If you knew something about a crime, would you tell police?
Seven, maybe eight hands inched in the air.
Or would you say nothing?
An equal number go up.
A third group of students, slightly larger than the first two, stood somewhere in the middle. So Rick Frei, professor of psychology at Community College of Philadelphia, pressed the question.
What if the victim was someone you knew?
A child? A baby?
What if the victim was a drug dealer?



