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

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Appendix 5.2. Analysis of Variance in Ratings of Encoding Task<br />

for Experiments 9 and 10<br />

The variance in ratings for the encoding task for Experiments 9 and 10<br />

was analysed by calculated the standard deviation in ratings given by each<br />

participant for scenes with a negative, neutral or positive object. This revealed<br />

a greater degree of variance in the ratings given in Experiment 9 where the<br />

scenes were blocked into those of the same emotion, compared to the ratings<br />

given in Experiment 10 when the scenes were presented in a<br />

pseudorandomised order (See Table 5.1.7). Participants were given a cue as to<br />

the emotion of the next scenes in each Experiment, although in Experiment 9<br />

this was only indicated at the start of each block, whereas in Experiment 10<br />

this was indicated before each item. Paired samples t-tests were used to<br />

statistically compare these values between Experiments. This revealed no<br />

statistically significant difference between the values for Experiment 9 and 10<br />

(Negative: t(34) = 1.07, p = .29; Neutral: t(34) = 1.37, p = .18; Positive t(34) =<br />

1.35, p = .19).<br />

Table 5.1.7. Average standard deviations for ratings of approach / avoidance in<br />

encoding task for Experiments 9 and 10<br />

Experiment 9 Experiment 10<br />

Negative 1.31 1.16<br />

Neutral 1.12 0.95<br />

Positive 1.23 1.05<br />

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