Experimental design:
Repeated measures –
All participants take part in both conditions, 1st then 2nd
Results of first condition compared to second
Pros: fewer participants needed, no individual differences
Cons: participant effects such as demand characteristics, order effects
Independent groups –
Group split, each half takes part in one condition
Results of condition 1 compared to condition 2
Pros: no order effects, fewer demand characteristics
Cons: individual differences between participants, need more participants
Matched pairs –
Matches found, one of each pair in each condition
Results of condition 1 compared to condition 2
Pros: reduces individual differences between groups, reduces demand
characteristics
Cons: difficult to match pairs
Repeated measures –
All participants take part in both conditions, 1st then 2nd
Results of first condition compared to second
Pros: fewer participants needed, no individual differences
Cons: participant effects such as demand characteristics, order effects
Independent groups –
Group split, each half takes part in one condition
Results of condition 1 compared to condition 2
Pros: no order effects, fewer demand characteristics
Cons: individual differences between participants, need more participants
Matched pairs –
Matches found, one of each pair in each condition
Results of condition 1 compared to condition 2
Pros: reduces individual differences between groups, reduces demand
characteristics
Cons: difficult to match pairs
