The argument from reason-possession does not establish psychologism about motivating reasons.

Since motivating reasons are considerations that an agent takes to favour acting, and since the reasons that favour acting are facts, it might seem that motivating reasons are also facts or at least putative facts, rather than mental states. However, the view that they are mental states was, as noted earlier, the dominant view till the turn of the 20th century, and it is still very popular today. A seemingly compelling argument for adopting psychologism for motivating reasons is the following. F