References
- Boice , R. 1966 . Methodological considerations and the discrimination learning deficit in the severely retarded . J. genet. Psychol. , 109 : 163 – 7 .
- Broadbent , D. E. 1958 . Perception and Communication , Oxford : Pergamon .
- Bryant , P. 1965 . The transfer of positive and negative learning by normal and severely subnormal children . Br. J. Psychol. , 56 : 81 – 6 .
- Crossman , E. R. F. W. 1955 . The measurement of discriminability . Q. Jl exp. Psychol. , 7 : 176 – 95 .
- Eninger , M. U. 1952 . Habit summation in a selective learning problem . J. comp. physiol. Psychol. , 45 : 511 – 6 .
- O'Connor , N. and Hermelin , B. 1963 . Speech and Thought in Severe Subnormality , Oxford : Pergamon .
- Posner , M. I. 1966 . Components of skilled performance . Science, N. Y. , 152 : 1712 – 8 .
- Restle , F. 1955 . A theory of discrimination learning . Psychol. Rev. , 62 : 11 – 9 .
- Shepp , B. and Zeaman , D. 1966 . Discrimination learning of size and brightness by retardates . J. comp. physiol. Psychol. , 62 : 55 – 9 .
- Sutherland , N. S. 1959 . “ Stimulus analyzing mechanisms ” . In Proceedings of a Symposium on the Mechanization of Thought Processes , Vol. 2 , London : H.M.S.O. .
- Sutherland , N. S. 1966 . Successive reversals using two cues . Q. Jl exp. Psychol. , 18 : 97 – 102 .
- Sutherland , N. S. and Holgate , V. 1966 . Two-cue discrimination learning in rats . J. comp. physiol. Psychol. , 61 : 198 – 207 .
- Sutherland , N. S. and Mackintosh , J. 1964 . Discrimination learning: non-additivity of cues . Nature, Lond. , 201 : 528 – 30 .
- Wachtel , P. L. 1967 . Conceptions of broad and narrow attention . Psychol. Bull. , 68 : 417 – 29 .
- Zeaman , D. and House , B. J. 1963 . “ The role of attention in retardate discrimination learning ” . In Handbook of Mental Deficiency; Psychological Theory and Research , Edited by: Ellis , N. R. New York : McGraw Hill .