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A selection of English publications is included here. Many can be downloaded. They are structured by category, which you can select above. You can also select genres (right sidebar) that are covered in my publications.

Most of my publications are not in English. To access those, please switch to the Dutch site. To quickly get an overview, download the publication list.


Learning to change

A guide for Organizational Change Agents

Léon de Caluwé, Hans Vermaak - Sage, 2003
An overview of change management fundamentals

‘Learning to Change’ provides a comprehensive overview of organizational change theories and practices developed by both U.S. and European change theorists. The authors compare and contrast different approaches: five fundamentally different ways of thinking about change Read more…

Four contexts of action research

Crossing boundaries for productive interplay

Gertjan Schuiling, Hans Vermaak - International Journal of Action Research, 2017

This paper explores how action research takes place within and between four contexts: adding practical value, improving institutions, developing professions, and contributing to theory. We argue that action research is more than those activities conducted within these contexts: it is a process of handling the generative tensions in the boundary regions. Read more…

Facilitating local ownership through paradoxical interventions

Hans Vermaak – Journal of Applied Behavioral Science, 2012
Why do facilitators fail when they try too hard to help people?

The complexity of tough issues can only be handled effectively with intensive local participation. Such participation is not straightforward as people may shy away from the unfamiliar repertoires, unpredictable processes and inevitable opposition that come with the territory. This paper focuses on how to facilitate local ownership in a series of paradoxical interventions with sufficient depth and credibility. Read more…

Creating a colorful model of change

Reflection on developing a theory as scholar-practitioners

Hans Vermaak, Léon de Caluwé- Journal of Management Inquiry, 2017

This article describes how, almost twenty years ago, we came up with a meta-theory of change, now referred to as the “color model,” and how that theory has developed over time. We look back, using Smith and Hitt’s four-stage model of theory development, to better understand how one creative idea took on many manifestations, became a robust theory and is now widely used. Read more…

Using causal loop diagrams to deal with complex issues

In: D. W. Jamieson, Barnett & A Buono (eds.) Consultation for Organizational Change Revisited - Information Age Publishing, 2016

Hans Vermaak
Mastering an instrument for systemic and interactive change

A persistent stereotype of consultants is that of experts who have all the answers. However, the more complex problems are, the less consultants are able to provide ‘magical solutions’. Causal loop diagrams (CLDs) are a powerful tool to deal with issues characterized by content complexity and process complexity. Read more…

Knowing yourself as a change agent

In: D. W. Jamieson, Barnett & A Buono (eds.) Consultation for Organizational Change Revisited - Information Age Publishing, 2016

Léon de Caluwé, Hans Vermaak
A validated test based on a colorful theory of change

This chapter presents a questionnaire that measures individual change preferences based on a meta-theory of five paradigms of change. We describe its construction and improvement over a 13-year period, during which time more than 100,000 people have used the test as an instrument for self-reflection.
Read more…

Thinking in colors – on video

Five ways to deal with change

Léon de Caluwé, Hans Vermaak – Twynstra Gudde/Alcatel, 2008
Introduction into five different 'worlds' of change

Léon de Caluwé and Hans Vermaak present briefly five fundamentally different ways of thinking about change. Each of these represents a different belief system and conviction about how change works, the kind of interventions that are effective, how to change people, etc. They are labeled by color: yellow, blue, red, green, and white print thinking. Their color-model is based on their observations of current practices and existing theories about change. Read more…

The color test for change agents

How do you think about change?

Léon de Caluwé, Hans Vermaak – Twynstra Gudde, 2001
Assess your style preference

This is an interactive test that helps you identify your convictions about change. The test results can be used to assess what type of change agent you are: what you are good at and what could be developed further. Read more…

Change paradigms

An overview

Léon de Caluwé, Hans Vermaak – OD journal, 2004
A brief introduction in the ‘colors of change’

The authors present five fundamentally different ways of thinking about change, each representing different beliefs systems and convictions about how change works, the kind of interventions that are effective, how to change people, etc. Read more…

Planning deep change through a series of small wins

Hans Vermaak - Best Paper Proceedings Academy of Management, 2013
Find out why large scale change is rarely deep and why linear change paralyzes.

Complex issues require continuous change that is planned incrementally. This paper focuses on how such emergent change can be shaped through a process of small wins and explains how this may even use adversity to fuel the change. The research shows how planning is anything but an innocuous support activity for change efforts and describes how it can either frustrate or enable deep change. Read more…


In: K. Kuitenbrouwer, T. Goudswaard, A. Schamineé. SocialDesignForWickedProblems - HNI, 2014

Hans Vermaak
Cooperation between the worlds of design, visual arts and change management

Since a few years visual artists and designers in the Netherlands have banded together with organizations to adress social issues in a different way. They focus on complex issues where sensemaking and participation is key. During the last half year or so three more action research projects were taken on with lost of enthusiasm. The movement reported on this October at the Dutch Design Week.  Read more…

‘Defixation’ as an intervention perspective.

Understanding Wicked Problems at the Dutch Ministry of Foreign Affairs.

A. Stoppelenburg, H. Vermaak - Journal of Management Inquiry, 2009
Systemic research to uncover the unwritten rules of an organization

This case study presents reflections on a research intervention conducted at the Dutch Ministry of Foreign Affairs. The subject was the practice of administration. Its objective became to understand its “wicked problems” and to create action principles. It was an analytical research effort as well as a learning intervention. Read more…

Designing Appreciative Inquiry as a Generative Change Process

Stretching the Practice of this Dialogic Approach

Danielle Zandee and Hans Vermaak – Paper Organizational Discourse Conference, 2012
A common language for situated AI design based on a discussion of current contrasting practices and recurring criticism of prevailing AI designs. How can we get more out of this intervention approach?

