Table 3.

Analyses of correlations between model-free and model-based measures of experimental behavior and clinical variables in patients in the Horizon Task

Variable	BPRS overall mean	BPRS Psychosis item mean	BPRS Depressio item mean	SANS overall mean	SANS Avolition/Anhedonia item mean
Model-based measures of performance
Prior mean	0.03	0.02	−0.09	0.05	0.10
Initial learning rate	−0.25**	−0.28**	−0.10	−0.06	−0.08
Asymptotic learning rate	0.08	0.09	0.03	−0.03	−0.03
Model-free measures of information seeking/directed exploration
Overall information seeking [Σp(high info)]	0.01	0.01	−0.04	0.02	0.06
Directed exploration [Δp(high info)]	0.06	0.03	0.12	−0.05	−0.06
Model-based measures of information seeking/directed exploration
Information weight (Horizon 1)	−0.02	−0.01	−0.14	0.04	0.08
Information weight (Horizon 6)	0.01	0.05	0.01	−0.11	−0.06
Change in information weight	0.02	0.08	0.16	−0.19*	−0.15
Model-free measures of behavioral variability/random exploration
Overall behavioral variability [Σp(low mean)]	0.17	0.23*	0.02	−0.01	−0.02
Random exploration [Δp(low mean)]	0.29**	0.39***	0.19	−0.03	−0.03
Model-based measures of behavioral variability/random exploration
Reward weight (Horizon 1 [1 3])	−0.03	−0.10	−0.04	−0.01	0.04
Reward weight (Horizon 6 [1 3])	−0.04	−0.17	−0.09	0.13	0.14
Reward weight (Horizon 1 [2 2])	0.09	0.11	0.08	0.11	0.12
Reward weight (Horizon 6 [2 2])	−0.25*	−0.29**	−0.20*	0.11	0.11
Change in reward weight ([1 3])	0.01	−0.01	−0.09	0.14	0.12
Change in reward weight ([2 2])	−0.15	−0.20*	−0.15	−0.02	−0.02

Note. Correlation values are Spearman coefficients. Correlations illustrated in Figure 6 are bolded. BPRS = Brief Psychiatric Rating Scale. SANS = Scale for the Assessment of Negative Symptoms.

^*p < 0.05.

^**p < 0.014.

^***p < 0.001.