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Number-induced shifts in spatial attention: a replication study.

Kiki Zanolie1, Diane Pecher2

  • 1Department of Psychology, Erasmus University Rotterdam Rotterdam, Netherlands ; Institute of Psychology, Leiden University Leiden, Netherlands.

Frontiers in Psychology
|October 14, 2014
PubMed
Summary
This summary is machine-generated.

The mental number line, a spatial representation of numbers, is not automatically activated. Its activation depends on whether number magnitude processing is contextually relevant, challenging previous findings.

Keywords:
SNARC effectabstract conceptsattentionconcept representationgrounded cognitionimage schemamental number line

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Experimental Psychology

Background:

  • The mental number line (MNL) is a hypothesized spatial representation of numbers, ordered from left to right.
  • Prior research suggested that merely perceiving numbers automatically activates the MNL, influencing spatial attention.

Purpose of the Study:

  • To investigate the conditions under which the mental number line is activated.
  • To determine if number magnitude processing automatically shifts spatial attention, as suggested by Fischer et al. (2003).

Main Methods:

  • Six experiments employed a spatial attention paradigm using visual target detection.
  • Participants processed numbers by perceiving magnitude, parity, or simply perceiving the number.
  • Response times to targets preceded by low and high numbers were measured.

Main Results:

  • Number magnitude processing influenced spatial attention in only one of two magnitude-processing experiments.
  • In most experiments, number magnitude did not affect spatial attention.
  • The mental number line was not consistently activated automatically.

Conclusions:

  • The mental number line is not automatically activated by number perception.
  • MNL activation appears to be context-dependent, requiring explicit magnitude processing.
  • These findings suggest that abstract mental representations, or image schemas, may be context-dependent rather than universally applied.