Anhedonia vs. Symptom severity, scatterplots. A. In individuals with OCD, total Y-BOCS was normally distributed (Shapiro-Wilks p = 0.64); anhedonia was not normally distributed (Shapiro-Wilk p = 0.01); Y-BOCS significantly correlated with severity of anhedonia (Spearman’s ρ = 0.51, p = 0.006). B. In individuals with HD, total Saving Inventory Revised (SI-R) was normally distributed (Shapiro-Wilks p = 0.61); anhedonia was not normally distributed (Shapiro-Wilk p < 0.01); SI-R significantly correlated with severity of anhedonia (Spearman’s ρ = 0.56, p = 0.03). C. In individuals with PTSD, emotional numbing subscale of CAPS (C2) was normally distributed (Shapiro-Wilks p = 0.33); anhedonia was normally distributed (Shapiro-Wilk p > 0.10); it significantly correlated with severity of anhedonia in individuals with PTSD (r = 0.39, p = 0.04).