experimental designs
- Created by: gracemae31
- Created on: 26-04-21 13:20
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- experimental designs
- repeated measures
- all pp complete both conditions
- - can't always compare
- - if complete both conditions, 2nd time may get 'order effects'
- e.g improved performance = practise effects & reduced performance= fatigue effects
- counter balance e.g half pp and do a A then B & vise versa
- e.g improved performance = practise effects & reduced performance= fatigue effects
- - if complete both conditions, 2nd time may get 'order effects'
- + rules out individual differences
- e.g 2 bits of data per pp so saves researcher Time
- matched pairs
- match A to similar person in B
- e.g bandora and Bobo dolls - children matched on aggression n levels
- + pp variables can be controlled and no chance of order effects
- -time consuming
- -may not find perfect match
- how do you match etc???
- -may not find perfect match
- match A to similar person in B
- independent groups
- 2 separate groups only complete one
- e.g autism compared to non autism
- + compare experiment
- + no order effects
- - only collect 1 piece of data per pp
- - individual differences
- 2 separate groups only complete one
- repeated measures
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