Understanding Number Line Estimation in Williams Syndrome and Down Syndrome.

V Simms, A Karmiloff-Smith, E Ranzato, J Van Herwegen

Abstract read

In one paragraph

Article in Journal of autism and developmental disorders, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it

0cells of the map it votes in

2citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

Examining associations between foundational and complex mathematics skills in people with Down syndrome and typically developing children.The British journal of developmental psychology · 2026
Article
Exploring the Neural Substrates of Number Sense: A Perspective on Genetics, Behaviour and Neural Circuity.The European journal of neuroscience · 2026
Review

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

V SimmsSchool of Psychology, Ulster University, Coleraine, UK. v.simms@ulster.ac.uk.

A Karmiloff-Smith

E RanzatoDepartment of Psychology, Kingston University London, London, UK.

J Van HerwegenDepartment of Psychology and Human Development, UCL Institute of Education, London, UK.

Funding

British Academy SG151035

6 · The paper itself

Abstract

Previous studies suggest that tasks dependent on the mental number line may be difficult for Williams Syndrome (WS) and Down Syndrome (DS) groups. However, few have directly assessed number line estimation in these groups. The current study assessed 28 WS, 25 DS and 25 typically developing (TD) participants in non-verbal intelligence, number familiarity, visuo-spatial skills and number line estimation. Group comparisons indicated no differences in number line estimation. However, the WS group displayed difficulties with visuo-spatial skills and the DS group displayed difficulties with number familiarity. Differential relationships between number line estimation and visuo-spatial/number familiarity skills were observed across groups. Data is discussed in the context of assessment of skills in neurodevelopmental disorders.

Indexed as

Mathematical ConceptsAdolescentAdultChildComprehensionDown SyndromeFemaleHumansIntelligenceMaleMiddle AgedPsychomotor PerformanceWilliams SyndromeYoung AdultDown SyndromeNumber familiarityNumber line estimationVisuo-spatial skillsWilliams Syndrome

Identifiers

PMID31705420

DOI10.1007/s10803-019-04268-7

PMCPMC6994446

What OpenQuestion holds

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LicenceCC BY

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.