This paper raises a series of issues relating to how we might understand and respond to developments both in terrorism and in terrorism research. While the events of 9/11 have marked a critical turning point in the establishment of a strong sense of momentum in research efforts, it may be premature to support a call for the establishment of terrorism studies as a distinct discipline. Terrorism remains a multidisciplinary subject and, in this respect, it is important that debate ensues both within and between disciplines in terms of ascertaining the relevance of individual disciplines, and the disciplinary boundaries that exist between different perspectives. The author presents a discussion of some issues emerging from psychological perspectives on terrorism, and raises the need to consider the behavior of the State in models of non-State terrorism.