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Reversal learning is impaired and set shifting is intact in the ASST task after mAMPH treatment. (a) mean (±SEM) trials to reach criterion (six successive correct trials) for each phase of the attentional set shift paradigm. (b) mean (±SEM) errors made in each phase of the ASST paradigm (n=9 mAMPH, n=7 SAL). See Materials and Methods for details. *p⩽0.05; **p<0.001.
