I'll answer your questions based on my experience as a student participating in simulations in the lab setting. All simulations were done with mannequins that were interactive (they had breath sounds, pulse, BP, recorded voices, and critical care information displayed on a bedside monitor)
1. Do you facilitate or participate in debriefing sessions following high-fidelity simulations? I'm not really sure what "high-fidelity" means, but we did have debriefing immediately after each individual simulation.
2. Do you feel that you (or your students) have an opportunity to reflect during debriefing? If so, how? Absolutely. Often times the first thing we were asked by the instructor is "How do you think it went?". The instructor would have a list of observations about how we performed, assessments/implementations, statements we made, interaction with other "personnel", etc. Our instructors would let us know where we were strong, where we were weak, and things to consider reviewing. Our instructors would go over any questions and concerns we had about the simulation, and they would always be sure to review how the scenario would play out in the "perfect world".
3. What are your beliefs about student reflection following simulation experiences? I think they placed a vital role in my development into the role of a nurse. Personally, I learn the best through hands on experience. Through lab experiences and the reflections that followed, I was able to get hands on experience doing assessments, skills, and prioritization when things are moving at a fast pace. This is an experience that we never really got in the clinical setting as a student (aside from preceptorship). The time for reflections allowed me to slow down and evaluate my performance, realize the things that I did, and the things that I should have done. Also, it provided a time for my instructor to give one on one evaluation of my performance and the areas I need to work on developing.
If this isn't the type of response you're looking for, PM me and I'll see if I can clarify.