Robert's coworkers have decided to organize a strike against their employer. They say they won't report to work until they receive a pay increase. Robert doesn't really feel this is fair, because he knows the budget has been cut, and the employer is trying to discuss other ideas with the workers. Robert decides to participate in the strike anyway. Robert's actions can best be explained by informational social influence
diffusion of responsibility
groupthink
deindividuation
social facilitation