Anderson, D., Braddock, D. & Houle, P. A. Jr.UMST computer programs manual. University of Minnesota, 1968.
2.
Baumeister, A. A. & Ellis, N. R.Delayed response performance of retardates. American Journal of Mental Deficiency, 1963, 67, 714–22.
3.
Belmont, J. M. & Ellis, N. R.Effects of extraneous stimulation upon discrimination learning in normals and retardates. American Journal of Mental Deficiency, 1968, 72, 525–32.
4.
Ellis, N. R., Hawkins, W. F., Pryer, M. W. & Jones, R. W.Distraction effects in oddity learning by normal and mentally defective humans. American Journal of Mental Deficiency, 1963, 67, 576–83.
5.
Gellerman, L. W.Chance orders of alternating stimuli in visual discrimination experiments. Journal of Genetic Psychology, 1933, 42, 207–8.
6.
Gerwitz, J. L. & Baer, D. M.The effect of brief social deprivation on behaviors for a social reinforcer. Journal of Abnormal and Social Psychology, 1958, 56, 49–56.
7.
House, B. & Zeaman, D.Miniature experiments in the discrimination learning of retardates. In L. P. Lipsitt and C. C. Spiker (Eds.), Advances in child development and behavior. Vol. 1. New York: Academic Press, 1963. Pp. 313–74.
8.
James, W.Principles of psychology. New York: Henry Holt, 1830.
9.
Luria, A. R.The mentally retarded child. New York: Macmillan, 1963.
10.
Moon, L. E. & Harlow, H. F.Analysis of oddity learning by Rhesus monkeys. Journal of Comparative and Physiological Psychology, 1955, 48, 188–94.
11.
Ribot, T.The psychology of attention. London: Kegan Paul, 1890.
12.
Sen, A. & Clarke, A. M.Some factors affecting distractibility in the mental retardate. American Journal of Mental Deficiency, 1968, 73, 50–60.
13.
Stevenson, H. W. & Odom, R. D.The effectiveness of social reinforcement following two conditions of social deprivation. Journal of Abnormal and Social Psychology, 1961, 65, 429–31.
14.
Strauss, A. A. & Lehtinen, L. E.Psychopathology and education of the brain-injured child. New York: Grune and Stratton, 1947.
15.
Turnure, J. E.Children's reactions to distractions: A developmental approach. (Doctoral dissertation, Yale University) Ann Arbor, Mich.: University Microfilms, 1966. No. 66–4940.
16.
Turnure, J. E.Children's reactions to distractors in a learning situation. Developmental Psychology, 1970, 2, 115–22.
17.
Turnure, J. E. & Zigler, E.Outerdirectedness in the problem solving of normal and retarded children. Journal of Abnormal and Social Psychology, 1964, 69, 427–36.
18.
Walker, H. M. & Lev, J.Elementary statistical methods. (Rev. ed.) New York: Holt, Rinehart and Winston, 1958.
19.
White, S. H.Evidence for a hierarchical arrangement of learning processes. In L. P. Lipsitt and C. C. Spiker (Eds.), Advances in child development and behavior. Vol. 2. New York: Academic Press, 1965. Pp. 197–220.