This investigation sought to identify a set of measures predictive of those
who would intervene in a crowd disturbance with the intent of restoring or
der. Male participants (N = 74) completed a battery of social and personali
ty measures. Men who had previously attempted to break up a fight(s), inclu
ding those who had recently intervened and judged their efforts to have bee
n successful, were most likely to step in. Additionally, peacemakers were s
ubject to the false consensus effect and strongly believed in law and order
. A multiple regression analysis yielded a solution that accounted for 40.3
% of the variance, with previous experience as a peacemaker and attitudes t
oward law and order emerging as the best predictors.