Explain what is meant by a 'repeated measures design'.
- (a)Explain what is meant by a 'repeated measures design'.[1]
- (b)Suggest one advantage of using a repeated measures design, using any core study as an example.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- [1] 1 mark for definition of repeated measures
- Every participant does all / both of the levels / conditions (of the IV) = 1 mark
- [2] 1 mark for identifying advantage.
- 2nd mark for detail linked to core study
- ∞ overcomes problems with individual differences; (1 for identification)
- ∞ e.g. in Yamamoto, if one chimp was more helpful than another (this would confound an independent measures design); (1 for link)
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