Impact investing and evidence quality · Original editorial analysis
Four Claims, Four Tests: An Evidence Ledger for Impact Investing
Journal Opal · Editorial research desk
Journal Opal · 2026-11-06 · CC BY 4.0
Impact diligence improves when a family separates the outcome experienced by people, the contribution of an enterprise, the contribution of its investor and the quality of the evidence. A proposed ledger makes those claims inspectable without pretending that one score can settle them.