Experiments

Question 1

Define lab experiment

Answer 1

The iv is manipulated by the researcher and the experiment is carried out in a controlled setting away from ps natural setting

Question 2

Strengths of lab experiments

Answer 2

High controls mean research is standardised and easy to replicate so is reliable. More control over extraneous variables so cause an effect relationship can be established

Question 3

Weaknesses of lab experiments

Answer 3

Low ecological validity due to artificial settings. Chance of demand characteristics or experimenter effects may mean results lack validity

Question 4

Define field experiment

Answer 4

The iv is manipulated by the researcher but the experiment is carried out using ps in normal surroundings/ not contrived

Question 5

Strengths of field experiment

Answer 5

Behaviour is likely to have more ecological validity, less chance of demand characteristics

Question 6

Weaknesses of field experiment

Answer 6

Less control over extraneous variables which may bias the result also means less standardised/ replicable. There may be ethical issues if ps don’t know if in experiment

Question 7

Define quasi experiment

Answer 7

The iv is naturally occurring/ not manipulated by the researcher

Question 8

Strengths of a quasi experiment

Answer 8

Can study variables researchers can’t or would be unethical to manipulate e.g the weather or orphans. High levels of ecological validity, less demand cs?

Question 9

Weaknesses of a quasi experiment

Answer 9

Can be difficult to replicate, Lack of control over extraneous variables, may be more expensive or time consuming , lack of control over independent variable