Difficult temperament in infancy is a risk factor for forms of later internalizing and externalizing psychopathology, including depression and anxiety. A better understanding of the roots of difficult temperament requires assessment of its early development with a genetically informative design. The goal of this study was to estimate genetic and environmental contributions to individual differences in infant negative emotionality, their persistence over time and their influences on stability between 5 and 18 months of age.Participants were 244 monozygotic and 394 dizygotic twin pairs (49.7
作者:Lyndall, Schumann;Michel, Boivin;Stéphane, Paquin;Eric, Lacourse;Mara, Brendgen;Frank, Vitaro;Ginette, Dionne;Richard E, Tremblay;Linda, Booij
来源:PloS one 2017 年 12卷 4期