What factor does Armstrong cite as normalizing behavior at fraternity parties?

The normalization of behavior at fraternity parties is primarily attributed to the social acceptance of aggressive behaviors. This concept indicates that certain actions, such as excessive drinking and sexual aggression, become ingrained within the social interactions and expectations of these environments. The underlying social dynamics and shared values among attendees contribute to the perception that such behaviors are normal or acceptable, thus reinforcing a culture where they are perpetuated.

In the context of fraternity parties, this acceptance can shape individual attitudes and behaviors, leading participants to engage in or overlook aggressive actions that they might otherwise find troubling in different contexts. The framework of social acceptance plays a crucial role in creating an atmosphere where such behaviors not only persist but are often celebrated, complicating discussions around consent and personal responsibility in these settings.