Welcome to Clayton Polygraph

David J. Clayton is a Certified Polygraph Examiner licensed to conduct polygraph examinations in the State of Mississippi. A former detective with Hattiesburg Police Department. Mr. Clayton has 14 years experience in investigations. Mr. Clayton is a graduate of Texas Department of Public Safety Law Enforcement Polygraph School located in Austin, Texas. Mr. Clayton is a graduate of William Carey College located in Hattiesburg, Mississippi where he obtained a Bachelor of Science degree in Psychology. Mr. Clayton has spent the majority of his law enforcement career as a police detective. As a law enforcement professional, Mr. Clayton has conducted polygraph exams dealing with criminal violations of State Law. He has assisted in cases concerning embezzlement, theft or burglary, rape, child abuse and murder. He has assisted with Internal Affairs complaints for local law enforcement.


I have extensive experience in conducting polygraph related assessments as a part of psycho-sexual evaluations for clients under treatment for sex addiction and/or drug and alcohol addiction.


Mr. Clayton is a 19 year veteran with the Mississippi Army National Guard. He has had numerous citations and medals of professional conduct in both his military and law enforcement careers. In his private career as a licensed Polygraph Examiner, Mr. Clayton has been able to bring closure to incidents ranging from fractured trust of a spouse or loved one, employee theft, professional misconduct of Medical Doctors, Attorney's, or Commercial Pilots. He has been involved in resolving false allegations of child sexual abuse when a parent's are accused on touching their own loved ones. He has assisted clinical therapists in obtaining full disclosure from clients suffering from drug, alcohol, or sexual addictions. He has extensive experience in the therapeutic use of the clinical polygraph.


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Mr. Clayton is a 19 year veteran with the Mississippi Army National Guard. He has had numerous citations and medals of professional conduct in both his military and law enforcement careers. In his private career as a licensed Polygraph Examiner, Mr. Clayton has been able to bring closure to incidents ranging from fractured trust of a spouse or loved one, employee theft, professional misconduct of Medical Doctors, Attorney's, or Commercial Pilots. He has been involved in resolving false allegations of child sexual abuse when a parent's are accused on touching their own loved ones. He has assisted clinical therapists in obtaining full disclosure from clients suffering from drug, alcohol, or sexual addictions. He has extensive experience in the therapeutic use of the clinical polygraph.


What is a Polygraph?

The polygraph is a scientific, diagnostic instrument used to measure the physiological response of an examinee under controlled conditions. These physiological changes--breathing, blood pressure, pulse rate and amplitude, and the galvanic skin reflex--are the phenomena with which the polygraph examiner concerns himself.


The term "polygraph" literally means "many writings." The name refers to the manner in which selected physiological activities are simultaneously recorded. Polygraph examiners may use conventional instruments, sometimes referred to as analog instruments, or computerized polygraph instruments. It is important to understand what a polygraph examination entails. A polygraph instrument will collect physiological data from at least three systems in the human body. Convoluted rubber tubes that are placed over the examinee's chest and abdominal area will record respiratory activity. Two small metal plates, attached to the fingers, will record sweat gland activity, and a blood pressure cuff, or similar device will record cardiovascular activity. A typical polygraph examination will include a period referred to as a pre-test, a chart collection phase and a test data analysis phase. In the pre-test, the polygraph examiner will complete required paperwork and talk with the examinee about the test. During this period, the examiner will discuss the questions to be asked and familiarize the examinee with the testing procedure. During the chart collection phase, the examiner will administer and collect a number of polygraph charts. Following this, the examiner will analyze the charts and render an opinion as to the truthfulness of the person taking the test. The examiner, when appropriate, will offer the examinee an opportunity to explain physiological responses in relation to one or more questions asked during the test. It is important to note that a polygraph does not include the analysis of physiology associated with the voice. Instruments that claim to record voice stress are not polygraphs and have not been shown to have scientific support (taken from American Polygraph Association www.polygraph.org)


Basic Uses of a Polygraph

The polygraph should be a supplement to, not a substitute for, a thorough investigation. The effectiveness of the polygraph examination, to a large extent, will be based upon the thoroughness of the investigation, prior to having the person take the examination. To maximize the effectiveness of the polygraph examination, the persons involved in developing and/or presenting the case information should work together as a team. Polygraph is very useful in private investigations. Polygraph can assess aspects of cases that is usually not available through other means of detection.

Employee Testing must follow strict guidelines of EPPA
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