This document discusses how the LifeStyles Inventory (LSI) can be used for leadership development. The LSI measures thinking styles on 12 dimensions organized into constructive, passive/defensive, and aggressive/defensive styles. It helps leaders understand their current styles, accept them, examine how they affect others, commit to change, and develop strategies for improvement. Specifically for leadership, the LSI aids in increasing constructive styles and decreasing passive/defensive and aggressive/defensive styles to enhance leadership practices.