The work of evaluators is constantly being reshaped in recognition of chang
es in the information needs of stakeholders. New thinking about the functio
ning of organizations poses a challenge for evaluators to provide informati
on to make organizations more effective in terms of their structure, coordi
nation, and delivery of programs and services. While the ways in which eval
uation can serve the needs of organizational management have been well docu
mented, far less attention has been given to the evaluation needs of leader
s. This paper conceptualizes key differences between management and leaders
hip as a basis for suggesting ways in which evaluators might operate to ser
ve the decision making needs of organizational leaders.