Fact · Accessibility and health
0.85effect size
In the 2005 meta-analysis, the overall effect size for spatial storage working memory in children with ADHD was 0.85.
Checked against its source on October 16, 2026
In the source's own words
“Overall effect sizes for spatial storage (effect size = 0.85, CI = 0.62 - 1.08)”
A meta-analysis of working memory impairments in children with attention-deficit/hyperactivity disorder, Ron Martinussen et al., Journal of the American Academy of Child and Adolescent Psychiatry, 2005, Results.
Open the original (DOI 10.1097/01.chi.0000153228.72591.73)- What it measures
- Spatial storage tasks ask people to hold the position or layout of visual items in memory for a short time, without changing them.
- What it does not show
- This is a group average from laboratory tasks. It does not show how any one person will perform on writing or everyday memory tasks.