Beyond the First Ripple: RIPPLE-4 as a Mechanism-Based Recursive Policy-Appraisal Framework for Small Open States

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Abstract

Policy appraisal commonly identifies direct costs, benefits, and implementation requirements while representing actor adaptation, cross-system transmission, and policy-created future states less consistently. This paper develops RIPPLE-4 – Recursive Impact Pathways, Politics, Leverage, and Exposure – as a mechanism-based framework for tracing consequences through four analytic orders: direct incidence, participant adaptation, system propagation, and inherited state change. Four-level consequence maps and ripple methods have clear precedents; originality is not claimed for the number four or the metaphor. The contribution is to type pathways by mechanism, update policy state recursively, code evidence edge by edge, treat coupling and loop-closure time as measurable moderators, and connect analysis to monitoring and revision rules. The framework is developed through abductive conceptual synthesis and a structured, focused comparison of six purposively selected episodes in Mauritius, Barbados, Jamaica, Maldives, Grenada, and Vanuatu. These mechanism probes illustrate capability formation, market creation, mobile-capital response, concentration, state-contingent adaptation, and external-gatekeeper spillovers; they are not a representative sample or causal-effect estimate. The paper advances eight testable propositions and replaces a composite risk score with a transparent critical-tail profile to limit false precision. A Saint Lucia application shows how the framework can represent interactions among citizenship policy, asylum pressure, and foreign mobility decisions without reducing a multicausal event to one domestic cause. RIPPLE-4 is offered as a middle-range appraisal architecture whose incremental value should be tested against standard appraisal and unstructured consequence mapping.