Fatigue effect score

Liking scores were submitted to ANOVA per group with position in the series (rather than product) and subject as factors. Results showed no significant effect of position (Fposi on = 0.96 p = 0.44). In other words, when asked to rate seven samples, elderly people, and even dependent elderly people, did not exhibit any boredom or fatigue effects (Fig. 23.4). 

Repeated measures ANOVA carried out on the data revealed that differences between the conditions were unlikely to have arisen due to sampling error (Fj = 8.39, p = 0.004). An overall effect size of 0.48 (Partial Eta squared) showed that almost 50 per cent of the variation in error scores can be accounted for by differing fatigue levels. Post-hoc comparisons revealed that mean reaction time was significantly slower before the non-rested simulation than at baseline M =QAA, f = 2.53, p = 0.032). 

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