I'm studying for a social psychology test I have tomorrow, and while studying I noticed something odd about either the explanation or data my professor gave the class in lecture. It concerns a study of empathy and altruism, and I noticed that if he explained it a certain way, then the data he gave us is correct. However, after reading a handful of articles (including the original one) and books, I realize that his explanation is wrong, and thus his data should be reversed. I've emailed him but he won't reply, probably because it's the weekend. The course discussion board is rather useless, but someone on there did confirm that I didn't take notes incorrectly. He gave what appears to be bad data and an inaccurate explanation. The problem is: on the test, I don't want to have to debate between giving the "true" explanation and answer (the one everyone heard in class) and the actual answer (the one written in plain English in all these damn articles I've read while trying to figure this out). Has this ever happened to you? What do you do in this sort of situation? Go with what you've learnt in class or use the information you believe is true?