On the day of the study, a physiological measure of pulse rate was taken in the virtual reality setting. This pretest pulse rate was taken manually by an experimenter by placing her fingers on a subject’s left wrist. She then counted the number of heart beats for 1.5s and multiplied by four. At a later time, reliability was assessed for 6 subjects. To do so, two experimenters simultaneously took the pulse rate of individual subjects. One experimenter placed her fingers on a subject’s left wrist and counted heart beats for 15 s while the other experimenter placed her fingers on the subject’s right wrist and counted heart beats during that same 15-s time frame. Each score was then multiplied by four. Interobserver reliability for pulse rate, computed as two times the number of agreements divided by the total number of scores for both experimenters, averaged 98% for the six protocols where each beat was counted as a judgment.