Emotion is traditionally described as feeling, affect, appraisal, physiology, or motivation. These categories capture components of emotion but fail to describe its mechanics. KOGNETIK introduces a structural ontology in which emotion is not a state but structural drift under affective recurrence. Emotional rules (Sᴱ) update with each recurrence (Rᴱ), producing drift (ΔSᴱ). The sensitivity of emotional structure to recurrence is emotional reflexivity (Ψᴱ), and its inverse is emotional load (Lᴱ). Emotional kognemes (Kᴱ) are minimal rule mutations; meta-kognemes (Kᴱ*) modify rule-modification rules. Emotional sequences are governed by Qᴱ, structural updates by Uᴱ, oppositional forces by Pᴱ, and long-term identity change by Tᴱ. Reflexivity entropy (Ψᴴ) measures distribution of emotional plasticity across rules, and empathic drift coupling (Eᴱ) describes cross-system co-evolution. This paper provides a complete operator framework for emotional dynamics, including:• emotional drift classes (adaptive, stochastic, degenerative)• recursive emotional collapse (RET)• emotional Ψ-Break (structural opening event)• drift-pooling in groups• alignment geometry (Aᴱ)• emotional identity invariants (Cᴱ)• gradient maps of emotional reflexivity• 20 full case studies across clinical, relational, developmental, societal, and AI systems A full mathematical appendix defines structural spaces, metrics for ΔSᴱ, operationalizations of Ψᴱ, RET detection protocols, and empirical measurement strategies (linguistic drift, semantic embeddings, physiological proxies, AI-based drift mapping). An ethical appendix formulates autological alignment principles for therapeutic and AI systems, ensuring ∂Ψ_other/∂R_self ≥ 0 as a minimal ethical requirement. Emotion becomes:• measurable,• drift-driven,• operator-defined,• structurally coherent,• substrate-independent,• and universally applicable across human, biological, social, and artificial systems. -- Intellectual Property & Licensing The KOGNETIK Research Series is released under the Creative Commons Attribution–NonCommercial 4.0 International License (CC BY-NC 4.0). All scientific works within the series may be cited, shared, and adapted for non-commercial research purposes with proper attribution. Commercial use—including consulting, advisory services, integration into commercial platforms, monetized training, certification, or system-level deployment—is not permitted under this license and requires a separate written agreement. Full license text:https://creativecommons.org/licenses/by-nc/4.0/ For licensing, partnerships, translations, or applied development inquiries:research@kognetik.dehttps://www.kognetik.de ORCID: https://orcid.org/0009-0000-8544-4847 Kognetik Series Information KOGNETIK — Minimal Operator Definition of Reflexivity (Ψ = ∂S/∂R) Reflexivity as structural rate-of-change:Ψ = ∂S/∂R measures structural drift under recurrence. Process, not state:Reflexivity specifies a transformation rule rather than a content or level. Domain-independent operator:Applicable across biological, cognitive, artificial, social, industrial, and geophysical systems. Non-ascriptive and empirically testable:Ψ enables comparative analysis of systems via observable structure and recurrence. Higher-order phenomena as specifications:Learning, adaptation, consciousness, governance, and identity are structured regimes of Ψ.