This study examined the effectiveness of different debriefing facilitation approaches on third year undergraduate nursing students' reflective thinking and critical reflection self-efficacy following high-fidelity simulation using a 3-arm nonequivalent control group design. Students facilitated by either an academic or academic and student showed significantly higher levels of critical reflection. Correlation revealed a medium, positive association between critical reflection self-efficacy and general self-efficacy. Academic and student partnerships in debriefing can prompt students to reflect.