Through human history no society has ever existed free from crime. Recently the tendency of crime shows systematization, urbanization and wide area coverage day by day. It consequently makes the method of investigation scientific and scientific investigation becomes a universal invetigation method i...
Through human history no society has ever existed free from crime. Recently the tendency of crime shows systematization, urbanization and wide area coverage day by day. It consequently makes the method of investigation scientific and scientific investigation becomes a universal invetigation method in the society of advanced science and technology. Scientific investigation may be used in all investigative stages decisively contribrting to the important aread such as criminal discernment, collection and analysis of evidences. As it is continuously required to find a method to exactly discrimnate truth from falsehood background functioning as the main basis when a polygraph is used in investigation is based on psychophysiology. Using the physiological aspects showing specific responses as human mentality changes, a polygraph is an equipment recording on a graph the physiological changes represented when an examinee answers fixed questions. A examiner untegrades, analyzes and interprets the reeorded results, and decides truth or falsehood of the statement made by the examiee. Likewise a polygraph does a uesful role for investigative authorith to obtain confession from an examinee by using polygraph in investigation and infroming the polygraphing result without resorting physieal coercion. This thesis deals in general principle, examination eondition and procedure regarding a polygraph. It also deals in, by looking into the admissibility of evidence of polygraphing result at a court and the actual condition of operation in our country, various subsequent questions in examination, shortage as to polygraphers, insufficient uses except in criminal cases, and suggests three ways for improvement inviting an exertion fir realization. Firet is to suggest an efficient way of polygraphing. In order to verify truth from falshood of the statement made by a suspect and to collect evidences and clues of a case, which is the purpose of polygraphing, a polygraph should be used in the initial stage of unvestigation enabling an investigator to find apparent suspicions. It is the actual situation that polygraphing is not effectively used in such an initial stage due to the lack of recognition by forefront investigators. In order to realize improvement thereof, there should be a change in recognition of polygraph and polygraph examiners, and education on polygraphg should be intensified. Second is to suggest a wau of solution to the question of expertise of polygraph examiners. As there exists no certified education institution, it is necessary to install relevant departments in universities and colleges and National Institute of Scientific Investigation thereby enabling continuous and perpetual research and development. A policy should be prepared in personnel management area to provide appropriate consideration to the personnel management of polygraph examiners for their research and development as experts including payment of research allowances. Third is to suggest an active application of pre-employment test. Pre-employment test actively used in the U.S.A. is totally unused in our country except for criminal cases. It would be possible to prevent to a certain extent the losses that may arise after employment by selecting and employing good quality applicants after distinguishing them from inappropriate quality holders. In conclusion, in order to have polygraphing perform an important role as a means of technique in scientific investigation from the investigative stage of the police to the precedents of the Supreme Court, education of polygraph, performance of examination, analysis of examined outcome, evaluation and application to interrogation shoud be intensively conducted. Interest in polygraphs by the investigators engaged in investigation and all other crime related areas and political support can only work to improve the current problems involved with polygraphs. Simultaneously, as the polygraphing currently used by investigative authority are not commonly held by the learned circle in most cases, it would contribute a lot to scientific investigation when it is studied together.
Through human history no society has ever existed free from crime. Recently the tendency of crime shows systematization, urbanization and wide area coverage day by day. It consequently makes the method of investigation scientific and scientific investigation becomes a universal invetigation method in the society of advanced science and technology. Scientific investigation may be used in all investigative stages decisively contribrting to the important aread such as criminal discernment, collection and analysis of evidences. As it is continuously required to find a method to exactly discrimnate truth from falsehood background functioning as the main basis when a polygraph is used in investigation is based on psychophysiology. Using the physiological aspects showing specific responses as human mentality changes, a polygraph is an equipment recording on a graph the physiological changes represented when an examinee answers fixed questions. A examiner untegrades, analyzes and interprets the reeorded results, and decides truth or falsehood of the statement made by the examiee. Likewise a polygraph does a uesful role for investigative authorith to obtain confession from an examinee by using polygraph in investigation and infroming the polygraphing result without resorting physieal coercion. This thesis deals in general principle, examination eondition and procedure regarding a polygraph. It also deals in, by looking into the admissibility of evidence of polygraphing result at a court and the actual condition of operation in our country, various subsequent questions in examination, shortage as to polygraphers, insufficient uses except in criminal cases, and suggests three ways for improvement inviting an exertion fir realization. Firet is to suggest an efficient way of polygraphing. In order to verify truth from falshood of the statement made by a suspect and to collect evidences and clues of a case, which is the purpose of polygraphing, a polygraph should be used in the initial stage of unvestigation enabling an investigator to find apparent suspicions. It is the actual situation that polygraphing is not effectively used in such an initial stage due to the lack of recognition by forefront investigators. In order to realize improvement thereof, there should be a change in recognition of polygraph and polygraph examiners, and education on polygraphg should be intensified. Second is to suggest a wau of solution to the question of expertise of polygraph examiners. As there exists no certified education institution, it is necessary to install relevant departments in universities and colleges and National Institute of Scientific Investigation thereby enabling continuous and perpetual research and development. A policy should be prepared in personnel management area to provide appropriate consideration to the personnel management of polygraph examiners for their research and development as experts including payment of research allowances. Third is to suggest an active application of pre-employment test. Pre-employment test actively used in the U.S.A. is totally unused in our country except for criminal cases. It would be possible to prevent to a certain extent the losses that may arise after employment by selecting and employing good quality applicants after distinguishing them from inappropriate quality holders. In conclusion, in order to have polygraphing perform an important role as a means of technique in scientific investigation from the investigative stage of the police to the precedents of the Supreme Court, education of polygraph, performance of examination, analysis of examined outcome, evaluation and application to interrogation shoud be intensively conducted. Interest in polygraphs by the investigators engaged in investigation and all other crime related areas and political support can only work to improve the current problems involved with polygraphs. Simultaneously, as the polygraphing currently used by investigative authority are not commonly held by the learned circle in most cases, it would contribute a lot to scientific investigation when it is studied together.
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