Experimental design (OCR A-Level Psychology): Flashcards
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Practise the cards
15 cards from this deck
Experimental design definition
Experimental design definition
How participants are used/arranged across different conditions in experiments
Independent Groups design
Independent Groups design
Two separate groups experience different conditions
Repeated measures design
Repeated measures design
All participants experience both conditions
Matched pairs design
Matched pairs design
Pairs matched on variables, assigned to different conditions
Solution to participant differences in Independent Groups
Solution to participant differences in Independent Groups
Random allocation
Participants needed: Independent Groups vs Repeated measures
Participants needed: Independent Groups vs Repeated measures
Twice as many vs fewer
Key advantage of Repeated measures
Key advantage of Repeated measures
Comparing 'like with like'
Order effects in Repeated measures cause
Order effects in Repeated measures cause
Fatigue/boredom or practice affects performance
Solution to order effects in Repeated measures
Solution to order effects in Repeated measures
Counterbalancing
What order acts as in Repeated measures
What order acts as in Repeated measures
Confounding variable
What Matched pairs attempts to control
What Matched pairs attempts to control
Participant variables
Limitation of matching in Matched pairs
Limitation of matching in Matched pairs
Can never be matched exactly
Task frequency in Repeated measures
Task frequency in Repeated measures
At least twice
Independent Groups advantages
Independent Groups advantages
Order effects & demand characteristics less likely
Repeated measures advantage: participant variables
Repeated measures advantage: participant variables
More carefully controlled