This study piloted the use of surveys to measure third-year undergraduate nursing students' reflective thinking skills and critical reflection self-efficacy following a high-fidelity simulation experience. The study had two phases: Phase One established the content validity of the surveys through expert review and think-aloud sessions with students. Phase Two administered the surveys online to 58 students to evaluate their internal consistency and reliability. Results showed the surveys had good internal consistency and the Reflective Thinking Instrument was found to be reliable. Further development of the surveys is recommended to fully establish their validity and make them viable for broader use.