psychologist14.
8.
OSGOOD, C. E. , SUCI, G. J. & TANNENBAUM, P. H. (1957). The measurement of meaning. Urbana: University of Illinois Press .
9.
SIEGEL, S. (1956). Nonparametric statistics: for the behavioral sciences. New York: McGraw-Hill .
10.
SKINNER, B. F. (1938). The behavior of organisms: an experimental analysis. New York: Appleton-Century-Croft .