Self Coherence Theory (SCT): A Computational Framework for Identity Stability, Drift, Fragmentation, and Reintegration

Self Coherence Theory (SCT) proposes that identity stability depends more strongly on dynamic cross-layer self-coherence than on autobiographical memory preservation alone. SCT models the self as a multi-layer dynamical system composed of memory integrity, emotional continuity, cognitive coherence, embodied integration, recursive self-reference, narrative continuity, and temporal continuity. The framework introduces the Self Coherence Index (SCI) as a computational measure of identity stability and fragmentation. This work presents the conceptual foundations, mathematical formalization, graph-theoretic interpretation, simulation results, and falsifiability criteria of SCT.