Impact measurement
Impact measurement is the systematic process of defining intended effects, selecting indicators, collecting and analyzing evidence, and assessing changes associated with an activity, organization, policy, or investment. Depending on the purpose and method, it may examine positive and negative, intended and unintended outcomes and the contribution made toward them.
In simple terms
The process begins with a clear objective and an explanation of how an activity is expected to create change. It then defines relevant outcomes, affected groups, indicators, baselines, time horizons, data sources, and responsibilities. A Key performance indicator can track a result, but a set of indicators alone does not establish causation or explain who experienced change. Credible measurement states assumptions and limitations, uses proportional methods, considers negative effects, and distinguishes observed change from the organization's contribution or from impact that can reasonably be attributed to it.
Why it matters
In Impact investing and other applications, impact measurement can improve decisions, learning, accountability, and resource allocation when evidence is connected to management rather than used only for promotion. Weak boundaries, selective indicators, double counting, unsupported attribution, or missing stakeholder perspectives can exaggerate impact. Comparable numbers are useful only when definitions, methods, periods, and assumptions are sufficiently aligned.
Example
An employment program defines its intended outcomes with participants, records a baseline, tracks job retention and income over time, examines differences across participant groups, and documents other factors that may explain change. Managers use the findings to adjust delivery and report both positive results and limitations instead of claiming that every observed improvement was caused by the program.
How it differs
Impact materiality
Impact materiality determines which effects on people or the environment are material for a reporting assessment; Impact measurement gathers and evaluates evidence about the effects and changes themselves.
Impact investing
Impact investing is an investment approach intended to generate measurable positive impact alongside financial return; Impact measurement is a method that can be used for investments, policies, programs, or operations.