The "Extraordinary Leader 360 Survey" by Zenger Folkman is a validated and reliable tool for assessing leadership effectiveness. Analyzing data from over 237,000 responses, the survey identifies 16 differentiating leadership competencies that strongly correlate with employee commitment, engagement, and retention. These competencies include integrity, innovation, communication, and motivation. The survey also predicts employee intent to leave and shows that effective leaders foster highly committed teams. The survey's reliability is supported by high Cronbach's alpha coefficients, ensuring internal consistency​.

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