Linking temporal-parietal junction to internet addiction tendency: Moderating effect of critical thinking.

Abstract

Backgrounds and aimsInternet addiction (IA) is a common internet-related addictive behavior. An enormous amount of previous research on IA disorders (IADs) have paid attention to the neural basis of abnormalities, while few studies have elucidated the neural distinctions of IA tendency in general population.MethodsThe current study examined the neural basis of IA tendency combining with voxel-based morphometry (VBM) from the average student body (N = 244).ResultsAs the results presented, the gray matter density (GMD) of the left temporal-parietal junction (TPJ) was positively correlated with Internet Addiction Test (IAT) score. Further analysis revealed that critical thinking moderated the path between GMD in the TPJ and IA tendency. Specifically, the correlation between GMD in the TPJ and IA tendency was weaker for those with a higher critical thinking disposition.Discussion and conclusionHigher critical thinking show a hindering effect in susceptibility to IA based on the neural basis of temporal-parietal junction differences.