Presents a Comprehensive Guide to Preventing Mental Strain in High-Risk Professions Work in healthcare, emergency response, or other high-risk professions involves sustained emotional pressure. Yet the consequences of these demands are often misunderstood, underestimated, or addressed too late. Fundamentals of Strain Psychology introduces a framework for understanding how psychological strain develops and how it can be prevented in demanding work environments. Drawing on bio-psycho-social and existential perspectives, Rikke Høgsted presents Strain Psychology as an approach to recognising early warning signs, managing exposure, and supporting sustainable practice at both individual and organisational levels. Structured in three parts--The Impacts, The Reactions, and The Strategies--the book combines theory with practical tools that support emotional balance, professional functioning, and long-term resilience. Høgsted's Strain Square model provides a structured way to assess and respond to psychological demands across roles and contexts. Bridging research and real-world application through evidence-based insights and field-tested methods, this book: Integrates bio-psycho-social and existential approaches to understanding workplace strain and resilience Explores the psychological effects of primary and secondary exposure to trauma and crisis situations Identifies early indicators of strain and risk factors for burnout and moral injury Provides practical strategies for prevention, recovery, and sustainable performance Clarifies the shared responsibility of employees, leaders, and organisations in managing psychological demands Fundamentals of Strain Psychology is relevant for professionals in healthcare, emergency services, defence, social work, and related fields. It supports courses in psychology, occupational health, and organizational behavior, and serves as a practical reference for those responsible for managing psychological strain in the workplace.