International Classification of Diseases, used by the WHO (World Health Organisation), includes 10 groups such as delusional disorders, mood disorders, etc. and clinical/personality disorders are part of the same group
Study 1: Young et al (2009) - CBT and internet addicts
Aim: to investigate the effect of using CBT to treat a group of patients diagnosed with internet addiction
Procedure: 114 participants recruited, completed the Internet Addiction Test, received online CBT sessions, rated their behaviour and feelings at 3rd, 8th and 12th session and 6 months after
Findings: There was some improvement over the 12 weeks of therapy, and no significant drop in ratings 6 months after
Different types of internet addiction were identified. This means it is not clear whether all types achieved the same effects of treatment (30% Males- pornography, 30% Females – online chat rooms)
Questionnaires about their own feelings and behaviour may be inaccurate because participants might lie or give socially desirable responses. This means data might not be a valid picture of how their behaviour has changed during treatment