Demand Characteristic

Sometimes during an experiment, a participant might pick up on some clue or bias from the researcher, the situation, or something about the experiment that gives the participant and idea of what type of response the researcher is looking for. This doesn't mean that the participant is right, just that something makes them act in a way they think is what the researcher wants and not necessarily in their normal manner. This is similar to oberver bias except that the bias is found in the participants and not the observers of the research.