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Forensic Science and Technology Commons™
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Articles 31 - 43 of 43
Full-Text Articles in Forensic Science and Technology
Physical Match: Unique Fracture Patterns In Wooden Popsicle Sticks, Yiu Ming Sunny Lau
Physical Match: Unique Fracture Patterns In Wooden Popsicle Sticks, Yiu Ming Sunny Lau
Themis: Research Journal of Justice Studies and Forensic Science
Physical match (or physical fit) evidence was considered reliable in court for years, until the Daubert case, which required standardized scientific methodology on all forensic evidence. Physical matching faces the same criticism as other forms of physical evidence (specifically, that it lacks a scientific foundation). Physical matching is based on the idea that when an object is fractured, the shape of each fragment is unique and it is not possible to recreate a fragment that is identical to any other. In this study, fifty wooden popsicle sticks were broken in half, the pieces were mixed, and then reconstructed using physical …
Forensics’ Fight: A Need For Aggressive Strategies Against Confirmation Bias, Madison Mcgowan
Forensics’ Fight: A Need For Aggressive Strategies Against Confirmation Bias, Madison Mcgowan
Themis: Research Journal of Justice Studies and Forensic Science
In 2009, the National Academy of Sciences produced a lengthy report illuminating significant weaknesses present within the forensic community. One complex fault found in forensics was conformation bias. Since it is within human nature to make decisions based on contextual information, assumptions, and pre-held opinions, confirmation bias is an issue that will continue to persist. Therefore, stronger efforts must be made to recognize and abate the problem of bias within the field of forensics in order to preserve the notion that forensic science exists to serve principles of both truth and justice. Accordingly, this paper argues for the fight against …
An Evaluation Of Escience Lab Kits For Online Learning, Diana Orozco
An Evaluation Of Escience Lab Kits For Online Learning, Diana Orozco
Themis: Research Journal of Justice Studies and Forensic Science
Higher education online science courses generally lack the hands-on components essential in understanding theories, methods, and techniques in chemistry and biology. Companies like eScience Labs construct kits to facilitate online learning, which provide students with hands-on activities relevant to their science courses. In order to evaluate ease, efficacy, and comprehension of the forensic science kits by eScience Labs was completed while writing observations of the activities during and after completion; the lab manual learning objectives were compared to results of activities and two stopwatches took elapsed time of each activity to compare with the stated times in the kit manual. …
The Csi Effect: Fact Or Fiction?, Kavita Alejo
The Csi Effect: Fact Or Fiction?, Kavita Alejo
Themis: Research Journal of Justice Studies and Forensic Science
The CSI effect has been a subject undergoing intense scrutiny in recent years. With the ever-increasing number of television shows, such as CSI and all of its spinoffs, that poorly represent the field of forensic science, there has also been a growing concern over the effects that media has on the legal system. Prosecutors argue that the CSI effect raises their burden of proof and makes jurors more likely to acquit in cases involving little or no forensic evidence, while defense lawyers claim that jurors are more inclined to wrongfully convict based on their unrealistic perceptions of forensic evidence. This …
Applications Of Forensic Evidence In Criminal Cases, Emily Wheeler
Applications Of Forensic Evidence In Criminal Cases, Emily Wheeler
Themis: Research Journal of Justice Studies and Forensic Science
In 2003, Massachusetts governor Mitt Romney proposed a plan for an infallible death penalty that required irrefutable scientific evidence, effectively removing any doubt regarding potential innocence in death penalty cases. Forensic science encompasses many scientific disciplines including natural sciences and pattern analysis, but not all such areas experience equal amounts of general acceptance or influence in criminal cases. While DNA analysis and fingerprint identification using the Integrated Automated Fingerprint Identification System (IAFIS) are both widely accepted forensic applications, recent events expose concerns regarding the authenticity of other disciplines such as hair and bite mark comparison. Before policymakers address the issue …
The Utilization Of Mobile Technology For Crime Scene Investigation In The San Francisco Bay Area, Marc Logrande
The Utilization Of Mobile Technology For Crime Scene Investigation In The San Francisco Bay Area, Marc Logrande
Themis: Research Journal of Justice Studies and Forensic Science
The research presented aims to explore factors affecting the decision to adopt a mobile crime scene investigation application in police departments throughout the San Francisco Bay Area. To accomplish this goal, the mobile technology acceptance model was used in designing a survey for data collection. This model utilizes four categories to interpret the factors that influence a police officer’s decision to accept or reject mobile technologies: performance, security and reliability, management style, and cognitive acceptance. Nine police departments were sampled through a series of in-person and over-the-phone interviews to obtain data regarding factors affecting the adoption of a mobile crime …
Beyond Dna: Epigenetics And Proteomics In Forensic Science, Diane F. Eilerts
Beyond Dna: Epigenetics And Proteomics In Forensic Science, Diane F. Eilerts
Themis: Research Journal of Justice Studies and Forensic Science
