ArticleScientific reports2020
Grouping strategies in number estimation extend the subitizing range.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed.
- "Groupitizing": A Visuo-Spatial and Arithmetic Phenomenon.Open mind : discoveries in cognitive science · 2025Article
- Feature-selective adaptation of numerosity perception.Proceedings. Biological sciences · 2025Article
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- EEG signature of grouping strategies in numerosity perception.Frontiers in neuroscience · 2023Article
- Spatial number estimation has a higher linear range than temporal number estimation; differential affordances for subdivision might help to explain why.Journal of vision · 2022Article
- Unimpaired groupitizing in children and adolescents with dyscalculia.Scientific reports · 2022Article
- Finding the subitizing in groupitizing: Evidence for parallel subitizing of dots and groups in grouped arrays.Psychonomic bulletin & review · 2022Article
- Mathematics and Numerosity but Not Visuo-Spatial Working Memory Correlate with Mathematical Anxiety in Adults.Brain sciences · 2022Article
- Groupitizing modifies neural coding of numerosity.Human brain mapping · 2022Article
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- Grouping strategies in numerosity perception between intrinsic and extrinsic grouping cues.Scientific reports · 2021Article
- Shared Developmental Trajectories for Fractional Reasoning and Fine Motor Ability in 4 and 5 Year Olds.Behavioral sciences (Basel, Switzerland) · 2021Article
- Electrophysiological Signatures of Numerosity Encoding in a Delayed Match-to-Sample Task.Frontiers in human neuroscience · 2021Article
- Groupitizing Improves Estimation of Numerosity of Auditory Sequences.Frontiers in human neuroscience · 2021Article
- Effect of Non-canonical Spatial Symmetry on Subitizing.Frontiers in psychology · 2021Article
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Authors and funding
5 authors.
Funding
Abstract
When asked to estimate the number of items in a visual array, educated adults and children are more precise and rapid if the items are clustered into small subgroups rather than randomly distributed. This phenomenon, termed "groupitizing", is thought to rely on the recruitment of the subitizing system (dedicated to the perception of very small numbers), with the aid of simple arithmetical calculations. The aim of current study is to verify whether the advantage for clustered stimuli does rely on subitizing, by manipulating attention, known to strongly affect attention. Participants estimated the numerosity of grouped or ungrouped arrays in condition of full attention or while attention was diverted with a dual-task. Depriving visual attention strongly decreased estimation precision of grouped but not of ungrouped arrays, as well as increasing the tendency for numerosity estimation to regress towards the mean. Additional explorative analyses suggested that calculation skills correlated with the estimation precision of grouped, but not of ungrouped, arrays. The results suggest that groupitizing is an attention-based process that leverages on the subitizing system. They also suggest that measuring numerosity estimation thresholds with grouped stimuli may be a sensitive correlate of math abilities.
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