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 judging actual truths (i.e. "the veracity effect"). 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 judging actual truths (i.e. "the veracity effect"). Courses: Persuasion, Interpersonal Communication, Theory, Research Methods. Persuasion, Interpersonal Communication, Theory, Research Methods. Objectives: Students learn about truth bias, its effects on perceptions of veracity, and its implications. Students learn about truth bias, its effects on perceptions of veracity, and its implications.