Journal
ANIMAL COGNITION
Volume 6, Issue 2, Pages 105-112Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10071-003-0167-x
Keywords
numerical discrimination; salamander; number
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Techniques traditionally used in developmental research with infants have been widely used with non-human primates in the investigation of comparative cognitive abilities. Recently, researchers have shown that human infants and monkeys select the larger of two numerosities in a spontaneous forced-choice discrimination task. Here we adopt the same method to assess in a series of experiments spontaneous choice of the larger of two numerosities in a species of amphibian, red-backed salamanders (Plethodon cinereus). The findings indicate that salamanders go for more, just like human babies and monkeys. This rudimentary capacity is a type of numerical discrimination that is spontaneously present in this amphibian.
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