Among philosophers studying belief, normativism is an increasingly popular position. According to normativism, beliefs are necessarily, as part of their essential nature, subject to certain evaluative standards. In particular, beliefs are necessarily defective in a certain way if they are false or unresponsive to counterevidence.
In this way, believing is unlike supposing or imagining. If I merely suppose that P is true, nothing need have gone wrong if P is false. The supposition is in no way defective. Similarly, if I imagine Q and then learn that evidence supports not-Q, nothing need have gone wrong if I continue imagining Q. In contrast, if I believe P, the belief is in a certain way defective ("incorrect") if it is false and I have failed as a believer (I've been irrational) if I don't reduce my confidence in P in the face of compelling counterevidence.
But what is a normative essence? Several different things could be meant, some plausible but tepid, others bold but less plausible.
Let's start at the tepid end. Swimming hole is, I think, also an essentially normative concept. If I decide to call a body of water a swimming hole, I'm committed to evaluating it in certain ways -- specifically, as a locale for swimming. If the water is dirty or pollution-tainted, or if it has slime or alligators, it's a worse swimming hole. If it's clean, beautiful, safe, sufficiently deep, and easy on your bare feet, it's a better swimming hole.
But of course bodies of water are what they are independently of their labeling as swimming holes. The better-or-worse normativity is entirely a function of externally applied human concepts and human uses. Once I think of a spot as a swimming hole, I am committed to evaluating it in a certain way, but the body of water is not inherently excellent or defective in virtue of its safety or danger. The normativity derives from the application of the concept or from the practices of swimming-hole users. Nonetheless, there's a sense in which it really is part of the essence of being a swimming hole that being unsafe is a defect.
[Midjourney rendition of an unsafe swimming hole with slime, rocks, and an alligator]
If belief-normativity is like swimming-hole-normativity, then the following is true: Once we label a mental state as a belief, we commit to evaluating it in certain ways -- for example as "incorrect" if untrue and "irrational" if held in the teeth of counterevidence. But if this is all there is to the normativity of belief, then the mental state in question might not be in any way intrinsically defective. Rather, we belief-ascribers are treating the state as if it should play a certain role; and we set ourselves up for disappointment if it doesn't play that role.
Suppose a member of a perennially losing sports team says, on day one of the new season, "This year, we're going to make the playoffs!" Swimming-hole normativity suggests that we interpreters have a choice. We could treat this exclamation as the expression of a belief, in which case it is defective because unjustified by the evidence and (as future defeats will confirm) false. Or we could treat the exclamation as an expression of optimism and team spirit, in which case it might not be in any way defective. There need be no fact of the matter, independent of our labeling, concerning its defectiveness or not.
Advocates of normativism about belief typically want to make a bolder claim than that. So let's move toward a bolder view of normativity.
Consider hearts. Hearts are defective if they don't pump blood, in a less concept-dependent way than swimming holes are defective if they are unsafe. That thing really is a heart, independent of any human labeling, and as such it has a function, independent of any human labeling, which it can satisfy or fail to satisfy.
Might beliefs be inherently normative in that way, the heart-like way, rather than just the swimming-hole way? If I believe this year we'll make the playoffs, is this a state of mind with an essential function in the same way that the heart is an organ with an essential function?
I am a dispositionalist about belief. To believe some proposition P is, on my view, just to be disposed to act and react in ways that are characteristic of a P-believer. To believe this year we'll make the playoffs, for example, is to be disposed to say so, with a feeling of sincerity, to be willing to wager on it, to feel surprise and disappointment with each mounting loss, to refuse to make other plans during playoff season, and so on. It's not clear that a cluster of dispositions is a thing with a function in the same way that a heart is a thing with a function.
Now maybe (though I suspect this is simplistic) some mechanism in us functions to create dispositional belief states in the face of evidence: It takes evidence that P as an input and then produces in us dispositional tendencies to act and react as if P is true. Maybe this mechanism malfunctions if it generates belief states contrary to the evidence, and maybe this mechanism has been evolutionarily selected because it produces states that cause us to act in ways that track the truth. But it doesn't follow from this, I think, that the states that are produced are inherently defective if they arise contrary to the evidence or don't track the truth.
Compare anger: Maybe there's a system in us that functions to create anger when there's wrongdoing against us or those close to us, and maybe this mechanism has been selected because it produces states that prepare us to fight. It doesn't seem to follow that the state is inherently defective if produced in some other way (e.g., by reading a book) or if one isn't prepared to fight (maybe one is a pacifist).
I conjecture that we can get all the normativity we want from belief by a combination of swimming-hole type normativity (once we conceptualize an attitude as a belief, we're committed to saying it's incorrect if false) and normativity of function in our belief-producing mechanisms, without treating belief states themselves as having normative essences.