A longitudinal twin study of physical aggression during early childhood: evidence for a developmentally dynamic genome.

@article{Lacourse2014ALT,
  title={A longitudinal twin study of physical aggression during early childhood: evidence for a developmentally dynamic genome.},
  author={{\'E}ric Lacourse and Michel Boivin and Mara Brendgen and Am{\'e}lie Petitclerc and Alain Girard and F. Vitaro and St{\'e}phane Paquin and Isabelle Ouellet-Morin and Ginette Dionne and Richard E. Tremblay},
  journal={Psychological medicine},
  year={2014},
  volume={44 12},
  pages={2617-27}
}
BACKGROUND Physical aggression (PA) tends to have its onset in infancy and to increase rapidly in frequency. Very little is known about the genetic and environmental etiology of PA development during early childhood. We investigated the temporal pattern of genetic and environmental etiology of PA during this crucial developmental period. METHOD Participants were 667 twin pairs, including 254 monozygotic and 413 dizygotic pairs, from the ongoing longitudinal Quebec Newborn Twin Study. Maternal… CONTINUE READING
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