Martin Dege joined the Pratt Institute in 2020. He has worked at the American University of Paris, the University of Potsdam, the University of Konstanz, the University of Hamburg, and Yale University in the past. Dege is the recipient of various research scholarships, among others, the Marie Curie Program of the EU, the Fritz-Thyssen Foundation, and the German Academic Scholarship Foundation. Dege's research follows three strands. On the empirical level, he investigates how concepts of crisis shape our everyday lives and the narratives we deploy to make meaning of the world and ourselves. On the theoretical level, he is interested in the historical emergence of psychology as a discipline, more specifically, how various theoretical ideas have been intertwined with political interests and power struggles to form the discipline as it stands today. On the institutional level, he explores concepts of digital humanities and how digitalization changes both research and teaching.

• Chapter 1. Introduction: What is Action Research?.- Part 1: The emergence of Action Research.- Chapter 2. The Founding Fathers - Moreno, Collier, Lewin.- Chapter 3. Pragmatic and Participatory Action Research – the Northern and Southern Traditions.- Part 2: Subjectivity, Democracy, and Action Research.- Chapter 4. The Lewinian Tradition.- Chapter 5. The Northern Tradition of pragmatic Action Research.- Chapter 6. The Southern Tradition.- Part 3: Klaus Holzkamp and the Concept of Subjectivity.- Chapter 7. What is German Critical Psychology?.- Chapter 8. Subjectivity and Democracy in the Tradition of German Critical Psychology.- Part 4: Action Research and Practice Research.- Chapter 9. New grounds for Action Research?.