Abstract
Rats were trained to bar press on a continuously reinforced avoidance schedule and then shifted to a fixed ratio avoidance schedule. All Ss acquired and maintained the continuously reinforced avoidance response without a decrement over the 17 day pre-ratio period. A fixed ratio avoidance schedule of 4∶1 was also attained by all Ss but only three Ss were able to perform on fixed ratio avoidance as high as 8∶1. Comparisons between the shuttle avoidance and bar press avoidance responses were made and possible variables affecting the size of the ratio discussed.
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This investigation was supported in part by grant MH 08960-01A1.
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Badia, P. Fixed Ratio Discriminative Avoidance Responding. Psychol Rec 15, 445–448 (1965). https://doi.org/10.1007/BF03393613
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DOI: https://doi.org/10.1007/BF03393613