The document discusses various topics related to assessing and measuring leadership, including the following key points: - There is a gap between what researchers know about evaluating leadership effectiveness and what methods organizations actually use. This impacts the quality of leadership. - Estimates suggest the base rate of managerial incompetence may be between 50-75%. Various tests and models exist to determine competence levels. - Identifying, developing, and retaining high quality leadership talent is a major concern for organizations. Several factors contribute to a shortage of effective leaders. - Best practices for assessing leadership potential involve defining competency models and using a multiple hurdles approach with inexpensive initial assessments before more rigorous evaluations.

6. The Two Dimensions of Managerial Incompetence

12. Typical Correlations between Different Assessment Techniques and Job Performance in the United States

14. Example of a mid-level leadership competency model

15. Multiple Hurdles Approach

19. Common Measures of Successful and Unsuccessful Leadership

22. Some Common and Uncommon Variations of Leadership Studies

24. Jack Welch’s Eight Rules