This essential guidebook provides a comprehensive, holistic, and evidence-based account for improving the decision making of sports officials across different sports and levels. By combining cutting-edge research with practical strategies, this book provides fundamental frameworks for developing decision-making skills that support the needs of officials themselves, officiating educators, sport organizations, and academics. This cross-disciplinary collaboration ensures the book stays grounded in both theory and practice, offering readers a well-rounded, state-of-the-art understanding of the subject.Divided into three key sections, the book first explores the unique demands and types of decisions faced by officials in different sports. Next, fundamental cognitive and mental factors that influence decision making are explained, emphasizing the creation of knowledge, the influences on decision processes, and the role of mental health and psychological management on decision-making performance. Finally, the book outlines pragmatic and innovative strategies for supporting, assessing, and training decision making and creating effective development climates for sports officials. Future trends in the evolution of technology use for training and assessing officials - spanning grassroots to elite levels - are also discussed, including artificial intelligence (AI), virtual reality (VR), and other immersive learning tools.Each chapter is enriched by "Knowledge in Practice" boxes, which bring the experiences and perspectives of sports officials, officiating educators and administrators, and sports scientists from around the globe to light. These provide real-world examples and lessons for how decision making can be improved in various sporting contexts.Decision Making for Sports Officials: Training and Assessment Perspectives is a core resource for enhancing decision making in the high-stakes world of sports officiating.