Reference-Induced Perturbation: Normativity, Agency, and Rule-Following in Perceptual Control Theory

Perceptual Control Theory (PCT) explains behavior as the active maintenance of perceptual variables relative to internally specified reference conditions. Standard formulations, however, often treat environmental disturbance as explanatorily primary and reference signals as fixed setpoints against which deviation is corrected. This paper reconstructs PCT by reversing that priority. It introduces the notion of reference-induced perturbation: a change counts as a disturbance only relative to an active reference, and error presupposes the prior establishment of a standard that makes deviation matter at all. Here, normativity is neither imposed from outside the system nor derived from interpretation, inference, or social agreement. It is an architectural consequence of control itself. Reference signals partition perceptual states into acceptable and unacceptable regions, generating correctness conditions internal to the system and organizing behavior as the maintenance of constraint under variation. Agency here consists in the capacity of hierarchically organized systems to generate, sustain, and reorganize such reference conditions. The framework clarifies the structure of motivation, agency, and rule-following without invoking inner rules or interpretive regress. It also distinguishes reference-based normativity from probabilistic expectation, separating value from mere surprise and insistence from mere prediction. By locating normativity in maintained constraint rather than statistical inference or externally defined reward, the reconstruction offers a unified account of minimal normativity, agential caring, and socially scaffolded rule-following. These results bear directly on ongoing debates in phenomenology, enactivism, predictive processing, and reinforcement learning concerning the source of normativity in cognitive systems.