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Asymmetry in the discrimination of length during spatial learning

Kosaki, Yutaka, Jones, Peter M. and Pearce, John Martindale 2013. Asymmetry in the discrimination of length during spatial learning. Journal of Experimental Psychology: Animal Behavior Processes 39 (4) , pp. 342-356. 10.1037/a0032570

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Abstract

The ability of rats to solve a discrimination between two objects that differ in length was investigated in five experiments. Using a rectangular swimming pool, Experiment 1 revealed it is easier to locate a submerged platform when it is near the center of a long rather than a short wall. For Experiments 2–4, the objects were black or white panels pasted onto the gray walls of a square pool, with two long panels pasted to two opposing walls and two short panels pasted to the remaining walls. The platform was easier to locate when it was placed near the middle of a long rather than a short panel. This effect was found when the long panels were twice (Experiments 2–4) or four times the length of the short panels (Experiment 4). Experiment 5 demonstrated that rats can solve a discrimination between panels of length 15 and 45 cm more readily than when they are 70 and 100 cm. The results are consistent with the claim that generalization gradients based on stimulus magnitude are steeper for stimuli that are weaker rather than stronger than the stimulus used for the original training.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Publisher: American Psychological Association
ISSN: 1939-2184
Last Modified: 04 Jun 2017 06:08
URI: http://orca.cf.ac.uk/id/eprint/56783

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