Addict Behav. 2017 Feb; 65: 137-146. doi: 10.1016 / j.addbeh.2016.10.018.
Hahn E1, Reuter M2, Spinath FM3, Montag C4.
Abstraktus
Vis daugiau tyrimų daugiausia dėmesio skiria probleminiams elgesio modeliams, susijusiems su interneto naudojimu, siekiant nustatyti šio naujo reiškinio, vadinamo interneto priklausomybe, kontekstinius ir individualius rizikos veiksnius. IA galima apibūdinti kaip daugiamatį sindromą, apimantį tokius aspektus kaip potraukis, tolerancijos ugdymas, kontrolės praradimas ir neigiamos pasekmės. Atsižvelgiant į tai, kad ankstesni tyrimai dėl kito priklausomybę sukeliančio elgesio parodė didelį paveldimumą, galima tikėtis, kad pažeidžiamumas IA gali atsirasti ir dėl žmogaus genetinio polinkio. Tačiau abejotina, ar skirtingi IA komponentai turi skirtingą etiologiją.
Using data from a sample of adult monozygotic and dizygotic twins and non-twin siblings (N=784 individuals, N=355 complete pairs, M=30.30years), we investigated the magnitude of genetic and environmental influences on generalized IA as well as on specific facets such as excessive use, self-regulation, preference for online social interaction or negative consequences. To explain the heritability in IA, we further examined the relation to Self-Directedness as potential mediating source.
Results showed that relative contributions of genetic influences vary considerable for different components of IA. For generalized IA factors, individual differences could be explained by shared and non-shared environmental influences while genetic influences did not play a role. For specific facets of IA and private Internet use in hours per week, heritability estimates ranged between 21% and 44%. Bivariate analysis indicated that Self-Directedness accounted for 20% to 65% of the genetic variance in specific IA facets through overlapping genetic pathways. Implications for future research are discussed.
ŽODŽIAI: Genetics; Heritability; Internet addiction; Problematic Internet use; Self-Directedness
PMID: 27816039
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