Chris Hansen Effect
The effect on ne'er-do-wells caused by the presence of an apparent authority that is not law enforcement (e.g. Chris Hansen in Dateline: To Catch A Predator). The Effect usually causes the affected individual to spill their guts and make emotional pleas, or say "I'm just being stupid, I guess".
"I saw a man jerking off in his car as I was walking past, and I knocked on the window to warn him there were police hanging around. I guess I must've put the ol' Chris Hansen Effect on him, since as soon as he realized he had been caught, he began telling me about how shit his life is and how this was his first time."
The Chris Hansen Effect
When somebody who is not law enforcement, that has no right to detain you and has no authority over you, is able to make you play by their rules just by their presence.
"Woah, I really wouldn't run from your dad if he caught me doing something illegal."
"Yeah, that's the Chris Hansen Effect."
"Yeah, that's the Chris Hansen Effect."