Lab experiment
An experiment, which is conducted in a controlled environment, and the IV is manipulated.
Field experiment
An experiment that is conducted in a natural environment, where the IV is manipulated.
Natural experiment
An experiment where the experimenter takes advantage of a naturally occurring situation. IV is naturally realised.
Quasi experiment
An experiment where the IV cannot be manipulated; looks at pre-existing differences between people e.g sex.
Pilot study
Selecting a few people to try the study on, quickly.