In a seminal study on this topic, Yale psychiatrist Charles Morgan and a team of researchers tested the ability of trained, military survival school students to identify their interrogators following low- and high-stress scenarios. In each condition, subjects were face-to-face with an interrogator for 40 minutes in a well-lit room. The following day, each participant was asked to select his or her interrogator out of either a live or photo lineup. In the case of the photo spreadthe most common form of police lineup in the U.S.those subjected to the high-stress scenario falsely identified someone other than the interrogator in 68% of cases, compared to 12% of misidentifications by persons in the low-stress scenario.