Teaching Critical Thinking by Evaluating Pseudoscience Claims

Critical thinking is an essential and learnable higher-order thinking skill, and is best developed through active learning rather than rote memorization. This paper explores the use of pseudoscience claims as an instructional tool to build students’ critical thinking skills. Drawing on prior research, we show how evaluating pseudoscientific claims can be used to actively engage students in identifying assumptions, analyzing arguments, and weighing evidence. Pseudoscience claims lack empirical support, so they invite skepticism and logical analysis. The paper outlines a classroom activity in which students list assumptions or counterarguments for assigned pseudoscience topics (e.g., astrology, water-fueled cars, ancient aliens), encouraging intellectual engagement regardless of personal belief. Variations of the activity include individual, team-based, and presentation formats. This approach not only builds analytical skills but may also prompt students to reassess their own unsupported beliefs, making pseudoscience evaluation an effective method for teaching critical thinking.