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Task description and a Win-Stay-Lose-Shift trial explanation. (A) Participants performed a probabilistic instrumental learning task adapted from Pessiglione et al.18 (B) Example of successful Win-Stay-Lose-Shift (WSLS) behaviour (i.e. Win-Stay and Lose-shift trials) as well as an example of aberrant WSLS behaviour (i.e. Win-Shift trial). WSLS measures the degree to which the outcome of the previous trial influences the switching behaviour of the current trial. RT = reaction time.
