An interesting aspect of Ernest Sosa's () recent thinking is that enhanced performances (e.g., the performance of an athlete under the influence of a performance-enhancing drug) fall short of aptness, and this is because such enhanced performances do not issue from genuine competences on the part of the agent. In this paper, I explore in some detail the implications of such thinking in Sosa's wider virtue epistemology, with a focus on cases of cognitive enhancement. A certain puzzle is then highlighted, and the solution proposed draws from both the recent moral responsibility literature on guidance control (e.g., Fischer and Ravizza ; Fischer ) as well as from work on cognitive integration in the philosophy of mind and cognitive science (e.g., Clark and Chalmers ; Clark ; Pritchard ; Palermos ; Carter ).. According to Ernest Sosa's virtue epistemology (e.g., Sosa , b, a, , passim), the normative structure of epistemic performances can be fruitfully modelled within a wider framework for assessing performances more generally. The basic features of the wider framework are as follows:A. Any performance with an aim can be evaluated along three dimensions: (i) whether it is accurate, (ii) whether it is adroit, and (iii) thirdly, whether it is accurate because adroit.B. A performance in some domain of endeavour D is accurate because adroit when its success issues from a (complete) D competence; such performance are apt.C. A competence, in a given domain of endeavour, is a disposition to perform well in that domain of endeavour.D. Competences have a 'triple-S' constitution-seat, shape and situation-with reference to which three kinds of dispositions can be distinguished: the innermost competence (seat), the inner competence (seat + shape), and the complete competence (seat + shape + situation).