The Development of Numerical Estimation

  title={The Development of Numerical Estimation},
  author={Robert S. Siegler and John E Opfer},
  journal={Psychological Science},
  pages={237 - 250}
We examined children's and adults' numerical estimation and the representations that gave rise to their estimates. The results were inconsistent with two prominent models of numerical representation: the logarithmic-ruler model, which proposes that people of all ages possess a single, logarithmically spaced representation of numbers, and the accumulator model, which proposes that people of all ages represent numbers as linearly increasing magnitudes with scalar variability. Instead, the data… 

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