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By Roger T. Davis, Leonard A. Rosenblum

ISBN-10: 0125340036

ISBN-13: 9780125340038

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Transfer testing involved presenting every animal with variable stimuli between 20 and 90 cm 2 intermixed with the large and small standard stimuli. As in training, the sample was matched to a large stimulus on one side and a small one on the other, interchanging left- and right-hand positions in a random order. Half of the human 5s were given each stimulus size on eight different 38 III. SPACE PERCEPTION occasions in a different random order and instructed to assign Ranks 1 through 10. The other half made a dichotomous judgment of small or large with stimuli 10-100 cm after the smallest and largest stimuli were presented as standards.

Ill-1. The tall cylinder is singly represented and reinforced. 25-inch steps on succeeding critical trials from identity with one of the standards to identity with the other. For example, when the variable object was identical to the short standard on the first critical trial, the tall standard was singly represented and selected by 5 as the odd object. On subsequent transfer trials the variable center object became increasingly similar to the tall standard. As the variable stimulus became intermediate between the height of the short and tall standards, S vacillated (VTEed) then shifted.

II-5a. Visual scanning shown by nine stumptail monkeys in their home cages and under two conditions of novelty. The subjects were observed under each condition for four consecutive days. In Chang-Yit (1968). 60 < 50 τ—i—r Ί—I—Γ T 1 1—Γ , I st PERIOD i 2nd PERIOD -I < 40 30 20 Ld 10 < LU

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Monkeys As Perceivers by Roger T. Davis, Leonard A. Rosenblum

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