Experimental methods

1. Laboratory Experiment

• Manipulation of variables.

• Randomisation- participants are randomly allocated to a condition.

• Control - If all variables are controlled - cause & effect established.

Advantages:

• Easy to control variables.

• Procedures can be replicated.

Disadvantages:

• Lack of external validity (can’t generalise)

• Possible demand characteristics.

2. Field Experiment

Takes place in a natural setting. Attempt to improve realism of the research.

• Manipulated IV, measures DV.

• Cause & effect can…