What is Time Period Effect

The excessive media coverage of mass gun violence has contributed to the public perception of an epidemic. These senstionalized media accounts highlight statistics suggesting a dramatic rise of the phenomenon. This chapter provides an in-depth analysis and comparison of open-source datasets to identify methodological weaknesses and clarify the prevalence of the problem. Findings illustrate the definitional, temporal, and data collection issues impacting the accuracy of assessment. This deconstruction of research counters the perception of a substantial rise in mass gun violence and suggests rates will vary depending on the typological phenomenon being investigated. A discussion of findings illustrates the importance of continuing the examination of mass gun violence and provides comprehensive guidelines for future research assessing the frequency of the phenomenon.