In (in)formal learning scenarios, individuals should develop epistemological beliefs (i.e., individual conceptions about the nature of knowledge and knowing) that are advantageous for understanding everyday science- and health-related information. To date, researchers measuring how to foster students’ discipline-specific epistemological beliefs have often tested researcher-designed texts in short-term interventions. Applying this logic to audio-visual stimuli, television clips might also affect (e.g., change) the epistemological beliefs of students. To test this assumption, three different television stimuli on the subject of Alzheimer’s disease with varying levels depicting the presented knowledge (as more advantageous, moderate, or less advantageous) were therefore selected by means of a content analysis, and their effects tested on a sample of 72 students using a pre-/post-test questionnaire. The results showed some partial support for the assumption that the epistemological beliefs of participants could become less advantageous when they are exposed to television clips depicting knowledge as moderate or less advantageous.