 Norton and Miller (2019) present what they describe as a psychologistic theory of metaphysical explanation; metaphysical explanations have truth conditions that appeal to the dispositions of agents evaluating the explanation, as well as necessitation relations between the explanans and explanandum. Since these necessitation relations are objective this is not an entirely antirealist account of metaphysical explanation, but from the way in which mental states vary between individuals it follows that metaphysical explanations are only true or false relative to a particular context of assessment. It is thus to be considered a broadly antirealist account.