86116
Experimental design
- Repeated measures
- Same ppts do each condition
- Tested against themselves
- Different forms of IV
- Different forms of IV
- Tested against themselves
- Evaluation
- No participant variables
- Fewer participants needed
- Fewer participants needed
- Order effects?
- Could remember something from previous day - practise effect
- Tired from previous day - fatigue effects
- Could remember something from previous day - practise effect
- No participant variables
- Same ppts do each condition
- Matched pairs
- Two groups, previously tested w/ same
amount of important variables
- One of each pair is put in either
experimental group or control group
- One of each pair is put in either
experimental group or control group
- No order effects
- Less individual differences
- Less individual differences
- Time consuming to match
- Wont eliminate all individual differences
- Twice as many ppts as RM
- Twice as many ppts as RM
- Wont eliminate all individual differences
- Two groups, previously tested w/ same
amount of important variables
- Independant groups
- People randomly allocated to two groups
- Perform only one of two conditions
- Perform only one of two conditions
- Evaluation
- Participant variables
- More participants required than RM
- More participants required than RM
- No order effects
- Less demand characteristics
- Only perform one condition - dont guess experiment
- Only perform one condition - dont guess experiment
- Less demand characteristics
- Participant variables
- People randomly allocated to two groups
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