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AimsTo determine (1) the prospective associations of conduct problems during early adolescence with tobacco, alcohol and cannabis use in young adulthood and (2) to what extent these associations are due to overlapping genetic versus environmental influences.
DesignA prospective twin study using biometric twin modelling.
SettingFinland.
ParticipantsA total of 1847 Finnish twins (943 males and 904...
AimsTo examine whether early onset of tobacco or alcohol use, and continued use of tobacco or alcohol in early adolescence, are related to a higher likelihood of developing a cannabis use disorder during adolescence.
Design and settingData were used from four consecutive assessment waves of the TRacking Adolescents' Individual Lives Survey (TRAILS), a general Dutch population study. TRAILS is an...
Aims To investigate the relationship of life‐time and repeated cannabis use with hypothalamic–pituitary–adrenal (HPA) axis reactivity to social stress in a general population sample of adolescents.
Design Adolescents who reported life‐time or repeated cannabis use, life‐time or repeated tobacco use and never use of either cannabis or tobacco were compared with respect to their HPA axis reactivity...
Aims The aim of the present study was to determine the mediating role of affiliation with cannabis‐using peers in the pathways from various dimensions of temperament to life‐time cannabis use, and to determine if these associations also contributed to the development of regular cannabis use.
Methods Objectives were studied using data from 1300 participants of the Tracking Adolescents' Individual...
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