Forensic firearm examination plays a crucial role in criminal investigations by linking firearms to crime scenes and identifying potential suspects. However, the reliability and validity of forensic firearm examination methods have been subjects of debate and scrutiny. This paper provides an overview of the validation process for forensic firearm examination methods, explores the challenges associated with validation, along with the implications for forensic procedures and legal proceedings. Introduction: Firearm examination, also known as firearm identification or ballistics analysis, involves the examination of firearms, fired bullets, cartridge cases, and other related evidence to establish links between firearms, ammunition, and crime scenes …show more content…
Implications for Forensic Practice and Legal Proceedings: The reliability and validity of firearm examination techniques directly impact their admissibility and probative value in legal proceedings. Courts rely on forensic evidence to establish facts and inform judicial decisions, making it imperative that firearm examination methods meet rigorous standards of reliability and validity. Forensic practitioners must adhere to established protocols and quality assurance measures to ensure the credibility of their findings. Additionally, ongoing training and proficiency testing are essential for maintaining the competence of firearm examiners and upholding the integrity of forensic analysis. Conclusion: Reliability and validity are critical considerations in forensic firearm examination, influencing the accuracy and credibility of forensic evidence presented in legal proceedings.The field of forensic firearm identification is under heavy scrutiny for lack of scientific
Defining and Assessing Competency to Stand Trial. (2004, February 23). Criminal Forensics Competency. Retrieved March 10, 2014, from http://forensicpsychiatry.stanford.edu/Files/Criminal%20Forensics/Competency.2.pdf
If there was no weapon found at the scene and there are other evidence clues that lead to a suspect, and if the suspect had a firearm the forensics team would get a warrant to retrieve the weapon so it could be tested. When the weapon is being tested, it will allow the the bullet have individual marks that will be compared to the ones found at the scene. All of these comparisons are done under a microscope since technology has improved and it is easier to make matches. According to Young & Ortmeier (2011) “class characteristics include weight of the projectile, direction of twist of the riffling, degree of twist of riffling, number of lands and groves, and width of lands and groves.” Even though guns from the same manufacture will never have the same riffling, lands or grove. When evaluating two cartridge casings the examiner will be looking for manufacture, the size of the firing pin as well as the location. The FBI has made a integrated ballistic identification system (IBIS) it's a database that helps crime labs with comparisons where it proves one gun being used in many crimes. In addition, gunshot residue is helpful solving crimes because gunshot residue can be chemically tested. If an individual has gunshot residue it doesn't prove he or she shot the victims, it just means that they were along the premises while the gun was fired. Another
In this article, readers meet Mike Pence, a pro-life Indiana governor that was recently named as Donald Trump 's vice presidential running mate. The article discusses Pence 's involvement with pro-life legislation; Pence has signed a law that protects unborn babies with disabilities from being aborted. It also quotes his pathos loaded speech and mentions what a stark contrast Trump and Pence are to the pro-choice Hillary Clinton. Facts are well documented- the article includes a link to Pence 's emotional speech on YouTube as well as many other articles that support the author 's statements. Because this article is a month old, it is definitely recent. Consequently, this is a good source for those who want a current take on dealing with Roe
Violence related to guns is a prominent issue in America. Guns are a means to an end; meaning guns have played a strong role in suicides, murders, and injuries. In the past decade there has been an average of 400-500 thousand incidents of firearms per year (Gun Violence). The number of injured people from firearm incidents in the United States per year for the past decade is 400-600 thousand people (Gun Violence). These statistics are absolutely shocking to anyone. The amount of violence and crime that comes from guns is enormous. It is imperative that proper gun control is put into place by means of background checks and proper training. It can almost be certain that the number of incidents of accidental discharges from children and the number of victims affected by gun crimes in general can be highly reduced.
