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Published on: December 7, 2018
Increased visual bias in children with developmental coordination disorder: Evidence from a visual-tactile temporal
Satoshi Nobusako1, Michihiro Osumi1, Emi Furukawa2
1Neurorehabilitation Research Center, Kio University, 4-2-2 Umaminaka, Koryo-cho, Kitakatsuragi-gun, Nara 635-0832, Japan; Graduate School of Health Science, Kio University, 4-2-2 Umaminaka, Koryo-cho, Kitakatsuragi-gun, Nara 635-0832, Japan.
Children with developmental coordination disorder (DCD) exhibit a pronounced visual bias, relying more on sight for movement. This heightened visual reliance is linked to poorer manual dexterity in these children.
Area of Science:
- Neuroscience
- Developmental Psychology
- Motor Control
Background:
- Children with developmental coordination disorder (DCD) often display motor clumsiness.
- Previous research suggests a heavy reliance on visual input for movement in DCD.
- Objective, quantitative data on perceptual biases in DCD remains limited.
Purpose of the Study:
- To quantitatively assess perceptual biases in children with DCD.
- To compare visual-tactile perceptual biases between children with DCD and typically developing peers.
- To explore the relationship between perceptual biases and factors like manual dexterity.
Main Methods:
- A visual-tactile temporal order judgment (TOJ) task was employed.
- Perceptual bias was measured using the point of subjective equality (PSE).
- Correlation analysis examined associations between perceptual bias and demographic/clinical variables.
Main Results:
- Children with DCD demonstrated a significantly stronger visual bias compared to controls.
- Increased visual bias in children with DCD correlated significantly with poorer manual dexterity.
- No other significant correlations were found with examined variables.
Conclusions:
- Children with DCD exhibit a significant visual bias in perceptual tasks.
- This visual bias is associated with impaired manual dexterity.
- Findings suggest a potential role of visual reliance in the motor difficulties characteristic of DCD.
