Figure 3

Partial correlations (left) for increased noradrenaline turnover (NA TR: Ln MHPG/NA) with increased Stroop-test interference scores in healthy controls (r = +0.34, P = 0.009), and (middle) for decreased NA TR with increased Stroop interference scores in patients with schizophrenia (r = -0.26, P = 0.01). But, (right) decreases of NA TR are associated with better verbal fluency in patients with schizophrenia (r = -0.29, P = 0.004).