Types of experiment
- Created by: study-shauna
- Created on: 03-02-18 10:18
View mindmap
- Types of experiment
- Laboratory experiment - conducted in a controlled setting. Participants know they're a part of the study, although maybe not the true aims.
- There is great control over the variables, so we can be more certain that a change in the DV is due to the IV and not an extraneous or confounding variable, making it very internally valid.
- The participants know they're part of a study and the environment is very contrived, therefore participants may change their behaviour. So it lacks some ecological validity.
- Field - controlled experiment that is conducted out laboratory. The IV is still manipulated so causal relationships can still be demonstrated. Participants are usually unaware that they're in a study.
- Participants usually don't know they're taking part in an experiment, so they aren't likely to change their behaviour, therefore there's good internal validity.
- The environment isn't as highly controlled as a lab, therefore it is hard to control extraneous variables which may affect the DV. Also, as people don't know they're participating in a study, it could be considered ethically incorrect to manipulate and record their behaviour.
- Natural - the experimenter has not directly manipulated the IV - it varies 'naturally'. It is often used when you can't deliberately manipulate the IV for ethical or practical reasons.
- It can't demonstrate causal relationships because the IV isn't directly manipulated.
- It enables psychologists to study "real" problems, like the effect of a disaster, that can't be controlled. These studies ave increased mundane realism and ecological validity.
- Laboratory experiment - conducted in a controlled setting. Participants know they're a part of the study, although maybe not the true aims.
Comments
No comments have yet been made