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Direct linkEirunn Skaug; Nikolai O. Czajkowski; Trine Waaktaar; Svenn Torgersen – Developmental Psychology, 2024
The aim of the study was to examine associations between life events and self-assessed loneliness in adolescence. We used data from a Norwegian population-based twin sample including seven birth cohorts (N = 2,879, 56% females). The participants completed self-report questionnaires three times throughout adolescence, with 2 years in between (i.e.,…
Descriptors: Foreign Countries, Twins, Nature Nurture Controversy, Biological Influences
Zheng, Lei; Chen, Jie; Li, Xinying; Gan, Yiqun – European Journal of Developmental Psychology, 2022
Future orientation tends to prevent engagement in risk behaviours and results in good academic performance among adolescents. Our study aimed to establish whether genetic factors contributed to future orientation among Chinese adolescents. We recruited 988 pairs of twins from Beijing. By constructing a high-order A (additive genetic variance) C…
Descriptors: Foreign Countries, Adolescents, Twins, Orientation
Bruno Sauce; John Wiedenhoeft; Nicholas Judd; Torkel Klingberg – npj Science of Learning, 2021
The interplay of genetic and environmental factors behind cognitive development has preoccupied multiple fields of science and sparked heated debates over the decades. Here we tested the hypothesis that developmental genes rely heavily on cognitive challenges - as opposed to natural maturation. Starting with a polygenic score (cogPGS) that…
Descriptors: Foreign Countries, Children, Adolescents, Short Term Memory
Chen, Jie; Li, Xinying; McGue, Matt – Journal of Child Psychology and Psychiatry, 2013
Background: Confounding introduced by gene-environment correlation (rGE) may prevent one from observing a true gene-environment interaction (G × E) effect on psychopathology. The present study investigated the interacting effect of the BDNF Val66Met polymorphism and stressful life events (SLEs) on adolescent depression while controlling for the…
Descriptors: Depression (Psychology), Symptoms (Individual Disorders), Foreign Countries, Adolescents
Lamb, Diane J.; Middeldorp, Christel M.; van Beijsterveldt, Catarina E. M.; Bartels, Meike; van der Aa, Niels; Polderman, Tinca J. C.; Boomsma, Dorret I. – Journal of the American Academy of Child & Adolescent Psychiatry, 2010
Objective: To explain the differential course of anxiety and depression in individuals from childhood to adulthood by examining age-related changes in the genetic and environmental etiology of anxious and depressive symptoms. Method: A sample of 1470, 1839, and 2023 Dutch twins aged 12, 14, and 16 years reported on symptoms of anxious depression…
Descriptors: Age Differences, Nature Nurture Controversy, Risk, Children
Peer reviewedSharpes, Donald K.; Wang, Xinbing – Adolescence, 1997
Examines self-concept, assuming it to be genetic in origin and that adolescents' perception of personal, relational, and academic self-identity occurs uniformly across cultures. Results indicate a high similarity between the majority and minority adolescents, suggesting developmental propensities in self-concept formation. Environment seemed…
Descriptors: Adolescent Attitudes, Adolescents, Biological Influences, Foreign Countries
Download full textLange, Anna-Lena – 1996
This longitudinal study investigated hereditary and environmental influences on life situation, self-reported health, and coping ability at mid-life in relation to background factors collected during adolescence. A nationally representative Swedish sample comprised of monozygotic (MZ) and dizygotic (DZ) twins; a control group of singletons was…
Descriptors: Adjustment (to Environment), Adolescents, Adults, Classroom Environment
