“This book is a pivotal contribution that advances behavioral science while centering dignity, autonomy, and participation. It offers applications across domains, from clinical work with autistic children and families to animal training, education, social systems, and culture. It’s a valuable resource for understanding behavior through multiple contingencies and fostering assent.”Celia Heyman, PhD, BCBA-D, Capella University and FTF Behavioral Consulting“This is an invaluable resource for anyone seeking to deepen understanding and application of behavioral science. I’m often asked by animal trainers for recommendations on NCA and the constructional approach, and resources like this are rare. The contributors have created a cross-species collection that reframes sustainable behavior change and ethical problem-solving. It belongs on the shelves of behavior analysts, clinicians, educators, and animal trainers who are committed to humane, constructional solutions.”Hillary Hankey, Avian Behavior Conservancy and Avian Behavior Lab“This book showcases the breadth and power of the constructional approach. Across domains from emotions and autism to psychotherapy and social systems, contributors show how ‘problematic’ behavior can reflect rational adaptation within complex, nonlinear contingencies. Blending theory with applied examples, the book moves beyond deficit models toward environments that expand choice, competence, and dignity.”R. Trent Codd III, EdS, CBT Collective“There has been renewed interest in NCA and the constructional approach, and this book brings these approaches to life through applications that help practitioners assess and treat many circumstances in humane ways. Case Studies and Applications in Nonlinear Contingency Analysis will help practitioners analyze contingencies and identify creative solutions that lead to meaningful outcomes and enhance quality of life.”Mary Jane Weiss, PhD, BCBA-D, LABA, Institute for Applied Behavioral Science at Endicott College