From the study by Pozzulo et al. (line-ups):

Mark scheme

Marking points from the official mark scheme (May/June 2024). The mark or mark type is shown in brackets.

1. [1] The target was replaced with a similar foil/foil had similar features to the target.
2. [1] All of the pictures were shown simultaneously.
3. [1] The target and target replacement were always in the same position.
4. [1] The target's line-up position was randomised.
5. [1] There were four photographs/foils in the line-up.
6. [1] A silhouette was in the line-up (to represent the possibly of an absent target).
7. [1] Each participant watched four videos.
8. [1] These were presented on a laptop/computer/on a screen.
9. [1] These were in a random order.
10. [1] The photo array/line-up was shown after each video.
11. [1] The position of the replacement was counterbalanced across photo arrays/line-ups.
12. [1] None of the (four) photographs had been in the video.