Rodney Warrenfeltz, PhD | Trish Kellett, MBA

“Everything we see hides another thing. We always want to see what is hidden by what we see. There is an interest in that which is hidden and which the visible does not show us. This interest can take the form of a quite intense feeling, a sort of conflict, one might say, between the visible that is hidden and the visible that is present.”René Magritte

About The Book

Coaching the Dark Side of Personality combines the power of Hogan personality research with more than two decades of coaching expertise to help leaders uncover and overcome the derailers responsible for inhibiting their performance and limiting their careers. Drawing upon the knowledge of psychologists and professional coaches at the forefront of personality-based leadership development, Coaching the Dark Side of Personality provides an advanced framework to:

  • Establish a comprehensive model outlining the role of personality in leader performance
  • Describe the essentials of personality-based behavior change in a systematic way
  • Outline the coaching fundamentals that are necessary for success when working with leaders
  • Detail the coaching tips and techniques that have been proven to produce performance improvements

This definitive guide for improving leader performance is meant to be used not only by professional coaches, but also by leaders to improve their own performance and the performance of those they lead.

About the Authors

RodneyRodney Warrenfeltz, PhD has more than 25 years of consulting experience in leadership assessment and development. Prior to becoming a consultant, he held management position at PepsiCo, Lockheed Martin, the Colorado Department of Transportation, and IBM. He is the coauthor of The Hogan Guide: Interpretation and Use of Hogan Inventories and author of The Legend of Princess Heart Crystal, a leadership novel for middle grade and young adults.

TrishTrish Kellett, MBA is the director of the Hogan Coaching Network, a team of more than 50 professional coaches worldwide who are experts in using personality-based assessment results as a foundation for improving leader performance. Prior to joining Hogan, she spent 15 years in the leadership assessment, development, and the coaching industry. She also held executive positions at AT&T and National Service Industries.



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About Hogan

Hogan Assessment Systems is the global leader in providing comprehensive, research-based personality assessment and consulting. Grounded in decades of science, Hogan helps businesses dramatically reduce turnover and increase productivity by hiring the right people, developing key talent, and evaluating leadership potential. Hogan’s assessments are available in more than 60 countries and 50 languages, and are used by more than half of Fortune 500 companies.