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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
Published on: January 23, 2017
Temporal order judgment reveals how number magnitude affects visuospatial attention
Marco Casarotti1, Marika Michielin, Marco Zorzi
1Dipartimento di Psicologia Generale, University of Padova, via Venezia 8, Padova 35131, Italy.
Cognition
|October 19, 2006
Summary
Numerical processing automatically directs spatial attention, influencing event perception. Small numbers draw attention leftward, while large numbers draw it rightward, affecting temporal judgments.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Psychophysics
Background:
- The mental number line suggests spatial representations for numerical magnitude.
- The relationship between number processing and spatial attention remains an active research area.
Purpose of the Study:
- To investigate the link between numerical magnitude processing and spatial attention allocation.
- To determine if numerical processing automatically influences spatial attention.
Main Methods:
- Six experiments were conducted using a temporal order judgment task.
- Attentional allocation was indexed by participants' perception of visual event timing.
Main Results:
- Numerical processing automatically allocates spatial attention, impacting temporal event perception.
- Processing small numbers (1, 2) led to leftward attention (left stimuli perceived as earlier).
- Processing large numbers (8, 9) led to rightward attention (right stimuli perceived as earlier).
- This effect was specific to quantity processing, not generalizing to non-numerical sequences.
Conclusions:
- Numerical magnitude processing has a direct and automatic influence on spatial attention.
- Spatial attention shifts induced by number processing affect the perceived order of external events.
- The findings support a tight integration between numerical cognition and spatial attention mechanisms.
