For $10, I once did some kind of research study by the psychology department. I went to a lab, sat at a computer, and answered a quiz. To this day, I'm certain

For $10, I once did some kind of research study by the psychology department. I went to a lab, sat at a computer, and answered a quiz. To this day, I'm certain there was some sort of test being done to prime me to answer questions a certain way, or something along those lines, but no one ever told me just what I was being the lab rat for.