This volume examines diverse jury systems in nations around the world. These systems are marked by unique features having critical implications for jury selection, composition, functioning, processes, and ultimately, trial outcomes. These unique features are examined by applying relevant social psychological research, models and concepts to the central issues and characteristics of jury systems in those nations using a wide variety of jury procedures. Traditionally, research that has been conducted on juries has almost exclusively targeted the North-American jury. Psychologically-based research on European, Asian and Australian juries has been almost non-existent in the past decade or more. Yet, the incidence of jury trials outside of North America has been steadily increasing as more nations (e.g., Japan, Spain, Russia, and Poland) adopt, revise, or expand their use of juries in their legal system. Accordingly, research has been appearing in the scientific literature on new developments in world juries (particularly in Spain, Japan, and Australia). This volume fulfils the dual purpose of understanding the diverse practices in world juries in light of existing social psychological knowledge and applied research on juries in each nation, and outlining new research in the context of the issues raised by jury practices beyond those of North America.