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Mental rotation abilities in individuals with Down syndrome--a pilot study
Claire Hinnell1, Naznin Virji-Babul
1University of Victoria, Victoria, BC. cjhinnell@hotmail.com
Summary
Individuals with Down syndrome demonstrated mental rotation skills comparable to typically developing peers, though with increased error rates. This suggests that spatial reasoning abilities in Down syndrome are linked to mental age.
Area of Science:
- Cognitive Psychology
- Neurodevelopmental Disorders
Background:
- Mental rotation is a key spatial reasoning ability.
- Understanding cognitive abilities in individuals with Down syndrome is crucial for targeted interventions.
Purpose of the Study:
- To investigate mental rotation capabilities in individuals with Down syndrome.
- To compare mental rotation performance between individuals with Down syndrome and typically developing children matched for mental age.
Main Methods:
- A pilot study utilized a mental rotation paradigm (Cooper & Shepherd, 1973).
- Participants identified reversed or non-reversed uppercase 'F' stimuli at varying orientations.
- Reaction times and error rates were recorded for both groups.
Main Results:
- Both groups exhibited increased reaction times with greater angular disparity, indicating successful mental rotation.
- No significant difference in reaction time was found between the Down syndrome and typically developing groups.
- The Down syndrome group made significantly more errors than the control group.
Conclusions:
- Individuals with Down syndrome can perform mental rotations above chance levels.
- Mental rotation ability in Down syndrome correlates with mental age.
- While reaction times were comparable, increased errors suggest potential differences in precision or executive control.