Maltby et al used Eysenck Personality Qu (EPQ) assessing relationship between PSR level and personality. Finding that whereas entertainment-social was associated with extraversion, the intense-personal level was associated with neuroticism (tense, emotional, moody). Neuroticism is linked to anxiety and depression, explaining why higher levels of PSRs are associated with poorer mental health. Suggesting future research should explore the implications of borderline-pathological and psychoticism (impulsive, anti-social, egocentric). IDA- Ethical Implications