Moving the Needle: What We Know (and Don't) About Developing Leaders examines 34 popular and cutting-edge instructional strategies that educators and trainers have employed to help others develop the capacity to lead. Some strategies have been popular for decades-such as student group projects-while others are just now emerging-such as using generative artificial intelligence. The book is designed to be imminently practical. Each chapter describes a different strategy for development, and includes illustrations of the strategy "e;in action,"e; examines the state of empirical evidence suggesting what scholars know about the strategy's effectiveness, and provides resources for where readers can learn more. For strategies with a shallower pool of evidence, the chapter provides suggestions for a future research agenda targeted at scholars interested in researching the methods and outcomes related to each strategy.