According to David-Ferdon and Simon (2014), why is youth violence such a critical problem, and what are the costs?

According to David-Ferdon and Simon (2014), why is youth violence such a critical problem, and what are the costs? Describe the study design used by Finkelhor et al. (2014). Include the sample population, and data collection and analysis methods. What were the limitations of this type of study? What were the findings? Overall, what does the evidence show to be true about youth violence prevention programs, and how should they be implemented in the future to be most effective? Be sure to cite three to five relevant scholarly sources and APA style]]>