Covert Observation: This is when research participants are unaware that they're being observed for a study. It's another form of deception used in psychological research.
Demand Characteristics: These are cues that inform participants about what is expected from them which can influence their behavior during an experiment. Deception can help minimize these characteristics.
Informed Consent: This is an ethical requirement where participants must be fully informed about the procedures and risks involved in research before participating. However, in cases involving deception, full information cannot be provided upfront.