Figure 6.

Difficulty of the given decision-making problem and threshold precision control. While retaining the higher reward probability in the two-armed bandit problem (P₀ = 0.9), the lower reward probability P₁ was set to (a) 0.5 and (b) 0.7 to examine the decision difficulty. The CDR increases more rapidly in the easier decision-making problem (a) than in the harder one (b). In addition, a decrease in the number of threshold levels prevents the system from reaching the correct decision, especially for harder problems, due to insufficient exploration. c CDR at cycle 200 as a function of decision difficulty.