Scores on each of these subtests were normalized and the z scores averaged to create three different composite scores for each individual: a Representational Quality score, a Recall Performance score, and an Executive Function score. The Representational Quality score consisted of performance on the high ambiguity condition of the visual discrimination task. The Recall Performance score comprised immediate and delayed recall scores from the Logical Memory, Paired Associates, and Rey Complex Figure tests. The Executive Function score comprised Verbal Fluency, Trails B, and Digit Span scores. The group was median split on each composite score to divide participants into high and low scoring groups in each of the three factors. One-way between-participants analyses of variance confirmed that the high and low scoring groups differed significantly on their respective composite scores (Representational Quality Groups: F(1, 41) = 74.69 p < .001; Recall Performance Groups: F(1, 41) = 76.13, p < .001; Executive Function Groups: F(1, 41) = 49.34 p < .001). A full summary of the demographic information and composite scores for each group can be found in Table 5.