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

performance for negative, than positive, photographs. Participants were more
confident about their judgements of negative than positive photographs, and
gave more remember responses for negative than positive photographs.
The emotional enhancement in Remember responses found by Dahl et
al. (2006) is in a similar direction to other research examining Remember/
Know judgements with emotional stimuli which also found an advantage for
negative stimuli (e.g. Ochsner, 2000). This is in contrast to the findings from
Experiment 1 and 2, where an advantage was found for positive stimuli alone.
This may be due to methodological differences between these studies. In
Experiments 1 and 2 we used a two-alternative forced choice recognition
judgement, whereas Dahl et al. (2006) and Ochsner (2000) both used a one-
step RKN judgement of a single photo. Differences have been found in the
proportion of Remember / Know responses given dependent upon whether a
one-step Remember, Know, New judgement is made or a two-step judgement
where first an old-new judgement is made and then a Remember / Know
judgement (Eldridge, Sarfatti, & Knowlton, 2002).
The aim of this study is to examine the effect of task upon memory
performance and the influence that emotion has upon memory using a within-
participants paradigm, in contrast to the between participants design used in
Experiments 1 and 2. We will assess memory performance using the tasks of
straightforward recognition and recognition followed by RKG response that
were used in Experiments 1 and 2. In addition a condition will be included
where the recognition task is followed by a confidence judgement, this will
give insight into whether the effects of the additional RKG judgment are due to
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