Describe what is meant by 'order effects', using any examples.

Mark scheme

Marking points from the official mark scheme (May/June 2018). The mark or mark type is shown in brackets.

1. 1 mark for basic definition. Plus 5 marks for detail/examples.
2. order effects are consequences of doing tests/tasks more than once;
3. such as happens in a repeated measures design;
4. or in a longitudinal study;
5. can include fatigue effects;
6. get worse with repetition;
7. e.g. getting bored;
8. or tired;
9. can include practice effects;
10. get better with repetition;
11. such as remembering the answers to a test;
12. such as getting more skilled on a physical task;