The use of genetic evidence in criminal cases is well established and has improved the public opinion and credibility of forensic science. However, several shortcomings associated with current genetic profiling techniques exist. Scientific research aimed at increasing the overall knowledge and understanding of biological factors will lead to the development of methods capable of improving the discriminating power of DNA evidence, overcoming limitations associated with DNA evidence, or complementing current methods of DNA profiling. Increased research in the fields of epigenetics and proteomics are particularly promising and relevant to forensic science. Research suggests that epigenetic biomarkers can be used to …
The Use Of Criminal Profilers In The Prosecution Of Serial Killers, Chelsea Van Aken
The Use Of Criminal Profilers In The Prosecution Of Serial Killers, Chelsea Van Aken
Themis: Research Journal of Justice Studies and Forensic Science
The purpose of this paper is to analyze the concept of criminal profiling in terms of serial killers in the United States. The research provided in this paper was found using the most recent research available on the topic. The FBI’s Behavioral Unit, or National Center for the Analysis of Violent Crime (NCAVC), is the current leading law enforcement agency that investigates these types of crimes. They utilize definitions, typographies, and motives to create a criminal profile to investigate serial killings. Ultimately, these profiles are inadequate because they are inconclusive and exclude multiple suspects that are potentially dangerous. Therefore, criminal …
The "Csi Effect" And Its Potential Impact On Juror Decisions, John Alldredge
The "Csi Effect" And Its Potential Impact On Juror Decisions, John Alldredge
Themis: Research Journal of Justice Studies and Forensic Science
The “CSI Effect” was first described in the media as a phenomenon resulting from viewing forensic and crime based television shows. This effect influences jurors to have unrealistic expectations of forensic science during a criminal trial and affect jurors’ decisions in the conviction or acquittal process. Research has shown the “CSI Effect” has a possible pro-defense bias, in that jurors are less likely to convict without the presence of some sort of forensic evidence. Some studies show actors in the criminal justice system are changing their tactics, as if this effect has a significant influence, causing them to request unnecessary …
Reducing Contamination In Forensic Science, Carly Balk
Reducing Contamination In Forensic Science, Carly Balk
Themis: Research Journal of Justice Studies and Forensic Science
The sensitivity of modern forensic techniques has drastically increased, with sensitive technology detecting even the smallest traces of DNA evidence left behind. This has made it possible to detect DNA profiles deposited through contamination. When DNA contamination occurs in forensic science, it has the potential to change the outcome of a criminal investigation and may have significant social and financial repercussions. A compilation of global research shows that DNA evidence transfer can occur during forensic product manufacturing, the fingerprinting process, or even autopsy and crime lab examinations. These vital areas of the forensic investigation are vulnerable to contamination, and national …
Dna Typing Compatibility With A One Step Saliva Screening Test, Nicole Roda, Steven B. Lee, Brooke Barloewen, Tahnee Mehmet
Dna Typing Compatibility With A One Step Saliva Screening Test, Nicole Roda, Steven B. Lee, Brooke Barloewen, Tahnee Mehmet
Themis: Research Journal of Justice Studies and Forensic Science
Screening a substrate for bodily fluids is an extremely important step for locating areas that may contain DNA. Several different methods have been developed for saliva (1). The Phadebas® Forensic Press (PFP) test is a presumptive saliva test that utilizes a preloaded paper that will react with the enzyme amylase, a component of saliva (2-5). Because of its ability to screen for amylase while simultaneously locating stains, the PFP may prove to be an effective, rapid method for screening. However it is important to assess whether the PFP introduces any inhibitors (7) to downstream processing such as PCR amplification. Based …
Confirmation Bias: The Pitfall Of Forensic Science, Scott Moser
Confirmation Bias: The Pitfall Of Forensic Science, Scott Moser
Themis: Research Journal of Justice Studies and Forensic Science
As it stands, forensic science and its practitioners are held in high regard in criminal court proceedings due to their ability to discover irrefutable facts that would otherwise go unnoticed. Nevertheless, forensic scientists can fall victim to natural logical fallacies. More specifically, confirmation bias is “a proclivity to search for or interpret additional information to confirm beliefs and to steer clear of information that may disagree with those prior beliefs” (Budlowe et al., 2009, p. 803). To restore the integrity of the forensic sciences, the sources of confirmation bias need to be identified and eliminated. Accordingly, empirical studies have given …
Comparing Wearer Dna Sample Collection Methods For The Recovery Of Single Source Profiles, Corissa J. Harris, Amanda J. Cardenas, Steven B. Lee, Brooke Barloewen
Comparing Wearer Dna Sample Collection Methods For The Recovery Of Single Source Profiles, Corissa J. Harris, Amanda J. Cardenas, Steven B. Lee, Brooke Barloewen
Themis: Research Journal of Justice Studies and Forensic Science
Wearer DNA is the deposit of epithelial cells on clothing worn by an individual. Detection of the last individual to handle or wear an item is often an important and desirable determination in forensic science. The most commonly used collection methods for wearer DNA include swabbing and scraping. These often result in mixture profiles. Recently, adhesives have been introduced as a possible reliable method for the collection of biological evidence. The goal of the research was to compare the current collection methods of swabbing and scraping with a gel film called Gel-Pak ‘0’ which shares similar properties with adhesives. Gel-Pak …