Letter | Published:

Chemical Transfer of Learned Preference

Nature volume 222, pages 10791080 (14 June 1969) | Download Citation

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Abstract

IT has been reported1–2 that the natural preference of mice for the dark can be reversed by injection of brain extracts taken from donors trained to avoid a black box. This effect was considered to represent a "transfer of learned fear". The possibility remained, however, that the apparent transfer was caused by a substance produced in response to the stress of repeated shocking rather than as a result of learning. A test was therefore carried out to see whether a similar transfer could be obtained with extracts from donors trained to prefer a white box using positive reinforcement.

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References

  1. 1.

    , and , Psychon. Sci., 8, 369 (1967).

  2. 2.

    , , and , Nature, 217, 1259 (1968).

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Affiliations

  1. Department of Anesthesiology, Baylor College of Medicine, Houston, Texas.

    • E. J. FJERDINGSTAD

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  1. Search for E. J. FJERDINGSTAD in:

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DOI

https://doi.org/10.1038/2221079a0

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