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PDF (PhD Thesis Susan Chipchase) - Nottingham eTheses ...

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alternatives (Lockhart, 2000). The consideration of bias is particularly<br />

important when investigating the influence of emotion on memory as emotions<br />

of different types have been found to have different effects on recognition bias.<br />

Phaf & Rotteveel (2005) found that induced positive affect led to a more liberal<br />

recognition criterion for test words, and that negative affect led to more<br />

cautious tendencies without any effect on accuracy of recognition memory.<br />

Levine & Bluck (2004) found similar results with memory for a real world<br />

event in that participants who were happy about the event having occurred had<br />

a lower threshold for judging events as having occurred than participants who<br />

had a negative reaction to the original event. Bless et al. (1996) found that<br />

participants who had a happy mood induced were more likely to ‘recognise’<br />

information that was consistent with their general knowledge about eating in a<br />

restaurant, whereas people with a sad mood induced tended to be more<br />

conservative and accurate in their judgements. Bless et al. (1996) also found<br />

that happy participants outperformed sad ones when performing a secondary<br />

task whilst listening to a story on which their memory was later tested, and<br />

took this to suggest that happy moods do not decrease cognitive capacity or<br />

processing motivation in general, because if this were the case an impaired<br />

secondary-task performance would be expected. In contrast, Forgas (1998)<br />

found that positive mood reduced and negative mood improved memory<br />

performance. Although different information processing strategies have been<br />

shown with positive and negative moods these are not always related to the<br />

objective accuracy of accounts and it appears that people may believe they<br />

remember happy events more clearly than they do (Levine & Bluck, 2004).<br />

26

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