The underlying structure of visuospatial working memory in children with mathematical learning disability

Area of Science:

• Cognitive Psychology
• Developmental Neuroscience
• Educational Psychology

Background:

• Working memory (WM) is crucial for mathematical achievement.
• Children with mathematical learning disability (MLD) often show reduced WM capacity.
• Existing research on visuospatial working memory (VSWM) in MLD presents conflicting findings.

Purpose of the Study:

• To investigate visual, spatial-sequential, and spatial-simultaneous WM performance in children with MLD and low mathematics achievement (LMA).
• To compare WM performance between MLD, LMA, and typically developing (TD) children.
• To clarify the role of specific VSWM components in mathematical learning difficulties.

Main Methods:

• Individual testing of children using six computerized tasks targeting distinct VSWM subcomponents.
• Matching of MLD, LMA, and TD groups based on reading decoding and verbal intelligence.
• Statistical significance testing, bootstrap confidence intervals, and effect size computation.

Main Results:

• Both MLD and LMA children demonstrated significantly lower performance on spatial-simultaneous and spatial-sequential WM tasks compared to TD children.
• The WM deficit was more severe in children with MLD than in those with LMA.
• WM performance appears to exist on a continuum, with TD children scoring highest and MLD children scoring lowest.

Conclusions:

• Visuospatial WM, particularly spatial-simultaneous and spatial-sequential aspects, is impaired in children with mathematical learning difficulties.
• The degree of WM impairment correlates with the severity of mathematical challenges.
• These findings underscore the importance of addressing VSWM deficits in interventions for mathematical learning disabilities.