Who are problematic internet users? An investigation of the correlations between problematic internet use and shyness, loneliness, narcissism, aggression and self-perception

Highlights：

• There is a positive correlation between problematic internet use, shyness and aggression.

• Shyness and aggression emerged as predictors of problematic internet use.

• Narcissism, loneliness and self-perception are not predictors of problematic internet use.