It's a classic psychological test that was first used over 40 years ago. Back then, you didn't see the people you were shocking, you just heard them. The test was designed to see how people can conform to authority even in the face of something very unpleasant. It was rightly heralded as a great insight into human behaviour. BB made good use of it, but I thought one of the "scientists" would have got onto the experiment and realised what was going on.

What were you watching ? It was Lydia that wanted to keep carrying on all the time.

Yes I thought Benedict would have been aware of it

he talks the most sense out of everyone

s'ok, I was only joshing, just never go out again ok?

I am 99.9% sure Benedict knew what was going on. Student teachers must nearly all come across it and there was a perceptible dither from him at the beginning while he decided how to play it.

She looked as if she was relishing every minute of it. Quite disturbing really.

Yes, the Milgram experiment http://en.wikipedia.org/wiki/Milgram_experiment

I'm amazed none of the 'scientists' had heard of it

I'm with you on this. The way he questioned the other two in order to get them to decide what to do seemed very strange

Yes. It's possible he realised he'd have to play along in order to pass.