Therefore, the criminal justice system relies on other nonscientific means that are not accepted or clear. Many of forensic methods have implemented in research when looking for evidence, but the methods that are not scientific and have little or anything to do with science. The result of false evidence by other means leads to false testimony by a forensic analyst. Another issue with forensic errors is that it is a challenge to find a defense expert (Giannelli, 2011). Defense experts are required to help the defense attorneys defend and breakdown all of the doubts in the prosecutors scientific findings in criminal cases. Scientific information is integral in a criminal prosecution, and a defense attorney needs to have an expert to assist he/she in discrediting the prosecution (Giannelli,
The criminal justice system has changed a lot since the good old days of the Wild West when pretty much anything was legal. Criminals were dealt with in any fashion the law enforcement saw fit. The science of catching criminals has evolved since these days. We are better at catching criminals than ever and we owe this advancement to forensic science. The development of forensic science has given us the important techniques of fingerprinting and DNA analysis. We can use these techniques to catch criminals, prove people's innocence, and keep track of inmates after they have been paroled. There are many different ways of solving crimes using forensic evidence. One of these ways is using blood spatter analysis; this is where the distribution and pattern of bloodstains is studied to find the nature of the event that caused the blood spatter. Many things go into the determination of the cause including: the effects of various types of physical forces on blood, the interaction between blood and the surfaces on which it falls, the location of the person shedding the blood, the location and actions of the assailant, and the movement of them both during the incident. Another common type of forensic evidence is trace evidence. This is commonly recovered from any number of items at a crime scene. These items can include carpet fibers, clothing fibers, or hair found in or around the crime scene. Hairs recovered from crime scenes can be used as an important source of DNA. Examination of material recovered from a victim's or suspect's clothing can allow association to be made between the victim and other people, places, or things involved in the investigation. DNA analysis is the most important part of forensic science. DNA evidence can come in many forms at the crime scene. Some of these forms include hair; bodily fluids recovered at the crime scene or on the victim's body, skin under the victim's fingernails, blood, and many others. This DNA can be the basis of someone's guilt or innocence; it has decided many cases in the twentieth century. As the times continue to change and the criminals get smarter we will always need to find new ways to catch them. Forensic science is the most advanced method yet, but is only the beginning. As the field of science grows so will the abilities of the
In today’s time, modern Crime Scene Investigation has increased rapidly. From throughout the late 1900’s and in the early 2000’s (Taylor 1). For all of the evidence that they find, a solid foundation has formed over the thousands of years of Crime Scene
Forensic Science, recognized as Forensics, is the solicitation of science to law to understand evidences for crime investigation. Forensic scientists are investigators that collect evidences at the crime scene and analyse it uses technology to reveal scientific evidence in a range of fields. Physical evidence are included things that can be seen, whether with the naked eye or through the use of magnification or other analytical tools. Some of this evidence is categorized as impression evidence2.In this report I’ll determine the areas of forensic science that are relevant to particular investigation and setting out in what method the forensic science procedures I have recognized that would be useful for the particular crime scene.
The transitional growth in the forensic science sector has not been without challenges. Though the world has experienced increased capabilities and scientific knowledge, which has led to faster investigations and results, many forensic experts have argued that forensic laboratory testing, in the light of 21st century technological advancements, is yet to meet the expected rate in quick available testing and analysis (Mennell & Shaw, 2006). This is with respect to the growing rate of crime and the high demand of quick crime scene testing and analysis. In the science of crime scene, analysis and interpretation of evidence is majorly dependent on forensic science, highlighting the change in the role of forensic sciences (Tjin-A-Tsoi, 2013). In the business of forensic science, time is beginning to play important role in the evidence testing and analysis which is becoming crucial in reducing ...
Gun Violence is one of the United States most serious crime problems. The total cost of gun violence in the United States, including medical, criminal justice, and other government and private costs, are at least 6 to 12 billion a year (Cook, P. J. & Ludwig, J., 2000). The Bureau of Alcohol, Tobacco, Firearms and Explosives’ (ATF) mission is to track firearms. It reported that firearms sells have risen since 2005. According to the A...
Whereas the real picture of forensic evidence is unlike what is represented in movies and television shows where a fingerprint or a trace of hair is found, then it’s game over for the criminal. Reality is not as straightforward. As more people are exposed to the unreal forensic world through television and media the likeliness for a wrong conviction increases with juries assuming the evidence involves more science than what it really does, this is known as the CSI Effect. Further education and training is needed for the people of the court, the forensic specialists, and so called experts. The people in courts do not question any of the ‘professionals’ and just trust in their expertise. The court could overcome this perception by requiring explanation of error rates in a forensic field. To do this, testing examiner error rates will be necessary which means further research. Forensic science has such a large effect on the prosecution of suspects, experts have been known to provide questionable and at times incorrect evidence. When a false conviction occurs the true perpetrator is set free. Once realized, the public doubts the justice system and the reliability of the forensic evidence even more. At this point in time, forensic is an inexact
Much like in Toms case, most investigations start with a crime having been committed. Forensic ballistics and firearm investigation start when there are bullets, cartridges, a weapon, or any combination of the above found at a crime scene. With the evidence, a crime lab can search for clues on these items that could lead to a suspect or possibly prove that the items were used in the crime. By comparing the markings on bullets or cartridges found at the scene with those fired from a suspect’s weapon, a ballistics expert can often determine if the rounds came from the same weapon. Just the act of cycling a cartridge through a weapon without firing it can leave permanent scratches in the case that are unique to the weapon.
Jackson, A. and Jackson, J. (2004). Forensic science. 1st ed. Harlow, England: Pearson Prentice Hall, pg. 61.
The interaction between psychology and laws is based on the common focus of evaluating and understanding human behavior. Since psychologists are involved in assessing human behavior, they are called upon in certain legal cases to provide insights that may help the court to issue a sound ruling. Nevertheless, there are significant differences between psychologist working in clinical traditional settings and those conducting a forensic evaluation of the court. Psychologists may be asked to conduct both clinical and forensic assessment, and it is essential to understand the differences between the two. While clinical psychology deals with assessment, diagnosis, and treatment of human behavior and functioning,
One of the biggest gun control arguments out there is that firearms make it easy for criminals to do as they desire. One thing must be understood above all of these things, it ...