Yeah. As I've said before, modern studies have shown that people given double-blind taste tests will say whichever wine they are told is more expensive will taste better. Or people given double-blind taste tests with real and veggie sausages will say the real one tastes better (hopefully the test was done with no vegetarians).
It's all psychology.
Indeed, a friend of mine invited a couple of foreigners to a fine restaurant once and they really liked what they ate there, that is until my friend not realizing that he shouldn't have said anything, told them that some of it was snails and frog legs. The two foreigners who were so happy a second before, looked like they were going to throw up...