This paper addresses two key issues in the study of discursive constructions: the strategic use of ‘justificatory support’ aimed at the legitimisation of assertions, and the mystification of responsibility for epistemic stance acts in the discourse. The paper argues that the use of epistemic stance resources contributes to the speaker's strategic aim of legitimising assertions, which plays an indirect role in the legitimisation of actions. An additional dimension of legitimisation is the inter/subjective anchoring of these stance acts, which by default (...) index the speaker as conceptualiser, thus assigning responsibility and accountability for the validity of the communicated information. This paper explores these issues and presents results on the stancetaking patterns and the expression of subjectivity and intersubjectivity in the discourse of a parliamentary inquiry and a public inquiry. (shrink)