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Income insufficiency impacts early brain development in infants facing increased psychosocial adversity: A
Haerin Chung1, Carol L Wilkinson1,2, Asher Liu1
1Division of Developmental Medicine, Boston Children's Hospital, Boston, MA 02115.
Summary
Maternal income insufficiency in early life is linked to delayed infant brain development, specifically affecting alpha and beta power. This highlights income sufficiency as a potential screening tool for identifying at-risk populations for early intervention.
Area of Science:
- Neuroscience
- Developmental Psychology
- Public Health
Background:
- Early adversity negatively impacts neurodevelopment, social-emotional skills, and academic achievement.
- The complex nature of adversity makes isolating specific contributing factors challenging.
- Low-income families are disproportionately affected by early adversity.
Purpose of the Study:
- To identify specific socioeconomic and psychological factors associated with infant brain development differences.
- To investigate the impact of maternal income insufficiency on neurodevelopmental trajectories.
- To explore the utility of maternal income sufficiency as an early screening indicator.
Main Methods:
- Longitudinal electroencephalography (EEG) data from 293 infants at 4, 9, and 12 months.
- Parent survey data on socioeconomic status, psychological factors, and adverse life events.
- Network analysis framework to examine relationships between factors and brain development.
Main Results:
- Mothers reporting income insufficiency also reported lower education, higher stress, and more adverse life events.
- Income insufficiency was significantly associated with delayed infant brain development in the first year.
- Infants in income-insufficient households showed slower changes in alpha peak frequency, alpha power, and beta power.
Conclusions:
- Maternal income insufficiency is a specific risk factor for delayed infant neurodevelopment.
- Findings provide a framework for understanding how early adversity impacts brain development.
- Maternal income sufficiency can serve as a valuable screening tool for early intervention.
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