This should be the answer you are looking for just make sure to reword it.
Answer:
subjects may experience emotional or psychological distress
Explanation:
Based on the scenario being described within the question it can be said the other most likely risk to occur would be that some subjects may experience emotional or psychological distress. This is because they would have to remember the trauma that they have suffered through and remembering trauma is like reliving that moment again for the victim, which may lead them to breaking down emotionally and psychologically.
Answer:
So you can make better decisions and learn what works and what doesn't. Learning about the past can help apply it to the future
Explanation: