Experimental designs
- Created by: charliemc908
- Created on: 09-02-23 09:45
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- Experimental design
- Repeated measures
- Definition: Where all participants take part in all conditions of an experiment.
- Strengths
- Results will not be subject to individual differences between ppts.
- Puts more confidence that dv changes are solely due to manipulation of iv.
- Results will not be subject to individual differences between ppts.
- Weaknesses
- Risk of observing order effects e.g. fatigue of ppts.
- Independent measures
- Definition: Where different ppts take part in one different experimental condition.
- Strengths
- Order effects cannot be observed as no ppts will be used for more than one condition.
- Data collection will be less time consuming if all conditions of the experiment can be conducted at the same time.
- Weaknesses
- Different ppts need to be recruited for each condition
- This is time consuming and expensive.
- Different ppts need to be recruited for each condition
- Matched pairs
- Definition: Where ppts take part in only one experimental condition, but are recruited to be similar in characteristics to matched ppts in other conditions e.g. IQ, age, gender.
- Strengths
- Order effects cannot be observed.
- Weaknesses
- Matching ppts is difficult
- Different ppts need to be recruited for each condition- expensive and time consuming.
- Repeated measures
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