Income and Hippocampus Size in Children
Author Information
Author(s): Jamie L. Hanson, Amitabh Chandra, Barbara L. Wolfe, Seth D. Pollak
Primary Institution: University of Wisconsin-Madison
Hypothesis
The morphometric properties of the hippocampus would be related to gradients in income.
Conclusion
Children from lower income backgrounds had lower hippocampal gray matter density, indicating that socioeconomic status may influence brain development.
Supporting Evidence
- Lower income was associated with less gray matter in the hippocampus.
- Hippocampal gray matter density was measured using MRI scans.
- Income levels were categorized into nine different brackets.
- Participants were recruited from a large cohort study on brain development.
- Regression analyses controlled for age, gender, and parental education.
Takeaway
Kids who grow up with less money might have smaller parts of their brains that help them learn and remember things.
Methodology
The study used voxel-based morphometry to analyze structural brain images of children across different income levels.
Potential Biases
The sample may under-represent the true effects of poverty due to exclusion criteria.
Limitations
The study did not address causation and excluded children with mental health issues, which may skew the results.
Participant Demographics
Participants were children and adolescents aged 4 to 18 from various socioeconomic backgrounds.
Statistical Information
P-Value
0.014
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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