Ecological Validity:
- Due to mock trials needing to be used – a lack of ecological validity is the main criticism of research in this area.
- Ross et al - used a videotaped mock trial which wasn’t actual live evidence. The emotion in Ross’ study wouldn’t be the same as a real-life child’s.
- Castellow – only used photo’s as attractiveness can be influenced by personality.
- Penrod and cutler – Doesn’t represent witness confidence as someone doesn’t actually give a percentage of their confidence.
Several differences exists between real trials and mock trials:
- The livelihood of the defendant will not be hanging in the balance of the jury’s decision
- Real trials can go on for weeks. A mock trial will be a very short process in comparison
- Mock jurors will often simply have to read evidence, rather than it being presented by ‘live’ witnesses – less emotion
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