Gilmore  Crosby Author of Evaluating Organization Development

Gilmore Crosby

Crosby & Asscoiates

Gilmore Crosby is an author, father, Organization Development (OD) master practitioner, and engaging public speaker. His career dates to 1984, and he has been going strong ever since. Mr. Crosby’s methods are especially rooted in Kurt Lewin’s action research methods, and Edwin Friedman’s systems thinking. Gilmore is happily married to his wife Alecia, a Jamaican, and considers Jamaica his second home.


Gilmore Crosby and rock & roll were both born in the 1950s, and they suit each other. On the other hand, he spent his early childhood in segregated Nashville, and racism, sexism, and classism don’t suit Gilmore at all. With values deeply rooted in social justice, Gilmore has built a unique career helping people connect and treat each other with dignity and respect. He is an author, a father, an Organization Development (OD) master practitioner, and an engaging public speaker. His knowledge draws on his own 30+ years of experience, and that of his father, Robert P Crosby, who began his own OD career back in the 1950s. Gilmore jumped at the chance in 1984 to be his father's assistant on a bitterly contentious project for the city of Spokane, Washington, to decide the future of the main downtown park. He has been going strong ever since, with international experience in Egypt, Spain, Mexico, Chile, Poland, Canada, and Jamaica, as well as years spent at PECO Nuclear and as an IT Change Management Consultant with EDS.

Gilmore is happily married to his wife Alecia, a Jamaican, and considers Jamaica his second home.

Gilmore's second book, "Leadership Can Be Learned: Clarity, Connection and Results" was published in November 2017. The third edition of his first book, "Fight, Flight, Freeze: Emotional Intelligence, Behavioral Science, Systems Theory & Leadership," was published by CrosbyOD Publishing in 2017 (the first edition was published in 2008).

Areas of Research / Professional Expertise

    While drawing from many sources, Mr. Crosby’s methods are especially rooted in Kurt Lewin’s action research methods, and Edwin Friedman’s systems thinking. Crosby’s application of Lewin’s T-group method provides a catalyst for deep and lasting individual and systemic change.



Featured Title
 Featured Title - Planned Change: Crosby - 1st Edition book cover


Planned Change - My second Taylor and Francis publication, is now available!

By: Gilmore Crosby
Subjects: Business & Management, Public Administration & Public Policy

"Gil Crosby has accomplished what most of us in the world of applied behavioral science, in general, and OD and T-Group training, in particular, have not—making the theoretical father of our work accessible. Thus, this book is a gift and with it we can understand more deeply and teach others more accurately what Lewin actually stated and meant. Moreover, the book is reader-friendly, visually appealing, and humorous rather than academically boring. Thank you, Gil!"

Dr. W. Warner Burke

Kurt Lewin (1890-1947) was a visionary psychologist and social scientist who used rigorous research methods to establish an approach to planned change that is both practical and reliable. He mentored and inspired most of the early professionals who came to identify themselves as practitioners of organization development (OD). He also fostered the emergence of the experiential learning method known as the T-group, which uniquely structures group dynamics into a laboratory for dramatic individual and team development. In the early days, most OD professionals learned much about themselves and about group dynamics through T-group experiences.

Lewin’s methods, though little known, yield consistent business results such as increased performance and improved morale. His approaches have the rare impact of not just changing behavior, but changing the beliefs that underlie behavior. Sadly, most OD professionals today— business and organizational leaders, community organizers, and people, in general—have never read any of Lewin’s actual writing beyond a quote or two. Indeed, some in the OD profession have rejected or distanced themselves from what they think Lewin taught, even though they and many others seem to know very little about his methods or history. Because Lewin was a prolific writer, one of the author’s main goals is to organize his immense body of published work so that readers can easily explore the source material and form their own opinions.

Essentially, this book is aimed at introducing Lewin in a new way, both simplified yet substantial enough to guide anyone who is trying to plan change, whether at the individual, group/team, organizational, or societal levels. Lewin was not trying to create methods for OD professionals alone (or for social scientists as he regarded himself). In his interventions, he taught those how to do their own version of planned change. He believed social science might be the light that helps create a brighter future for humanity. This text transfers this knowledge to a broad audience so that each reader can more successfully implement organizational and social change.


Planned Change book brief video intro

Published: Nov 12, 2020

A brief video intro for my fantastic new book on Kurt Lewin's Planned Change! Don't practice OD or lead change without it!

Leadership Can Be Learned Author's Video

Published: Mar 16, 2018

Gil Crosby describes his new book in front of one of his favorite Jamaican beaches.