Abstract
Eight rabbits were conditioned to blink to a 90-dB tone (20 dB above 70-dB white-noise background). After asymptotic performance was apparent, test sessions were given in which high- (20 dB) and low-(5 dB) intensity tones were used as CSs. Within- and between-day contrasts of the two intensities were compared. Performance was superior with the high-intensity CS in both conditions, but the magnitude of the CS intensity effect was greatest when the two tones were contrasted within the same session.
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This research was supported in part by the Graduate Research Committee of Northwestern University.
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Frey, P.W. Within- and between-session CS intensity performance effects in rabbit eyelid conditioning. Psychon Sci 17, 1–2 (1969). https://doi.org/10.3758/BF03329135
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DOI: https://doi.org/10.3758/BF03329135