The famous Good Samaritan study is quite well known in psych one classes, at least for those who don't have psych one under the belt or just forgot. Dan Batson's career has really been about the psychology of altruism. He points out that these seminary students hurried over the body of a stranger who needed help wasn't just to say that people are callous and like it doesn't matter that we have moral principles. Who you were trying to help was just a different person in your head.