A Practical Guide to Measuring and Managing Impact
A manual written for venture philanthropy organizations and social investors at any point in the impact measurement process. With the perspective that data acts as "a prerequisite for making impact," the manual recommends IRIS as a first-tier choice of output indicators.
"Output indicators need to be in line with the theory of change ... and to promote standardization we will look where possible to use the IRIS indicators."
Support for IRIS, page 60