A philosophical doctrine asserting that common‑sense ‘folk‑psychological’ mental categories (e.g., beliefs, desires, intentions) are theoretical posits that systematically misrepresent the causal structure of cognition and therefore should be abandoned and replaced by neurobiological or other scientifically superior descriptions of mind.

Principle

If a class of theoretical concepts persistently fails to improve explanatory or predictive power relative to rival scientific theories, those concepts are candidates for ontological elimination rather than revision.

Demonstration

Illustrative scenario → Recognition → Action → Consequence: A research program constructs a neural model that predicts behavioral variability and intervention outcomes more accurately than explanations framed in terms of ‘beliefs’ and ‘desires’. Recognizing superior explanatory scope, researchers reframe diagnostics and interventions in terms of neural mechanisms, and folk‑psychological categories are deemphasized in scientific practice.

Misapplication

Mistaken interpretation: reading Eliminative Materialism as asserting that subjective experience or first‑person reports do not occur. Why it appears plausible: critics conflate rejecting a theoretical ontology with denying observable phenomena. Precise semantic error: the doctrine concerns the ontological status of folk concepts, not the existence of sensations or reports.

Consequence

Adopting the doctrine reorients explanatory frameworks, research priorities, and terminology: clinical and scientific practice may privilege mechanistic neuroscientific descriptions over folk‑psychological vocabulary, altering inquiry methods and how mental phenomena are conceptualized.

Reversal

Qualification: Even if certain folk‑psychological categories are ontologically rejected within scientific theorizing, those categories may retain pragmatic or heuristic roles in everyday communication, legal discourse, or preliminary clinical assessment; alternative philosophical positions (e.g., non‑reductive physicalism, functionalism) dispute wholesale elimination.

Boundary

Within: claims about the ontological status and explanatory adequacy of folk‑psychological categories. Boundary case: rehabilitating some higher‑level functional descriptors as instrumentally useful despite theoretical revision. Outside: general metaphysical physicalism or empirical neuroscientific findings themselves (the doctrine is about conceptual ontology, not direct empirical results).

Semantic Tension

Tension with the epistemic and pragmatic utility of common‑sense psychology: explanatory rigor and ontological parsimony ↔ communicative and normative roles of folk‑psychological vocabulary.

Synthesis

The core insight is an analytic distinction between the ontological status of theoretical posits and the pragmatic utility of ordinary language: advocating elimination targets concepts for explanatory failure, not necessarily everyday reports or subjective phenomena.