) Focus on a substantive issue in the area of extreme killing. provide a literature review and a critical analysis of the literature in an area of concern within the general area of extreme killing. For example, a comparison of environmental vs. biological explanations of extreme killing; historical changes in prevalence and trends; issues surrounding psychopathy and criminal vs. moral responsibility; a critical analysis of the various typologies used to understand extreme killing; issues surrounding the treatment of psychopaths; etc.