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Related Experiment Videos

Problem behavior in early and middle childhood: an initial behavior genetic analysis

S Schmitz1, D W Fulker, D A Mrazek

  • 1Institute for Behavioral Genetic, University of Colorado, Boulder 80309-0447, USA.

Journal of Child Psychology and Psychiatry, and Allied Disciplines
|November 1, 1995
PubMed
Summary

Genetic and environmental factors influence childhood problem behaviors. Shared environments are key in early years, while genetic influences grow stronger as children age.

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Area of Science:

  • Developmental Psychology
  • Behavioral Genetics
  • Child Psychology

Background:

  • Childhood problem behaviors are a significant concern.
  • Understanding the etiology of these behaviors is crucial for intervention.
  • Twin studies are a powerful tool for disentangling genetic and environmental influences.

Purpose of the Study:

  • To estimate the relative importance of genetic and environmental influences on problem behavior in children.
  • To examine the continuity and change in the etiology of problem behavior across different childhood stages.
  • To compare etiological factors between early and middle childhood.

Main Methods:

  • Utilized twin samples to assess genetic and environmental contributions.
  • Employed the Child Behavior Checklist (CBCL) for behavior assessment.

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  • Administered CBCL/2-3 for younger cohort and CBCL/4-18 for older cohort.
  • Included longitudinal data from a subset of the older sample.

    • Main Results:

    • Shared environmental influences were more prominent in early childhood.
    • Genetic influences showed increasing importance from early to middle childhood.
    • Behavioral genetics findings suggest developmental shifts in etiological factors.

    Conclusions:

    • The relative contributions of genetic and environmental factors to problem behavior evolve during childhood.
    • Early childhood problem behaviors may be more susceptible to environmental interventions.
    • Later childhood problem behaviors might have a stronger genetic component.