CHAPTER 01 | Leaders and Leadership 7
1.
Definition of Leadership 8
2.
11 Key Perspectives on Leadership
3.
Leaders and Managers 22

CHAPTER 02 | Leadership Development: A Process Approach 27
1.
Leadership Development Status 28
2.
7 Reasons Leadership Development Fails 34
3.
Three Premises for an Alternative Perspective on Leadership Development 41
4.
50 Process-Based Leadership Development Approaches

CHAPTER 03 | LEADER DEVELOPMENT: PRINCIPLES AND ISSUES 55
1.
Stage 56 of Leader Development
2.
Leader Development: Onboarding and Pipeline 60

CHAPTER 04 | Leader Development Methods I.
Training 79
1.
Three Approaches to Leader Development 81
2.
Leader Training 83

CHAPTER 05 | Methods of Leader Development II.
Development Activity 107
1.
Leader Developmental Activities 108
2.
Key Development Activities for Leader Development 111

CHAPTER 06 | Leader Development: A Life Cycle Approach 141
1.
Leadership and Life Experience: Case Studies of Two Leaders 143
2.
Early Experiences of Outstanding Leaders 145
3.
A Life-Cycle Approach to Leader Development 149
4.
The Implications of a Life Cycle Perspective on Leader Development 157

CHAPTER 07 | LEADER DEVELOPMENT: LEADER IDENTITY 161
1.
Identity: The Formation of the Fluid Self 162
2.
Leader Identity and Leader Development 167

CHAPTER 08 | Developing Followers and Followership 181
1.
Followership: Yesterday and Today 182
2.
Types of Followership 187
3.
Developing Effective Followers 197
4.
The Evolution of Leader-Follower Relationships 199

CHAPTER 09 | THE LEADERSHIP PROCESS 211
1.
Why Leaders Fail - Leadership Derailment 213
2.
Leader? Follower Identity Formation: Claiming and Granting 217
3.
Implicit Leadership/Followership Theory (Implicit Leadership 222)
-Followership Theories)

CHAPTER 10 | LEADERSHIP ASSESSMENT 233
1.
Leadership: How to Measure It: Leadership Effectiveness
(Leadership Effectiveness) 235
2.
How to Evaluate Leadership: Performance and Leadership Competency Assessment 238
3.
Factors Affecting Leadership Effectiveness: Leader Group Typology 247
Leader-group Prototypicality and Leader Endorsement

CHAPTER 11 | SUMMARY AND SUGGESTIONS FOR LEADERSHIP DEVELOPMENT 255
1.
Leadership Development Process Model 256

introduction

Today, leadership has become a central topic and a central discourse of our time, transcending the sustainable growth of organizations.
It is no exaggeration to say that there is no organization that does not pay attention to leaders and their development, and securing and developing leadership has become an essential task for the present and future of an organization.

In contrast to the numerous leadership theories and field success stories emerging in response to these contemporary demands, systematic research and guidance on how to develop and internalize the essence of leadership remains lacking.
Although scientific research on leadership began in earnest in the 20th century and has a history of over 100 years, academic interest and theoretical achievements in leadership 'development' are still in their infancy.
As a leadership researcher and a professor who meets practitioners in the field, it was both regrettable and shameful that there was no intellectual foundation to guide field practice and serve as a bridge between theory and practice.
Furthermore, the hopes of fellow researchers and students who shared the same concerns in anticipation of the publication of this book served as an opportunity to confirm that this intellectual thirst was not merely personal.

Over the past several years, I have been teaching leadership development theory at universities and have been deeply concerned about how to address this knowledge gap.
This book is the result of that reflection, and serves as a fundamental guide for practitioners in the field, executives interested in leadership, and researchers pursuing academic research.
In particular, co-authoring with Dr. So-Kyum Yoon, a leading expert in leadership development in Korea for a long time, made it possible to systematize leadership development knowledge while also incorporating practical insights from the field.
In this book, we aim to strike a balance between theory and practice by encompassing a wide range of research, from classic studies on leadership and leadership development to the latest findings, and by incorporating perspectives from the field.

Of course, it is impossible to cover everything in the vast and profound field of leadership development in one book.
Therefore, the purpose of this book is not to provide complete, all-encompassing knowledge.
Rather, we aimed to reduce deep-rooted misunderstandings and increase understanding of leadership development by integrating various fragmented and scattered research and practical practices into a single system.

I sincerely hope that this book will serve as a welcome first step for all those seeking to enter the world of leadership, laying a solid foundation for them to advance into a broader and deeper world of knowledge.

September 2025
Lee Jin