He pulled a face, then said: “The people who buy them can't possibly think visitors will think they have real Monets in their house ... can they?”

The participants were asked to view paintings from both unknown and famous artists (Monet, Van Gogh, Picasso and others), as well as photographs that depicted similar subjects.

Remember in Clueless when Cher describes someone as “a full-on Monet…from far away, it’s OK, but up close it’s a big old mess”?

It was as if nature created a Monet/Dali hybrid just for me. It vanished within minutes..

But this rarely works-after all, a knowledgeable collector isn't going to buy a stolen Monet that he can't display publicly.