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L-DRD4 genotype not associated with sensation seeking, gambling performance and startle reactivity in adolescents: the TRAILS study |
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| Authors: | Nederhof Esther Creemers Hanneke E Huizink Anja C Ormel Johan Oldehinkel Albertine J |
| Affiliation: | a Interdisciplinary Center for Psychiatric Epidemiology, University Center for Psychiatry, University Medical Center Groningen, University of Groningen, The Netherlands b Department of Child and Adolescent Psychiatry, Erasmus Medical Center/Sophia, Rotterdam, The Netherlands c Research Institute of Child Development and Education, University of Amsterdam, The Netherlands |
| Abstract: | The purpose of the present study was to investigate whether a length polymorphism in the dopamine receptor D4 gene (DRD4) was associated with approach related traits in adolescents. Data were used from TRAILS (TRacking Adolescents’ Individual Lives Survey), a population based cohort of Dutch adolescents. Sensation seeking, assessed with personality questionnaires from the participants themselves and their biological father and mother (n = 1282) was not associated with DRD4 genotype. Gambling performance (n = 591) and startle reactivity (n = 432) were not associated with DRD4 genotype either. Explanations for the dissociation might be sought in differences in development of the limbic system and the prefrontal cortex, both with high dopamine receptor D4 densities and both involved in approach related behaviours. |
| Keywords: | Novelty seeking High Intensity Pleasure Temperament Emotional processing Bangor gambling task Iowa gambling task Affective startle modulation Startle amplitude Various number tandem repeat (VNTR) |
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