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Temperament, socioeconomic adversity, and perinatal risk as related to preschoolers' BMI
Tiffany L Martoccio1, Neda Senehi2, Holly E Brophy-Herb3
1Department of Human Development and Quantitative Methodology, University of Maryland College Park.
Insights
Highly reactive children born with perinatal risks show increased BMI with socioeconomic adversity. Temperament influences how children respond to their environment, impacting obesity risk.
Area of Science:
- Child Development
- Pediatric Obesity Research
- Developmental Psychology
Background:
- Childhood obesity disparities highlight the need to understand factors influencing weight in at-risk populations.
- Temperamental reactivity is a biological indicator of sensitivity to environmental influences.
- Children born with perinatal risks face heightened vulnerability to socioeconomic challenges.
Purpose of the Study:
- To investigate if temperamental reactivity moderates the association between socioeconomic risk and Body Mass Index (BMI) in preschoolers.
- To identify risk-augmenting and risk-protective factors for childhood obesity in socioeconomically disadvantaged children with perinatal risk.
Main Methods:
- Studied 100 Head Start preschoolers (mean age 4.07 years) with perinatal risk (preterm birth or low birth weight).
- Collected anthropometric measurements and parental data on demographics and food insecurity to create a cumulative socioeconomic risk score.
- Assessed preschoolers' temperamental reactivity using the Children's Behavior Questionnaire.
Main Results:
- Temperamental reactivity significantly moderated the relationship between socioeconomic risk and child BMI z-score (BMIz).
- Highly reactive children exposed to higher socioeconomic risk exhibited higher BMIz.
- Highly reactive children exposed to lower socioeconomic risk showed lower BMIz.
Conclusions:
- Highly reactive preschoolers with perinatal risk are differentially susceptible to socioeconomic adversity, impacting BMI in a "for better or for worse" manner.
- Temperament can serve as a biological marker for sensitivity to context in obesity prevention strategies.
- Interventions for low-income preschoolers with perinatal risk should consider individual temperamental differences.
Objective:
Disparities in childhood obesity necessitate identification of risk-protective and risk- augmenting factors for young children experiencing socioeconomic adversity born with perinatal risk. Temperamental reactivity is a biological marker of susceptibility to environmental characteristics. This study tested whether temperamental reactivity moderated the relation between socioeconomic risk and children's body mass index (BMI).
Method:
This study examined 100 Head Start preschoolers (Mage = 4.07 years, SD = 0.56) with perinatal risk, defined as preterm birth (PT, <37 weeks gestation) or low birth weight (LBW, <2500g). Anthropometric measurements were collected from children and parents. Parents completed questionnaires on family level demographics and household food insecurity to create a cumulative socioeconomic risk variable. Parents also completed the Children's Behavior Questionnaire to assess preschoolers' temperamental reactivity.
Results:
Results supported a differential susceptibility hypothesis such that preschoolers' temperamental reactivity significantly moderated the relation between socioeconomic risk and child BMI z-score (BMIz). Higher BMIz was observed in highly reactive children exposed to higher socioeconomic risk. Alternatively, lower exposure to socioeconomic risk was related to lower BMIz for highly reactive children.
Conclusions:
Findings suggest that highly reactive PT/LBW preschoolers are differentially susceptible to early socioeconomic adversity in a for better or for worse manner regarding BMIz. Thus, consideration of temperament as a marker of biological sensitivity to context may be necessary to inform obesity prevention for PT/LBW preschoolers from low-income families. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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