Who Defines Normality? Autism Reconsidered – The Diagnostic Paradox, Structural Metacognition, and the Limits of the Deficit Model

This monograph identifies and analyzes structural biases in the psychiatric diagnosis, treatment, and conceptualization of Autism Spectrum Disorder (ASD). Chapter 1 develops the “diagnostic paradox”: the phenomenon whereby the diagnostic system’s reliance on self-referral creates a structural filter that selects for individuals whose metacognitive capacity enables them to recognize and articulate their own divergence, while systematically missing those whose cognitive profiles do not generate self- referral. I propose a three-layer decomposition of what the literature has treated as unitary “social metacognitive deficit”: implicit social processing (Layer 1), metacognitive monitoring (Layer 2), and structural metacognition (Layer 3, introduced here as a conceptual proposal awaiting empirical test). A systematic analysis of the DSM-5 diagnostic criteria reveals that six of seven specific criteria (A1-A3, B1-B3) primarily detect social non-conformity or cognitive variation rather than intrinsic neurobiological difficulty, while the conditions that cause the most direct suffering to autistic individuals (epilepsy, sleep disturbance, gastrointestinal problems, executive function difficulties) are not part of the diagnostic criteria at all. The chapter further examines the shared etiology of co-occurring conditions, the evidence base and outcome measures of Applied Behavior Analysis (ABA), the structural inversion in post-diagnostic support, and the problem of internalized social norms in treatment-seeking. Chapter 2 proposes a neural mechanism underlying the Layer 1 differences identified in Chapter 1: the “decoupled affect” hypothesis. Drawing on recent evidence that oxytocin receptor-expressing neurons in the paraventricular thalamus simultaneously regulate social behavior and fear extinction (Yamamuro et al., 2026), I argue that neurotypical social cognition relies on a “bundled architecture” in which social approach, fear regulation, empathic processing, and sensory integration are mechanistically coupled through shared neural populations. In at least some forms of neurodevelopmental