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Ethnic Discrimination Moderates Genetic Influences on Adolescent Internalizing and Externalizing Psychopathology.

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Ethnic discrimination intensifies genetic influences on behavioral problems in minority adolescents. This highlights the complex interplay between genetics, environment, and discrimination in youth psychopathology.

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Area of Science:

  • Psychology
  • Genetics
  • Sociology

Background:

  • Externalizing and internalizing problems are significant concerns in early adolescence.
  • Understanding the interplay of genetic and environmental factors is crucial for addressing psychopathology.
  • The role of ethnic discrimination as a moderator requires further investigation.

Purpose of the Study:

  • To examine genetic and environmental contributions to externalizing and internalizing problems.
  • To investigate the moderating role of ethnic discrimination on these influences.
  • To understand the interaction between genetic predispositions and discrimination in minority youth.

Main Methods:

  • Utilized data from 740 racially/ethnically minoritized adolescents in the Adolescent Brain Cognitive Development (ABCD) Study.
  • Employed univariate biometric twin modeling to analyze genetic and environmental influences.
  • Collected self-reports of ethnic discrimination and parent-reports of adolescent behavioral problems.

Main Results:

  • Both genetic and environmental factors significantly contribute to externalizing and internalizing problems.
  • Ethnic discrimination moderated genetic influences, with higher discrimination linked to stronger genetic effects.
  • Genetic influences on psychopathology were amplified by experiences of ethnic discrimination.

Conclusions:

  • Ethnic discrimination exacerbates genetic predispositions for externalizing and internalizing problems in minority adolescents.
  • Findings underscore the critical interaction between genetic factors, discrimination, and psychopathology.
  • This research advances understanding of developmental psychopathology in racially/ethnically diverse youth.