Investigative Technology Review and Critique Essay

Dr. Derek Paulsen examines geographic profile methods and technologies. The findings be the result of a research grant from the National Institute of Justice (NIJ). The purpose of this research is to go the accuracy of and suggest methods for increasing the effectiveness of geographic compose technologies. The research emphasizes the importance of making the tubercle between commuter or despoiler offenders prior to geographic write. Dr.Paulsen demonst puts that by improving the commuter/marauder divination early in the process and by conducting more targeted research in the field, geographic compose technology can be more effective and results can be more accurate. Geographic profiling has been used in crime abbreviation since the early 1990s. It is an investigative methodology that relies on location of affiliated crimes series as a means of find the next probable location known as an offender anchor point. According to Dr. Paulsen, 20 to 60 percent of crime series atomi c number 18 committed by commuters, and geographic profiling is highly inaccurate in predicting these series.Therefore, it is important to analyze variables and methods used to come apart commuters and marauders prior to geographic profiling. This study analyzed 106 crime series gathered from 25 U. S. jurisdictions. This study differed from conventional methods in the use of variables applied to classify offenders as commuter or marauder. Traditional models use antechamber as primary variable to determine classification. Paulsen modified this method to look at any of 14 known variables which might classify as marauders where traditional models may classify as commuters and performing logistical regression with SPSS software.Since profiling is inaccurate in predicting commuter series, Paulsens results improved the accuracy of prediction rate from 60% to 81% by changing the classification process. The findings are significant in that they are at odds with traditional theories of offender patterns and characteristics. Traditional theories state that marauders commit offenses closer to home. However, Paulsens research shows that commuters contain in smaller geographic areas with more locations while marauders operate in larger more dust areas. Three important implications arise from this study.Further research is penuryed to develop a method for determining commuter/marauder classification that can be used in multiple geographic profiling systems. Research is needed to determine if methods and results are accurate in various jurisdictions with differing demographics and crime characteristics. Alternative profiling and forecasting methods must be weighed against this and other existing research. Previous studies were limited in number, only two, and in scope, focusing on software platform features and case studies and covering limited jurisdictions.This study more immense in size and scope. The primary limitation of this study is that the entire sample con sists of previously solved crimes. This underscores the need to conduct similar research on unsolved crimes to determine the accuracy of this model when all variables are not known. Additionally the case selection process for this study is limited by the police departments precept for selecting cases to send for the study which is not addressed. Geographic profiling is a widely used crime analysis methodology which can and should be more effective.By analyzing existing results and modifying components of the profiling process crime prediction rates can be significantly improved. Improving results of geographic profiling will depend on continued research of adequate size and scope that focuses on alternative classification methods, a be sick of geographic locations, and solved and unsolved crimes. Reference Paulsen, D. (2007, September). Improving Geographic Profiling through Commuter/ robber Prediction. Police Practice & Research, 8(4), 347-357. Retrieved March 11, 2009, from Acad emic Search Premier database.