Abstract
Twelve monkeys were given a discrimination between black vertical and white horizontal rectangles and then given preference tests with original positive and negative stimuli paired with white vertical, black horizontal, white and black diagonal rectangles, and white and black circles. Ss responded more to circles than to other preference stimuli early in preference testing but less later, suggesting a novelty effect. Preference for the reinforced brightness was significantly higher than for the reinforced orientation.
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This research was supported by Grant GB-13100X from the National Science Foundation and Grant MH-07147-05 from the National Institute of Mental Health.
Formerly Roseann Mumma.
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Weber, R., Kamback, M. Two-cue discrimination learning by pigtail monkeys. Psychon Sci 20, 269–270 (1970). https://doi.org/10.3758/BF03329060
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DOI: https://doi.org/10.3758/BF03329060