Citation: Program Development and Evaluation, Collecting Group Data: Affinity Diagram, Quick Tips #6,University of Wisconsin-Extension, Madison, WI. This document is part of a series of Tip Sheets developed by the Program Development & Evaluation Unit of University of Wisconsin Cooperative Extension. It contains information about using the affinity diagram. Copyright (or ©) 2002 Board of Regents of the University of Wisconsin System, d/b/a Division of Cooperative Extension of the University of Wisconsin-Extension#HowTo #ExtensionEducationEvaluation