LeaderLab, a leadership development program, encourages and enables leaders to take more effective actions. In developing content and structure, several instructional principles are important: realism, simplicity, relevance, operationalism, holism, and intervention over time. The program content falls into four categories: (1) challenges faced by executives; (2) competencies to deal with the challenges; (3) skills and knowledge that help each participant; and (4) the information and experience generated. Leaders face several challenges today, such as dealing with rapid and substantive change, managing diversity of people and views, and building the future through a shared sense of purpose. Five overlapping competencies needed to address the challenges are as follows: dealing effectively with interpersonal relationships, behaving in terms of systems, approaching decision-making from the standpoint of trade-offs, acting with flexibility, and coping with disequilibrium. The third content area focuses on two aspects of how leaders develop themselves: learning to learn and clarifying one's sense of purpose. The seven elements of the LeaderLab program are as follows: multiple sessions; pre- and post-course contact; process advisor--individual program tailoring; change partners; diversity of participants and trainers; classroom activities; and instruments. (A model diagram and conclusions are included. The bibliography contains 51 references.) (NLA)