Our work has used functional MRI in humans to investigate the prefrontal and basal ganglia mechanisms that support decision-making, reward processing, reinforcement learning, and action. These approaches have recently been used to study the neural basis of social cognition. Most recently, work has focussed on the anterior cingulate cortex (ACC). We report that parts of the ACC signal the value of rewards gained by others during social interactions. Using reinforcement learning-based computational modelling, we have also found that certain regions of the ACC signal prediction errors vicariously for others’ erroneous predictions when scanned participants monitor and instruct learning in others. Funding: ESRC. Further details: http://www.pc.rhul.ac.uk/sites/NeuroscienceLab/?page_id=286

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