Fig. 2: Symptom similarity.

a Between-subject similarity matrix for normalised psychometric measures. Each position in the matrix represents the correlation coefficient across all psychometric scores for a pair of individuals. Grey bars separate the conventional diagnostic criteria, delineating matrix regions of within- (diagonal) and between-group (off-diagonal) similarity. b Plots of average similarity of each patient to those with the same diagnosis (within-group) and those with the other two diagnoses (between-group) for each diagnostic group.