References
- Bernhardt , K. S. and Snygc , D. 1937 . The effect of cues on the choice of the shorter part . J. Camp. Psychol , 24 : 269 – 276 .
- Cowles , J. T. 1937 . Food-tokens as incentives for learning by chimpanzees . Comp. Psychol. Monog , 14 ( 5 ) : 96
- Cowles , J. T. and Nissen , H. W. 1937 . Reward-expectancy in delayed responses of chimpanzees . J. Comp. Psychol , 24 : 345 – 358 .
- Heron , W. T. 1934 . Comparative Psychology , Edited by: Moss , F. A. 529 New York : Prentice Hall .
- Honzik , C. H. 1931 . Delayed reaction in rats . Univ. Calif. Publ. Psychol , 4 : 307 – 318 .
- Hunter , W. S. 1913 . The delayed reaction in animals and children . Behav. Monog , 2 ( 1 ) : 86
- Maier , N. R. F. 1929 . Delayed reaction and memory in rats . J. Genet. Psychol , 36 : 538 – 550 .
- Maier , N. R. F. and Schneirla , T. C. 1935 . Principles of Animal Psychology , 529 New York : McGraw-Hill .
- McCulloch , T. L. 1939 . The role of clasping activity in adaptive behavior of the infant chimpanzee: I. Delayed response . J. of Psychol , 7 : 283 – 292 .
- Nissen , H. W. and Elder , J. H. 1935 . The influence of amount of incentive on delayed response performance of chimpanzees . J. Genet. Psychol , 47 : 49 – 72 .
- Nissen , H. W. , Riesen , A. H. and Nowlis , V. 1938 . Delayed response and discrimination learning by chimpanzees . J. Comp. Psychol , 26 : 361 – 386 .
- Nissen , H. W. and Taylor , F. V. 1939 . Delayed alternation to non-positional cues in chimpanzee . J. of Psychol , 7 : 323 – 332 .
- Tolman , E. C. 1932 . Purposive Behavior in Animals and Men , 463 New York : Century .
- Wilson , M. O. 1934 . Symbolic behavior in the white rat: I. Relation of amount of interpolated activity to adequacy of the delayed response . J. Comp. Psychol , 18 : 29 – 49 . II. Relation of quality of interpolated activity to adequacy of the delayed response. Ibid., 367–384