In the study by Canli et al. (brain scans and emotions), the dependent variable of emotional arousal was measured by the participants pressing buttons 0, 1, 2 or 3.
- Suggest why it was necessary for the participants to press buttons rather than speaking or writing.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.
- [1] 1 mark for reason Because they were in a scanner so couldn't move much / couldn't move to speak / write = 1
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