Used Computer Monitors
Psychological laboratories are typically nothing more than a quiet room with a computer, a screen, and often a specialist keyboard fit for extremely precise reaction time measurement. For most research, it is essential that participants (also called subjects) can concentrate. The room must be quiet at all times. If this cannot be guaranteed, the experimenter might consider using earplugs. It is recommended that the participant is supervised for the duration of the study. This way, the experimenter can guarantee that the participant carries out the experiment, and that if the participant has a problem, he or she can ask for clarification.