I'd imagine that yelling at people causes unpredictable reactions. People lock up, cry, or yell back. If you want to interrogate someone, get them to tell thei

I'd imagine that yelling at people causes unpredictable reactions. People lock up, cry, or yell back. If you want to interrogate someone, get them to tell their story. Then ask them to tell it again, from a slightly different perspective. Then again. Look for inconsistencies - there should be a few (everyone gets a bit hazy on things), but not too many.