 Approved list reliabilism is a theory of the factors that influence our attributions of epistemic justification. It is thus naturally construed as an attributor theory—a theory of the conditions under which a justification attribution (that is, a sentence of the form, “S is justified in believing p”) is judged to be true or false. In this regard, it parallels attributor theories of knowledge (e.g., DeRose 1992). There are different ways of developing an approved list attributor theory more precisely. For instance, a contextualist implementation might hold that a justification attribution is true if and only if the subject’s belief-forming process belongs to the speaker’s approved list. Alternatively, one could adopt an assessor-relativist implementation, according to which the truth-conditions of justification attributions are relativized to contexts of assessment (cf. MacFarlane 2005). An assessor-relativist version of the approved list might hold that a justification attribution is true at a context of assessment if and only if the subject’s belief-forming process belongs to the assessor’s approved list.