Journal
TWIN RESEARCH AND HUMAN GENETICS
Volume 16, Issue 1, Pages 412-423Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/thg.2012.126
Keywords
adoption; childhood; longitudinal; genetic; parenting; birth parent
Categories
Funding
- NICHD
- NIDA
- OBSSR
- NIH, U.S
- NIMH
- [R01 HD042608]
- [R01 DA020585 NIDA]
- [R01 MH092118]
- [R01 DK090264]
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The Early Growth and Development Study is a prospective adoption study of birth parents, adoptive parents, and adopted children recruited in two cohorts (N = 561 triads). The primary study aims are to examine how family, peer, and contextual processes affect children's adjustment, and to examine their interplay (mediation, moderation) with genetic influences. Participants were recruited through adoption agencies located throughout the United States following the birth of a child. Assessments are ongoing, in 9-month intervals until the child reaches 3 years of age and in 1-year intervals thereafter through age 9. Data collection includes the following primary constructs: child temperament, social behavior, school performance, mental health, and health; birth and adoptive parent personality characteristics, mental health, competence, stress, health, context, substance use, parenting, and marital relations; and pregnancy use of drugs and maternal stress during pregnancy. DNA and salivary cortisol samples have also been collected. Analyses have indicated evidence for genotype-environment interactions during early childhood. Study procedures, sample representativeness (including tests of potential confounds in the adoption design), and an overview of findings to date are summarized, and future plans are described.
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