Evaluators in the HPI field can improve their performance program results with effective evaluation through appreciative inquiry. Appreciative inquiry and evaluation have many similarities, and when combined they add value and effectiveness to the measurement of intervention results. Appreciative inquiry is beneficial in many evaluation contexts: for example, when previous evaluations have failed or when change needs to be accelerated. Success is associated with applying appreciative inquiry to the evaluation process for performance improvement projects. (Contains 3 figures.)