The process by which decisions are made and evaluated varies between individuals, yet they are one of the most critically analysed parts of both fire engineering and emergency services response. In this presentation Dr Drummond will distill more than a decade’s worth of international research and explain in practical terms why this occurs, and what it means for fire safety professionals. The presentation is suitable for frontline emergency service personnel, fire engineers, and anyone who wants a greater understanding of the how and why of decision-making in complex and critical environments.