Abstract
An experiment was conducted to measure the effect of UCS intensity, in the classical fear conditioning situation, on long-term retention. White rats were conditioned at high (2.63 mA) and medium (.83 mA) UCS intensities and were tested for retention 2 weeks and 2 months later. The results of the experiment indicated that the magnitude of the classically conditioned fear response decreases 2 weeks after original conditioning, but that there is little further decrement after the original conditioning session. The original fear conditioning session produces a relatively stable level of fear that shows some dissipation, with time, at the medium UCS intensity level. Some fear remains, however, as long as 2 months after the original conditioning session.
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Goldstein, M.L. The effect of UCS intensity on the long-term retention of a classically conditioned fear response. Bull. Psychon. Soc. 13, 357–358 (1979). https://doi.org/10.3758/BF03336894
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DOI: https://doi.org/10.3758/BF03336894