Abstract
Newborn chicks need no number tricks. Commentary: Number-space mapping in the newborn chick resembles humans' mental number line.
Highlights
The study of numerical ordering abilities in chicks recently reported by Rugani et al (2015) concluded that “ to humans, chicks associate smaller numbers with the left space and larger numbers with the right space.” (p. 534)
Do their results really show that 3-day-old domestic chicks are aware of both relative and absolute quantities, map them from left to right, and have an “innate number sense” (Rugani et al, 2015, p. 536)?
The key manipulation was the amount of black dots shown on both training and test occluders
Summary
The study of numerical ordering abilities in chicks recently reported by Rugani et al (2015) concluded that “ to humans, chicks associate smaller numbers with the left space and larger numbers with the right space.” (p. 534). The study of numerical ordering abilities in chicks recently reported by Rugani et al (2015) concluded that “ to humans, chicks associate smaller numbers with the left space and larger numbers with the right space.”
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