In Germany, the internet is used by 69.4% of the population or 49 million people, and 100% of adolescents (between 14 to 19 years of age) spend time in the internet at least occasionally. An excessive use of the internet may lead to negative psychosocial consequences and changes in behaviour. This phenomenon is named "pathological internet use". Until now, there are only few studies published that investigate mental well being in German adolescents with pathological internet use. 16 participants of an outpatient treatment program for pathological internet use and 16 healthy adolescents were compared on self-reported levels of psychopathology (SPS-J), achievement motivation (FLM 7-13) and personal experience of attention deficit (FEDA). There were no differences in age, gender, intelligence or education between the two groups. Pathological internet users exhibited significantly elevated scores on self-esteem problems and the summary score of the SPS-J and significantly lower scores on FLM 7-13-dimensions "achievement ambition" and "perseverance/diligence" compared to controls. The results revealed that adolescents with pathological internet use report a higher level of psychopathology and lower levels of achievement motivation and drive. These findings should be taken into account when conceptualizing treatments for pathological internet users.
