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A Method to Quantify Visual Information Processing in Children Using Eye Tracking

A Method to Quantify Visual Information Processing in Children Using Eye Tracking

Published on: July 9, 2016

Typical and atypical development of visual estimation abilities.

Daniel Ansari¹, Chris Donlan, Annette Karmiloff-Smith

¹Neurocognitive Development Unit, Institute of Child Health, London, UK. daniel.ansari@uwo.ca

Cortex; a Journal Devoted to the Study of the Nervous System and Behavior

|August 23, 2007

Summary

Developmental impairments in number skills are common but understudied. This research shows that numerical estimation in Williams syndrome (WS) is delayed and deviates from typical development, impacting early number sense.

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Area of Science:

Cognitive Psychology
Developmental Neuroscience
Genetics

Background:

Developmental impairments of number skills are prevalent yet under-researched.
Williams syndrome (WS) offers a unique model for studying atypical numerical cognition development.

Purpose of the Study:

To investigate low-level numerical representations and their developmental trajectory in individuals with Williams syndrome (WS).
To compare the development of numerical estimation skills in WS to typically developing (TD) individuals.

Main Methods:

Rapidly presented dot arrays (5, 7, 9, 11 dots) were used to assess numerical estimation.
Groups of individuals with WS and TD individuals across different age ranges participated.

Main Results:

The development of numerical estimation skills in WS is significantly delayed and deviates from the typical trajectory.
TD children showed improved accuracy and reduced variability in estimation over time, unlike WS individuals who exhibited only marginal changes.
This suggests distinct developmental pathways for numerical cognition in WS.

Conclusions:

Low-level numerical representation development in WS is atypical, characterized by delays and deviations.
Understanding these developmental changes is crucial for both atypical development (WS) and typical numerical cognition.
Further research should focus on the quantitative changes and functional roles in numerical development.