Child Development Clinical Trial
Official title:
Interventions in Math Learning Disabilities: Cognitive and Neural Correlates
The purpose of this study is to investigate neurocognitive mechanisms underlying response to intervention aimed at enhancing, and remediating weaknesses in, numerical skills in children, including those with mathematical learning disabilities (MLD).
Status | Recruiting |
Enrollment | 180 |
Est. completion date | June 30, 2026 |
Est. primary completion date | June 30, 2026 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 6 Years to 12 Years |
Eligibility | Inclusion Criteria: 1. Elementary school aged children starting from first grade (6-12 years old) 2. IQ: Participants with a Full Scale IQ > 70 on the Wechsler Abbreviated Scale of Intelligence (WASI-II). 3. Identification of Mathematical Learning Disabilities: Scores below the 25-35th percentile percentile on symbolic number processing test in Numeracy Screener and two or more Wechsler Individual Achievement Test (WIAT-IV) math subtests 4. Identification of typically developing children: Scores at or above the 25-35th percentile percentile on symbolic number processing test in Numeracy Screener and all WIAT-IV math subtests 5. Normal or corrected-to-normal vision and no hearing impairments 6. Inclusion in MRI scan session: Right-handed Exclusion Criteria: 1. History of neurological or psychiatric disorder (i.e., schizophrenia, psychosis, depression, or attention deficit hyperactivity disorder.) 2. History of trauma involving head injury 3. Consistent psychiatric medications 4. Exclusion from MRI scan session: No major contraindication for magnetic resonance imaging (MRI) - braces, metal implants, pacemakers, vascular stents, metallic ear tubes, consistent exposure to metal, claustrophobia) |
Country | Name | City | State |
---|---|---|---|
United States | Stanford Cognitive and Systems Neuroscience Laboratory | Palo Alto | California |
Lead Sponsor | Collaborator |
---|---|
Stanford University | Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change from baseline in symbolic number comparison task performance (reaction time) | Performance will be measured by children's reaction time (milliseconds) on symbolic number comparison task | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in symbolic number comparison task performance (accuracy) | Performance will be measured by children's accuracy (% trials correct) on symbolic number comparison task | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in non-symbolic number comparison task performance (reaction time) | Performance will be measured by children's reaction time (milliseconds) on non-symbolic number comparison task | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in non-symbolic number comparison task performance (accuracy) | Performance will be measured by children's accuracy (% trials correct) on non-symbolic number comparison task | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in latent cognitive measures of symbolic number comparison task performance (drift rate) | Latent cognitive processing will be measured by drift rate from children's symbolic number comparison task performance | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in latent cognitive measures of symbolic number comparison task performance (post-error adjustment) | Latent cognitive processing will be measured by post-error adjustment from children's symbolic number comparison task performance | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in latent cognitive measures of non-symbolic number comparison task performance (drift rate) | Latent cognitive processing will be measured by drift rate from children's non-symbolic number comparison task performance | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in latent cognitive measures of non-symbolic number comparison task performance (post-error adjustment) | Latent cognitive processing will be measured by post-error adjustment from children's non-symbolic number comparison task performance | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in brain activation during symbolic number comparison task performance | Neural activity will be measured during functional magnetic resonance imaging (fMRI) symbolic number comparison task. Data will consist of beta values from individual subject contrast maps for Near vs Far contrast from the whole-brain GLM fMRI analysis. | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in brain activation during non-symbolic number comparison task performance | Neural activity will be measured during functional magnetic resonance imaging (fMRI) non-symbolic number comparison task. Data will consist of beta values from individual subject contrast maps for Near vs Far contrast from the whole-brain general linear model (GLM) fMRI analysis. | Baseline and post-intervention (after 6 weeks) | |
Primary | Change from baseline in functional connectivity during symbolic addition task performance | Mean functional connectivity between ventrotemporal occipital cortex (VTOC), posterior parietal cortex (PPC), prefrontal cortex (PFC), medial temporal lobe (MTL), and basal ganglia (BG) regions during symbolic addition fMRI task will be assessed. Data will consist of generalized psychophysiological interaction (gPPI) beta values from individual subject contrast maps for Hard vs. Easy contrast for the regions of interest (VTOC, PPC, PFC, MTL, BG). | Baseline and post-intervention (after 6 weeks) | |
Secondary | Change from baseline in symbolic addition task performance (reaction time) | Performance will be measured by children's reaction time (milliseconds) on symbolic addition task | Baseline and post-intervention (after 6 weeks) | |
Secondary | Change from baseline in symbolic addition task performance (accuracy) | Performance will be measured by children's accuracy (% trials correct) on symbolic addition task | Baseline and post-intervention (after 6 weeks) | |
Secondary | Change from baseline in functional connectivity during symbolic number comparison task performance | Mean functional connectivity between ventrotemporal occipital cortex (VTOC), posterior parietal cortex (PPC), prefrontal cortex (PFC), medial temporal lobe (MTL), and basal ganglia (BG) regions during symbolic number comparison fMRI task will be assessed. Data will consist of generalized psychophysiological interaction (gPPI) beta values from individual subject contrast maps for Near vs. Far contrast for the regions of interest (VTOC, PPC, PFC, MTL, BG). | Baseline and post-intervention (after 6 weeks) | |
Secondary | Change from baseline in functional connectivity during non-symbolic number comparison task performance | Mean functional connectivity between ventrotemporal occipital cortex (VTOC), posterior parietal cortex (PPC), prefrontal cortex (PFC), medial temporal lobe (MTL), and basal ganglia (BG) regions during non-symbolic number comparison fMRI task will be assessed. Data will consist of generalized psychophysiological interaction (gPPI) beta values from individual subject contrast maps for Near vs. Far contrast for the regions of interest (VTOC, PPC, PFC, MTL, BG). | Baseline and post-intervention (after 6 weeks) |
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