Numerical subtraction in the pigeon: evidence for a linear subjective number scale.

@article{Brannon2001NumericalSI,
  title={Numerical subtraction in the pigeon: evidence for a linear subjective number scale.},
  author={Elizabeth M. Brannon and Courtney Jane Wusthoff and Charles R. Gallistel and John Gibbon},
  journal={Psychological science},
  year={2001},
  volume={12 3},
  pages={238-43}
}
When humans and animals compare two numbers, responding is faster and more accurate with increasing numerical disparity and decreasing numerical size. Researchers explaining these distance and size effects often, assume that the subjective number continuum is logarithmically compressed. An alternative hypothesis is that the subjective number continuum is linear, but positions farther along it are proportionately fuzzier, that is, less precisely located. These two hypotheses have been treated as… CONTINUE READING

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