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Updated: May 16, 2026

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A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
Published on: March 1, 2022
Summary
Number is a primary perceptual attribute, supported by adaptation studies and other psychophysical methods. Research explores challenges and the functional role of adaptation in numerosity perception.
Area of Science:
- Cognitive psychology
- Neuroscience
- Perception
Background:
- The perception of number is a fundamental aspect of cognition.
- Understanding number as a primary perceptual attribute is crucial for cognitive science.
Purpose of the Study:
- To review evidence supporting number as a primary perceptual attribute.
- To discuss challenges to this concept and the role of adaptation.
Main Methods:
- Primarily adaptation studies.
- Reinforced with psychophysical methods, pupillometry, electroencephalography (EEG), and neuroimaging.
Main Results:
- Accumulated evidence over two decades supports number as a primary perceptual attribute.
- Adaptation studies, combined with other methods, provide robust support.
Conclusions:
- Number is a primary perceptual attribute.
- Adaptation plays a significant role in numerosity perception.
- Further research is needed to explore the functional role of adaptation.
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