Hume's Is-Ought Gap as a Continuum, Not a Chasm

The Humean is-ought distinction — the claim that no normative conclusion can be derived from purely descriptive premises — has functioned as a foundational axiom of modern epistemology. Yet its philosophical foundations are considerably less secure than the standard Enlightenment picture suggests. Putnam's collapse of the fact-value dichotomy, Bhaskar's dialectical arguments, and Quine's dissolution of the analytic-synthetic distinction all converge on a similar conclusion: the relationship between descriptive and normative claims is better understood as a continuum with real but non-absolute distinctions, rather than an unbridgeable logical chasm.

The implications for Metapsychology are profound. Under a strict fact-value separation, any normative claim within psychology — that certain forms of reasoning are more adequate, that developmental stages represent genuine cognitive progress — is automatically relegated to the domain of subjective preference, outside the scope of scientific inquiry. A more porous is-ought boundary, however, opens the possibility that normative facts are genuinely facts, amenable to demonstration and theoretical integration.

This is precisely the picture that the developmental tradition from Baldwin through Piaget to the neo-Piagetians has always implicitly presupposed. The claim that a sixteen-year-old's causal reasoning is not merely different from but superior to a four-year-old's is not a cultural imposition but a defensible normative-empirical claim. A psychology that systematically excludes such claims in the name of value-neutrality does not achieve greater scientific rigor — it produces a framework inadequate to its own subject matter. Recognizing this transforms developmental psychology from a mere catalogue of cognitive changes into a discipline that can speak meaningfully about what it means for a mind to deepen into reality.