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The Effect of Birth weight on Child Development Prior to School Entry

Caitlin T Hines1, Christina M Padilla1, Rebecca M Ryan1

  • 1Georgetown University.

Child Development
|January 29, 2020
PubMed

Insights

Lower birth weight negatively impacts child development, especially for children from lower socioeconomic status (SES) families. This socioeconomic risk amplifies the effects of birth weight on early cognitive and socioemotional outcomes.

Area of Science:

  • Developmental Psychology
  • Pediatrics
  • Sociology

Background:

  • Birth weight is a known predictor of early child development.
  • Socioeconomic status (SES) is also a significant factor influencing child outcomes.
  • The interaction between birth weight and SES on development requires further investigation.

Purpose of the Study:

  • To examine how family socioeconomic status (SES) influences the effect of birth weight on children's early cognitive and socioemotional development.
  • To test the hypothesis that the negative effects of lower birth weight are more pronounced in lower-SES families.

Main Methods:

  • Utilized data from the Early Childhood Longitudinal Study-Birth Cohort.
  • Compared age 4 outcomes of twins discordant for birth weight (N ≈ 1,400).
  • Employed twin fixed-effects models, analyzing the full sample and separately for low- and high-SES groups.

Main Results:

  • Confirmed that lower birth weight is associated with poorer cognitive and socioemotional outcomes.
  • Found that these effects are significantly stronger for children from lower-SES backgrounds.
  • Socioeconomic risk accentuates the developmental impact of birth weight.

Conclusions:

  • Family socioeconomic status plays a crucial role in moderating the impact of birth weight on early development.
  • Interventions aimed at mitigating risks associated with low birth weight may need to consider socioeconomic context.
  • Findings highlight the complex interplay between biological and social factors in child development.

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