McNally and His Colleagues Have Conducted Controlled Experiments to Examine

Multiple Choice

McNally and his colleagues have conducted controlled experiments to examine the effectiveness of Critical Incident Stress Debriefing (CISD) on preventing post-traumatic stress disorder (PTSD) . The results of the studies show that CISD is __________.

A) a very effective means of reducing PTSD
B) only effective on police officers
C) effective if administered within twenty-four hours of the trauma
D) not an effective means of preventing the onset of PTSD