Deindividuationtheory says been anonymous encourages aggression
When in a group people feel less personal responsibility and less fear of public disapproval than when clearly identifiable as an individual
Real world evidence of deindividuation
Mullen found the more people in a mob the greater the level of violence
Mann analysed 21 reports of suicides and identified ten cases where a crowd baited person threatening suicide. Baiting more likely at night when distant from the crowd
Research studies of deindividuation
Zimbardo found anonymity affects behaviour in his shock study
Diener et al observed 1300 trick or treating children and costume was anonymous they were more likey to steal
Evidence to support deindividuation increases likelihood of aggressive behaviour
