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

possible that having to distinguish between Remembered and Known items in
this way may encourage participants to use a different strategy than in a
traditional recognition task and that this change may be to a more analytic
strategy. Thus, an additional hypothesis we will test is that making subsequent
RKG judgements after first identifying which picture was recognised may
encourage an analytic strategy of retrieval and reduce emotional enhancement
in recognition.
Section 1. Experiments 1A and 1B: Preference and Recognition
Section 1.1. Introduction
We have adapted the procedure used by Whittlesea & Price (2001) to
allow comparison of performance across positive, negative and neutral blocks
of stimuli. All other aspects of the design are a replication of Whittlesea &
Price (2001). We first assessed whether it was possible to obtain the mere
exposure effect with a stimuli set drawn from the International Affective
Picture System (IAPS) (Lang et al., 2001). We also wanted to see if there was
an emotional enhancement effect in these tasks with stimuli presented for the
very short durations used by Whittlesea & Price (2001). We predicted there
would be an emotional enhancement with greater recognition memory for
negative and positive than neutral photographs.
Section 1.2. Method
Design
In these experiments the influence of emotion (positive, negative and
neutral) on judgements of preference and recognition was examined.
Participants were shown negative, neutral and positive stimuli in a within-
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