In the study by Canli et al. (brain scans and emotions), several types of quantitative data were collected, including data from fMRI (functional Magnetic Resonance Imaging).
- (a)Describe two quantitative measures in this study, other than the data from fMRI.[4]
- (b)(i)For one of the quantitative measures you described in (a): Explain one reason why it may be a valid measure.[2]
- (b)(ii)Explain one reason why it may not be a valid measure.[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2021). The mark or mark type is shown in brackets.
- [1] Rating of emotional arousal/intensity;
- [1] On a scale of 0 = not / low to 3 = extremely emotionally intense / high;
- [1] Memory / recall / recognition of slides / scenes;
- [1] Number / percentage of slides remembered, familiar or forgotten;
- [1] Rating of emotional intensity: It is a linear scale indicating greater intensity;
- [1] Whereas data about remembered, familiar or forgotten was nominal/categorical so less informative;
- [1] Scale is standardised;
- [1] Each individual would be able to consistently say one stimulus was more (/less) intense;
- [1] Number/percentage of slides remembered, familiar or forgotten: Recalling a slide/scene is objective / not subjective;
- [1] Either it was forgotten/remembered/familiar or it wasn't;
- [1] No interpretation is required like there is for the rating scale;
- [1] P may lie;
- [1] Number/percentage of slides remembered, familiar or forgotten: It does not allow for graded responses;
- [1] Something might be remembered/familiar somewhat or very well and this cannot be recorded;
- [1] Rating of emotional intensity: It is subjective / not objective;
- [1] So interpretation of the scale is required by the participant, so there may be individual differences in use;
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