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

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esults will be found as for Experiment 6 with a central/peripheral trade-off for<br />

negative, but not neutral or positive, stimuli. We hypothesise that a<br />

central/peripheral trade-off in memory for scenes containing negative objects<br />

will be associated with attentional effects at encoding.<br />

Section 4.2. Method<br />

Design<br />

A within-participants mixed list design was used with scenes of a<br />

neutral background and either a negative, neutral or positive object to examine<br />

participants’ eye movements at the time of encoding.<br />

Participants<br />

Twenty-one participants were tested but data from 3 were excluded as<br />

their eye movement data did not record accurately (see Results for details).<br />

Data from 18 participants (11 female) is included in the analysis. All<br />

participants were native English speaking University of <strong>Nottingham</strong> students<br />

(mean age = 20.11 years, SD = 4.90). Informed consent was obtained from all<br />

participants. Participants received an inconvenience allowance of £4 for their<br />

voluntary participation.<br />

Materials<br />

The same stimuli were used in this experiment as in Experiment 6. The<br />

location of some of the objects in the scenes was altered from Experiment 6 to<br />

counterbalance the location of the object in the scenes; for 50% of trials the<br />

object was located centrally (in the same location as the pre-trial fixation cross)<br />

and for 50% of trials the object appeared at a non-central location, requiring<br />

participants to make an eye movement to fixate on the object and away from<br />

the fixation cross. A Sensorimotoric iViewX Remote Eye-tracking Device was<br />

161

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