Experimental designs are the ways that the researcher allocates the participant to their experimental groups. The experimental designs are: Independent Groups, Repeated Measures and Matched Pairs.
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Independent Groups Design
Participants are split into experimental groups and each group completes one condition.
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Positive Evaluation of the Independent Group Design
As participants only complete one condition the chance of them expressing order effects and guessing the purpose of the study.
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Negative Evaluation of the Independent Group Design
The study will suffer from participant variables as different people complete different conditions therefore the effect might be due to individual differences rather than the manipulation of the IV
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Repeated Measures Design
Researcher split the ppts into experimental groups and they complete all conditions.
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Positive Evaluation of the Repeated Measures Design
Minimises participant variables as the same people are completing both conditions so the results would not be affected by individual differences.
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Negative Evaluation of the Repeated Measures Design
Participants would experience order effects as they complete two conditions so they could guess the purpose of the study and work towards or against it.
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Matched Pairs Design
Researcher matches ppts based on specific characteristics operationlised to the study and then randomly allocates the ppts to a group.
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Positive Evaluation of the Matched Pairs Design
There will be no order effect as participants only take part in one condition.
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Negative Evaluation of the Matched Pairs Design
It is difficult to match participants identically.
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Other cards in this set
Card 2
Front
Participants are split into experimental groups and each group completes one condition.
Back
Independent Groups Design
Card 3
Front
As participants only complete one condition the chance of them expressing order effects and guessing the purpose of the study.
Back
Card 4
Front
The study will suffer from participant variables as different people complete different conditions therefore the effect might be due to individual differences rather than the manipulation of the IV
Back
Card 5
Front
Researcher split the ppts into experimental groups and they complete all conditions.
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