Final answer:
The true statement concerning spectator aggression is that it can be influenced by crowd size and anonymity. Team success and alcohol consumption do affect spectator aggression, contrary to what options A and B suggest, and aggression is often more prevalent in team sports compared to individual sports.
Step-by-step explanation:
Among the statements concerning spectator aggression, the correct assertion is that spectator aggression can be influenced by crowd size and anonymity. Research in the field of social psychology indicates that as crowd size increases, individuals may feel a sense of anonymity, which sometimes leads to a disinhibition effect, thereby potentially increasing aggressive behavior. This phenomenon aligns with concepts such as deindividuation, where the larger group provides a cover for individual actions.
Contrary to options A and B, evidence suggests that team success can influence spectator emotions and behaviors, with frustration from team performance sometimes leading to aggression. Similarly, alcohol consumption has been found to correlate positively with aggressive behavior according to studies like Greenberg & Barling (1999), which explored predictors of workplace violence but have parallels in sports spectatorship. Lastly, option D is inaccurate as spectator aggression is typically more prevalent in team sports than individual sports, possibly due to stronger group identification and intergroup rivalries.