This activity helps students examine key elements of truth-default theory. Specifically, by participating in a deception detection game, which secretly prompts different teams to be more or less suspicious, students learn that people's tendency to be "truth biased" leads to lower accuracy when judging actual lies and higher accuracy when…

Deception detection is a topic covered in many psychology and communication courses. We designed and implemented an engaging class activity to facilitate the students' learning of several key concepts related to sender and receiver variability in lie detection. The pedagogical effectiveness of the activity was measured. In line with previous…