Clarifying question: Did they actually change their minds on moral positions or did this study just give the appearance that they changed their minds? This is a question that we need to be asking as we look for meaning in this information, but not everyone here is thinking to ask it. Even when I proposed an alternate explanation to show how this could give the false appearance of people changing their minds when they did not, I got one response from somebody that didn't seem to realize I had just explained why this result might be due to people pretending to support those views when they do not. (I have made this even more explicit.) I think it might be a good idea to include the clarifying question at the end of the original post.