Youssef Hasan, Laurent Bègue, Michael Scharkow, Brad J. Bushman This study used both the noise blast test and the story stem exercise to gauge aggressive behavior and expectations of aggression. The diagram on page 226 provides a strong visual. From the abstract: "After gameplay, participants could blast a confederate with loud unpleasant noise through headphones (the aggression measure). As a potential causal mechanism, we measured hostile expectations. Participants read ambiguous story stems about potential interpersonal conflicts, and listed what they thought the main characters would do or say, think, and feel as the story continued. As expected, aggressive behavior and hostile expectations increased over days for violent game players, but not for nonviolent video game players, and the increase in aggressive behavior was partially due to hostile expectations."