Suckling as incentive to instrumental learning in preweanling rats

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Science  20 May 1977:
Vol. 196, Issue 4292, pp. 898-899
DOI: 10.1126/science.860121


Neonatal rats as young as 7 days of age learned, reversed, and retained a left-right discrimination with a nonlactating nipple as the incentive. These results have implications for the ontogeny of associative processes and for their neurological and neurochemical mediators.