Experimental design Flashcards
Repeated measures design
Participants take part in both conditions of the experiment.
Strengths of repeated measures
No participant variables
Requires half as many participants
Weaknesses of repeated measures
Order effects
Demand characteristics
Independent group design
Participants only take part in one condition of the experiment and can be randomly allocated to the two groups.
Strengths of independent group design
No order effects
Less likely to produce participant variables
Weaknesses of independent group design
Requires twice as many participants
Demand characteristics
Matched pairs design
Participants are matched in each condition for characteristics that may have an affect on their performance.
Strengths of matched pairs design
Reduces participant variables
No order effects
Weaknesses of matched pairs design
Time-consuming
Pre-testing may not be accurate
