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Why try saving the ANS? An alternative proposal.

Titia Gebuis1, Roi Cohen Kadosh2, Wim Gevers3

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Summary
This summary is machine-generated.

Numerosity judgments do not rely on a number sense. Instead, continuous magnitudes are weighed to estimate quantities, challenging previous holistic models.

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Area of Science:

  • Cognitive Psychology
  • Numerical Cognition
  • Perception

Background:

  • The prevailing theory suggests that judging numerosity involves a holistic integration of continuous magnitudes and an innate number sense.
  • This model, proposed by Leibovich et al., posits a unified mechanism for quantity representation.

Purpose of the Study:

  • To critique the completeness and plausibility of the holistic numerosity judgment model.
  • To propose an alternative framework for understanding how humans estimate quantities.

Main Methods:

  • Conceptual analysis of existing theories on numerosity perception.
  • Theoretical argumentation regarding the limitations of the number sense hypothesis.
  • Development of an alternative model based on continuous magnitude processing.

Main Results:

  • The Leibovich et al. model is incomplete as it fails to specify the calculation of continuous magnitudes.
  • The model is implausible because it cannot adequately explain performance in numerical estimation tasks.
  • Evidence suggests that continuous magnitudes, not a number sense, are central to numerosity judgments.

Conclusions:

  • The concept of a dedicated 'number sense' for numerosity judgment is challenged.
  • Numerosity perception is better explained by the differential weighting of various continuous magnitudes.
  • This revised perspective offers a more robust explanation for quantity estimation behaviors.