Socioeconomic disparities affect prefrontal function in children
Mark M Kishiyama1, W Thomas Boyce, Amy M Jimenez
1University of California, Berkeley, CA, USA. mmkishiyama@berkeley.edu
Insights
Children from low socioeconomic status (SES) backgrounds show altered brain activity in prefrontal regions. This neurophysiological evidence links social inequalities to impaired cognitive functions in children.
Area of Science:
- Neuroscience
- Developmental Psychology
- Sociology
Background:
- Social inequalities significantly impact child health and development.
- Low socioeconomic status (LSES) is linked to poorer academic achievement and behavioral impairments in prefrontal function.
- The direct neural correlates of socioeconomic disparity on brain activity remain largely unexplored.
Purpose of the Study:
- To investigate the influence of socioeconomic status on direct measures of neural activity in children.
- To provide electrophysiological evidence of altered prefrontal function in LSES children.
Main Methods:
- Utilized electrophysiological measures to assess brain activity.
- Compared prefrontal-dependent cognitive measures between children from low and high socioeconomic status (SES) backgrounds.
Main Results:
- LSES children exhibited reduced prefrontal-dependent electrophysiological measures of attention compared to high SES (HSES) children.
- The observed pattern of reduced attention in LSES children resembles that seen in individuals with lateral prefrontal cortex (PFC) damage.
Conclusions:
- Social inequalities are associated with neurophysiological alterations in prefrontal cortex (PFC) function in LSES children.
- Factors such as stress and limited cognitive stimulation in LSES environments may contribute to these findings.
- Interventions targeting specific prefrontal processes could benefit LSES children.
Abstract:
Social inequalities have profound effects on the physical and mental health of children. Children from low socioeconomic status (SES) backgrounds perform below children from higher SES backgrounds on tests of intelligence and academic achievement, and recent findings indicate that low SES (LSES) children are impaired on behavioral measures of prefrontal function. However, the influence of socioeconomic disparity on direct measures of neural activity is unknown. Here, we provide electrophysiological evidence indicating that prefrontal function is altered in LSES children. We found that prefrontal-dependent electrophysiological measures of attention were reduced in LSES compared to high SES (HSES) children in a pattern similar to that observed in patients with lateral prefrontal cortex (PFC) damage. These findings provide neurophysiological evidence that social inequalities are associated with alterations in PFC function in LSES children. There are a number of factors associated with LSES rearing conditions that may have contributed to these results such as greater levels of stress and lack of access to cognitively stimulating materials and experiences. Targeting specific prefrontal processes affected by socioeconomic disparity could be helpful in developing intervention programs for LSES children.
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