Narrative understanding supposes the viewer's mental activity of constructing causal links, an activity biased by emotions and other mental or psychological circumstances, making the causal links we construct while watching the film sometimes quite different from those the viewers obtain as a consequence of a thorough logical analysis of a narrative. This article argues that this is not the difference between “misunderstanding” and “adequate understanding,” but rather the fact that the viewers cannot discount emotional bias when talking about narrative causality. Because most films are made to be seen and understood after one viewing, they are meant to be understood through emotionally biased causal inference rather than by the pure analytical mind. In order to understand how emotionally biased causal thinking works, it is necessary to conduct empirical research with real audiences. Theories of narrative understanding can only be corroborated by such empirical research.