How Attention Affects Number Estimation
Author Information
Author(s): Petra Vetter, Brian Butterworth, Bahador Bahrami
Primary Institution: Institute of Cognitive Neuroscience, University College London
Hypothesis
Is subitizing a pre-attentive process that is unaffected by attentional load?
Conclusion
The study found that both small and large number estimations are affected by attentional load, challenging the idea that subitizing is a separate, pre-attentive process.
Supporting Evidence
- Accuracy in estimating small numbers decreased with increased attentional load.
- Subitizing accuracy was impaired under dual-task conditions.
- Both small and large numerosity judgments were affected by attentional resources.
Takeaway
When we try to count small numbers of things quickly, it seems easy, but if we get distracted, it becomes harder, just like counting bigger numbers.
Methodology
The study used a dual task paradigm to manipulate attentional load while participants judged the numerosity of visual stimuli.
Limitations
The study did not investigate the nature of the enumeration mechanisms in detail.
Participant Demographics
14 subjects (mean age: 23.1, 10 females) with normal or corrected-to-normal vision.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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