A curated collection of research, frameworks, and tools — organized by topic and mapped to The Impact Thesis Blueprint.
A theory of change is the logical framework that traces the causal path from investment to impact. It connects five stages — from the initial capital contribution and the activities it funds, through to the outputs, outcomes, and long-term impact those activities produce. Within The Impact Thesis Blueprint, the theory of change serves as the engine that transforms an impact thesis from aspiration into a testable, evidence-based model.
The concept originates in program evaluation and international development, where practitioners needed to demonstrate not just that outcomes occurred, but that specific interventions caused them. Impact investing adopted this framework because it addresses the same fundamental question: how does money become change?
In practice, a theory of change requires identifying the assumptions embedded in each causal link. If you invest in a company that provides affordable housing, you are assuming that housing affordability is a binding constraint for the target population, that the company's model can deliver at the price point required, and that the provision of housing will produce downstream effects on health, education, or economic stability. Each assumption is testable. Each can be supported or undermined by evidence.
The Blueprint's architecture is built on a theory of change. It aligns the impact pathway and integrates complementary models to trace the logical connections between contribution and result. The resources here support that process from multiple angles.
Framework for identifying and engaging community stakeholders in economic development.
Guidance on developing measurable indicators to track progress against a Theory of Change.
Foundational book proposing a new economic model that balances human needs within planetary boundaries.
Research monitoring how the world is performing against social foundations and planetary boundaries simultaneously.
Women-led logistics startup in Southeast Asia demonstrating how operational business models generate economic inclusion outcomes alongside commercial returns.
IIX investment in a Vietnamese coffee company illustrating how blended finance and gender-lens strategies generate verifiable farmer impact.
Framework including the Capitals Protocol and Governance for Valuation, guiding multi-capital decision-making.
Foundational systems thinking essay identifying the most effective points for intervening in complex systems.
Investment in Sutura, a Malian menstrual health enterprise, illustrating how impact investors support mission-aligned entrepreneurs in frontier markets.
Distinguishes between primary, secondary, and tertiary sources for research and data collection.
Landmark government-commissioned review establishing the economic case for protecting and restoring biodiversity.
UN guidance on developing a Theory of Change for sustainable development programming.
Academic paper proposing an architecture for corporate transformation that integrates sustainability at the business model level.
Assessment of the underlying causes of biodiversity loss and options for achieving transformative change by 2050.
WBCSD's shared vision for a world where 9 billion people live well within planetary boundaries by 2050.
Executive summary translating Doughnut Economics into practical guidance for creating regenerative and distributive enterprises.
Clarifies the distinction and overlap between human-centered design and design thinking methodologies.