The Polygraphs Scientific Validity

One of the difficulties faced by scientific evidence is admissibility in the court of law, validity of running gameing is part of the process for encounter requisite standards; the validity of the polygraph stress has proven to be a hurdle difficult to overcome. There are two theater reasons why an overall measure of validity is not possible. First, the polygraph running p get down is, in reality, a very complex process that is some(prenominal) much than the instrument. Although the instrument is essentially the same for all applications, the types of individuals probeed, education of the examiner, purpose of the test, and types of questions asked, among other factors, stick out differ substantially. A polygraph test requires that the examiner infer antic or truthfulness pes on a comparison of the persons physiological responses to various questions. For example, there are differences between the testing procedures go for in criminal investigations and those utili ze in personnel good screening. Second, the research on polygraph validity varies widely in impose on _or_ oppress of not only results, but also in the pure tone of research design and methodology. Thus, conclusions about scientific validity fanny be made only in the context of particular(prenominal) applications and even then must be tempered by the limitations of available research evidence (U.S.

Congress, Office of Technology Assessment, 1983). Psychologist Leonard Saxe, PhD, has argued, the idea that we can detect a persons veracity by hold open psychophysiological changes is more myth than reality. Even the term lie detector, utilise to refer to polygraph testing, is a misn omer. So-called lie detection involves infer! ring lie through analysis of physiological responses to a structured, but unstandardized, serial of questions (The Truth About Lie Detectors (aka Polygraph Tests)). The American Polygraph Association believes that a polygraph can be valid if certain criteria are met: A valid examination requires a combination of a refine trained examiner, a...If you want to get a full essay, lay it on our website: OrderEssay.net

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