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Related Concept Videos

Real Number Operations01:27

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The concept of real numbers includes all the values that can be represented on a continuous number line. The system began with basic counting values used for enumeration. It later expanded to include values that represent the absence of quantity and opposites of the counting values. When situations required expressing parts of a whole or dividing quantities evenly, values capable of representing such proportions were developed. When written using decimal notation, these values can end or repeat...
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Problem-Solving Before Instruction (PS-I): A Protocol for Assessment and Intervention in Students with Different Abilities
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Problem-Solving Before Instruction (PS-I): A Protocol for Assessment and Intervention in Students with Different Abilities

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Integers do not automatically activate their quantity representation.

Dale J Cohen1

  • 1University of North Carolina, Wilmington, NC 28403-5612, USA. cohend@uncw.edu

Psychonomic Bulletin & Review
|March 19, 2009
PubMed
Summary
This summary is machine-generated.

Integers do not automatically activate their quantity. Instead, physical appearance primarily influences how quickly people recognize number symbols, suggesting numbers are processed independently of their value.

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Area of Science:

  • Cognitive Psychology
  • Numerical Cognition
  • Symbol Processing

Background:

  • Previous research suggested integers automatically activate their symbolic quantity.
  • This quantity was believed to dominate response processes in numerical tasks.

Purpose of the Study:

  • To rigorously test the hypothesis that quantity information dominates number symbol processing.
  • To investigate whether physical similarity or numerical distance primarily influences reaction times.

Main Methods:

  • Two same/different experiments were conducted using integers from 1 to 9.
  • Participants identified if a presented integer was the target digit '5'.
  • Reaction times were analyzed as a function of numerical distance and physical similarity.

Main Results:

  • Data revealed that quantity information exerted no control over responses.
  • Physical similarity between the target and distractor digits was the primary factor influencing reaction times.
  • Numerical distance did not significantly affect response accuracy or speed.

Conclusions:

  • Integers appear to maintain independence from their associated quantity representations during basic recognition tasks.
  • The findings challenge the prevailing view of automatic quantity activation for number symbols.
  • Cognitive models of numerical processing may need revision to account for this dissociation.