Figure 1
From: Deficit of state-dependent risk attitude modulation in gambling disorder
Task and condition-defining simulation. (a) Goal-Instructed Gambling Task. A block is begun with block-quota instructions (left row). Participants choose between a risky option and a safe option, and receive a feedback indicating trial quota (units per trial; middle row). Block result is announced after 20 choice trials, and the next block is initiated (right row). (b) An example session sequence performed by one subject (subject #22 from HC group). Accumulation of units in a block (left). Color differences indicate block quotas. (right) Transition of trial quota. Dotted lines indicate boundary of five quota conditions. (c) Simulation results. Average units earned in 10 000 blocks by computer agents (RISKY model, EV model, random choice; left). Maximum units earned in the simulation (right). (d) Transition of relative dominance of RISKY model over EV model computed as CP-IDX. Negative CP-IDX indicates dominance of EV model, and positive CP-IDX indicates dominance of RISKY model. Indifferent point (CP-IDX=0; trail quota=310 unit per trial) indicates boundary of low/high-quota conditions, where optimal strategy is reversed. EV, expected value; HC, healthy controls.