Because of its apparent simplicity and luring strength-based stance, appreciative inquiry can be misunderstood as an attractive and easy to emulate technique. Such misunderstanding may cause slippage from thoughtful inquiry into a managerial tool to create motivational experiences at work rather than to engage with complex issues. Such slippage may ultimately turn the appreciative approach into another disappointing management fad. Fortunately, the prolific use of appreciative inquiry during the last decades provides us with rich experiential material for timely reflection, critique and renewal. Read more…

A springboard for further learning

In: S.M. Adams, A. Zenzi (eds.) Preparing Better Consultants: The Role of Academia. Information Age Publishing, 2011

Hans Vermaak
Teaching seasoned practitioners by harnessing their experience.

The challenges consultants face warrant ongoing education. When those practitioners have 15- 30 years of experience dealing with messy realities, however, it makes little sense for faculty to teach clean-cut models in standardized curricula. Read more…

OD without context management is a luxury item.

Paper for a symposium on the future of Organizational Development

Hans Vermaak, Annual Academy of management Conference, 2006
Organization Development suffers from a lack of pragmatism about power

OD has an established tradition. There is a community of practice, academic research, handbooks in all sorts, development of new practices, lots of publications, proven methods. All seems fine. At the same time there is recurrent talk and publications expressing worry about the future of OD. Read more…

Working interactively with causal loop diagrams

In: J. Boonstra, L. de Caluwé (eds.) Intervening and changing - Wiley, 2007

Hans Vermaak
Intervention choices and paradoxes in practical application.

Causal loop diagrams can help in tackling complex issues effectively. Until the nineteen-seventies the literature focussed on the technique of such diagrams. Since then it has become evident that participation of stakeholders in making and applying such diagrams is desired to affect change. Read more…

Conspiring fruitfully with professionals

Hans Vermaak, Mathieu Weggeman - Management Decision, 1999
Evergreen lessons for dealing with professionals … and enjoying it.

Professionalism still is on the way up. However, the working methods of managers and professionals do not develop at the same pace. Professionals often seek out their workplace within an organisation but then proceed to act as soloists, which makes fragmentation, mediocrity and non-commitment the rule rather than the exception. The manager’s reflex dictates that he/she tackles problems with control and command, resulting in all sorts of conflicts. Read more…

Book summary ‘Enjoying tough issues’

Dynamics of innovation and stagnation

Hans Vermaak, Kluwer 2009
How to deal effectively with complex change? Based on years of research the Dutch book won many awards. To give English readers a ‘taste’, the original summary is made available here.

There is no shortage of tough issues: whether it is collaboration between professionals, external oriented government, sustainable economy or development cooperation. They are characterized by complexity of different kinds: many factors and many actors are involved. It makes tough issues hard to pin down and impossible to eradicate. The dominant change repertoires are ill equipped for tough issues: clear division of tasks and responsibilities, minimizing conflicts, drawing up organizational missions, rolling out large-scale change programs Read more…

Comparing psychotherapists’ and change agents’ approaches to change

In: A. Buono (ed.) Creative Consulting: Innovative Perspectives on Management Consulting - Information Age Publishing, 2004

Léon de Caluwé, Frans Que, Hans Vermaak
What can change agents and therapists learn from each other?

In this chapter we explore the most prominent clusters of theories for changing organizations and changing people. Managers and management consultants make use of the first set of theories while psychotherapist use the latter. Our assumption was that there would be considerable overlap between these sets of theories. Read more…

Thinking about Change: Complexity and Multiplicity in Change Processes

In: J. Boonstra (ed): Dynamics in Organizational Change and Learning - Wiley, 2004

Léon de Caluwé, Hans Vermaak
Theories about why change does not work. And theories about how differently change works when it does.

Given that more organizational change takes place unplanned than planned and more unsuccessful than successful, we think there is justification for reflection on why change does not work. This implies complexifying things rather than simplifying them: to search for hidden rules of the game, for informal processes, political mechanisms in organizations, etc. Read more…

Book Review ‘Learning to Change’

A guide for Organization Change Agents

Alan Clardy – Perssonel Psychology, 2003

[…] The authors identify and integrate a large and disparate literature, and, in the process, do a nice job both summarizing and advancing it. The text is supplemented by high quality tables and charts that provide easy-to-use visual summaries or aides for comparison. For American readers, the book introduces works from European scholars who may not be that well known. Read more…

At least ten islands of learning

In Search of Corporate Learning

Léon de Caluwé, Hans Vermaak, Jos van der Woude – Twynstra, 1999
Exploring a common language for talking about learning

People learn, all the time and everywhere. Yet it seems we all have our own images and ideas about what learning actually is. More importantly, we all seem to have our favourite approaches to learning, which we call upon whenever a learning situation arises. Read more…

Book Review ‘Learning to Change’

A guide for Organization Change Agents

Jeanne Zaptin - Journal of Organizational Change Management, 2003

For professionals involved in change management and students wanting to gain insight into the field, ‘Learning to Change’ is an excellent resource. The authors, Léon de Caluwé, and Hans Vermaak, take a theoretical and practical approach to the subject. Read more…

A potential method for determination of gaseous and particulate lead in exhaust gas

Microwave-induced air-plasma emission spectrometry and Zeeman furnace atomic absorption spectrometry

Hans Vermaak, Osamu Kujurai, Shigeki Hanamura, James Winefordner – Canadian Journal of Spectroscopy, 1986
A blast from the past: a publication dating back to when I was involved in chemistry research

In the 80’s lead in the air was a real environmental and health issue. It was caused by many things like lead paint on houses, but mostly by exhaust gases from traffic. The Environmental Protection Agency (EPA) gave the University of Florida a grant to create a device that would measure lead content in air. During my studies at that university I participated in that research. The article shows some of its findings. Read more…