This review explains the origins of the Leadership Practices Inventory (LPI) as an empirical instrument to measure The Five Practices of Exemplary Leadership framework, a major transformational leadership model. The essential psychometric properties of the LPI are investigated using both the LPI normative database, with nearly 2.8 million respondents, as well as reviewing pertinent findings of several hundred studies conducted worldwide by scholars utilizing the LPI in their research. Issues of both reliability and validity are considered, with the conclusion that the LPI is quite robust and applicable across a variety of settings and populations.
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