During a raucous concert given by her favorite band, death metalheads, sylvie becomes less self-aware and finds herself absorbed in the group of mental of death metalhands fans. she normally keeps a distance from strangers in crowds, but in this state, she finds herself willing to be lifted up by other fans to crowd-surf. sylvie's behavior can be explained by the phenomenon of deindividuation self-verification theory self-discrepancy theory cognitive dissonance