Psychic Arbitrage: A Transactional Framework for Defense Mechanisms, Psychopathology, and AI-Mediated Therapeutic Disruption (Extended Working Paper, v20)

Freud's economic metapsychology conceived the psychic apparatus as an energy management system, but its energetic vocabulary has been criticized for lacking operationalization. The Free Energy Principle (FEP) rehabilitated Freud's economic intuition by recasting the constancy principle as free energy minimization, yet a gap persists between FEP's formalism and clinical phenomenology. This article proposes an intermediate analytic layer — psychic arbitrage — that bridges this gap by replacing the energetic vocabulary with a transactional one derived from financial theory. Psychic markets are defined as functional registers of the psychic apparatus, and defense mechanisms are reconceptualized as transaction types (transfer, conversion, cancellation, generative), each with a characteristic cost–yield profile. Psychopathology is reframed as market dysfunction, the therapeutic relationship as market regulation, and AI chatbot interaction as artificial market disruption. The formal isomorphism between the no-arbitrage principle and free energy minimization is identified as a structural property. The framework generates testable predictions regarding defensive flexibility, mentalization capacity, and the population-level impact of algorithmic therapeutic surrogates. This version (v20, February 2026) develops: (a) five psychic markets with explicit financial equivalents — conscious (open market), unconscious (OTC market), object relations (capital market), somatic (derivatives market), and cultural/symbolic (venture capital market); (b) a transactional taxonomy of defense mechanisms — transfer (projection, displacement, repression), conversion (sublimation, reaction formation, intellectualization), cancellation (denial, splitting, projective identification), and generative transactions (humor, anticipation, altruism) — with cost–yield profiles and FEP correspondents; (c) a market-dysfunction taxonomy of psychopathology: depression (closed market), anxiety (volatile market), OCD (monopolistic market), borderline organization (fragmented market), and psychosis (collapsed market); (d) a regulatory model of the therapeutic relationship — Bionian containment as market-making, Winnicottian holding as transaction infrastructure, the working alliance as transaction-cost reduction — together with a five-dimensional psychic market audit; and (e) a transactional analysis of AI chatbots as market disruptors (liquidity illusion, market-making blockage, closure of arbitrage circuits, repertoire degradation), updated with post-2024 empirical corroboration. The framework operates at Marr's algorithmic level, complementing rather than reducing to the FEP. The derived clinical instrument is the Psychic Arbitrage Profile Protocol (PAPP), operationalizing five audit dimensions: market accessibility (D1-ACC), psychic liquidity (D2-LIQ), transactional repertoire (D3-REP), cumulative transaction cost (D4-COST), and residual arbitrage capacity (D5-RES). Supplementary Material (Appendices A–C): https://doi.org/10.5281/zenodo.18670464Cite the framework as: Niculescu, L. (2026). Psychic Arbitrage: A Transactional Framework for Defense Mechanisms, Psychopathology, and AI-Mediated Therapeutic Disruption. SSRN. https://doi.org/10.2139/ssrn.6254479