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Genetic and environmental influences on sleep problems: a study of preadolescent and adolescent twins


  • Funding: National Institute of Mental Health: 1 R21 MH 070542-01 (Klump). Intramural Grants Program, Michigan State University: #04-IRGP-232 (Burt). Intramural Grants Program, Michigan State University: #71-IRGP-4831 (Klump)

Melisa Moore, PhD, Sleep Center, The Children's Hospital of Philadelphia, 3405 Civic Center Boulevard, Philadelphia, PA 19104, USA. E-mail:


Background/Aim  The aim of this study was to examine the extent to which additive genetic, shared environmental and non-shared environmental factors contribute to adolescent and preadolescent sleep problems.

Methods  The sample consisted of a cohort of 270 monozygotic and 246 dizygotic twins from a university-based twin registry.

Results  Results demonstrated that genetic and environmental influences each appear to be important to adolescent sleep problems.

Conclusions  While the magnitude of genetic influence on sleep problems was consistent with findings from the adult literature, it was smaller than in studies with younger children, suggesting genetic effects may be less influential in adolescence and adulthood.

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