Brain Volumes and Skills in Children with Down Syndrome
Author Information
Author(s): Grzadzinski Rebecca, Mata Kattia, Bhatt Ambika S., Jatkar Alapika, Garic Dea, Shen Mark D., Girault Jessica B., St. John Tanya, Pandey Juhi, Zwaigenbaum Lonnie, Estes Annette, Shen Audrey M., Dager Stephen, Schultz Robert, Botteron Kelly, Marrus Natasha, Styner Martin, Evans Alan, Kim Sun Hyung, McKinstry Robert, Gerig Guido, Piven Joseph, Hazlett Heather
Primary Institution: Carolina Institute for Developmental Disabilities, University of North Carolina at Chapel Hill
Hypothesis
How do brain volumes relate to cognitive and adaptive skills in school-age children with Down syndrome?
Conclusion
Children with Down syndrome have lower cognitive skills and smaller brain volumes compared to children with autism spectrum disorder and typically developing children, but their adaptive skills are comparable to those with autism.
Supporting Evidence
- Children with Down syndrome had significantly lower cognitive skills compared to those with autism and typically developing children.
- Daily Living adaptive skills were similar between children with Down syndrome and those with autism.
- Children with Down syndrome exhibited smaller total cerebral volumes compared to both autism and typically developing children.
- Correlations were found between cerebellum volumes and Daily Living adaptive behaviors in the Down syndrome group.
Takeaway
This study looked at how the brains of kids with Down syndrome are different and how that affects their thinking and daily living skills. It found that while they may struggle more with thinking, they can do just as well as some kids with autism in daily tasks.
Methodology
Children with Down syndrome underwent cognitive and adaptive assessments and MRI scans, and were compared to typically developing and autism spectrum disorder groups.
Potential Biases
The sample may be biased towards children with higher cognitive abilities who could complete MRI scans without sedation.
Limitations
The study's sample may not represent the broader population of children with Down syndrome, and the validity of the behavioral measures in this group is not fully established.
Participant Demographics
Children with Down syndrome (n=35), autism spectrum disorder (n=29), and typically developing children (n=80), mean age 9.7 years.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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