Fig. 8.

Change in optimal policy during single difficulty tasks with increasingly biased prior beliefs. a $\mathbb{P}(U\in {\mathcal{U}}_{+})=0.50$; b $\mathbb{P}(U\in {\mathcal{U}}_{+})=0.70$; c $\mathbb{P}(U\in {\mathcal{U}}_{+})=0.97$. For all three computations, up-probability is drawn from u ∈{0.30,0.70} and the inter-trial intervals are D _C = D _I = 150