POLYGRAPH TESTING.   Term Paper ID:28897 Click to get this paper

Essay Subject: Discusses its usage as an investigative tool. History, concepts, pros & cons of testing, validity & reliability. Reviews studies & surveys police officers. 1 Figure.... More...

28 Pages / 6300 Words 32 sources, 69 Citations, APA Format $112.00 Return to List of Papers

Paper Abstract: Discusses its usage as an investigative tool. History, concepts, pros & cons of testing, validity & reliability. Reviews studies & surveys police officers. 1 Figure. Paper Introduction: POLYGRAPH TESTING: THE ACHILLES HEEL OF CRIMINAL JUSTICE Introduction: Statement of the Problem The use of polygraph testing is widespread in the United States. Elements of the criminal justice system at all levels, private sector employers, and various governmental agencies conduct polygraph testing in a broad spectrum of situations. The objective of polygraph testing in all of these situations, however, is the determination of the truthfulness of statements made by individuals concerning their own actions or their knowledge of events (Ghannam, 2000). If this narrative were the end of the story, the polygraph problem would not exist. Unfortunately, however, polygraph testing is the subject of long-standing and acrimonious disputes concerning its validity (Chapman & Lopresti, 2000). Text of the Paper: The entire text of the paper is shown below. However, the text is somewhat scrambled. We want to give you as much information as we possibly can about our papers and essays, but we cannot give them away for free. In the text below you will find that while disordered, many of the phrases are essentially intact. From this text you will be able to get a solid sense of the writing style, the concepts addressed, and the sources used in the research paper. levels private sectoremployers and various governmental agencies conduct polygraph testing Ghannam If this narrative were the end of thestory the testing Trial lawyers and civil libertarians tendto oppose polygraph testing the validity of polygraph testing the procedureremains on the question of the introduction of thatare favorable to defendants The criminal polygraph test is whether the police A research study tested one hypothesis police investigations and the use by police of polygraphtesting as serving police officers Thepurpose of police officers is to assess the perceived valueof the criminologist stated in that he could determine when measurements continue to be amajor component of contemporary polygraph combination of devices that specificthe physiological responses cuff attaches to a person's upper arm to indicator consists of two electrodesthat attach attachadditional components to the standard polygraph As tochairs with seats and armrests wired to monitor muscle the subject to both measureand record the subject's responses measured bythe polygraph instrument however thepolygraph test Henseler The capability of polygraph truthfulness The subjectivityof polygraph examiners' evaluations of each set of data within thecontext of interpretingphysiological responses tend to vary from case to and a subject's interpretation of events isequally possible It such situations results Similarly a lack of care by a polygraphexaminer in polygraph tests three approaches predominate application of fourth conceptual approach to polygraph testing designed to which only the perpetrator of a criminal act a subject remembers the details the subject the questions to which to cause similarphysiological responses to those a subject's physiological responses will bestronger to determination of deception insubject responses is relevant and irrelevant questions while the magnitude of the responses to both relevant andirrelevant questions McCall A drawback CQ technique The CQ approach involves the useof in the R-I approach however test examinerdirects subjects to make false denials to control questions comparative physiological responses to control of the physiological responses of that the subjected answered truthfully The reverse will be of the physiological responses of an untruthful subject to be of the polygraph test examiner The DLC technique falsely and relevant questions aboutthe are crucial to the outcome of the claim is that the DLC approach widens the untruthful subject as an increase approach it logicallyapplies only to truthful subjects A hybrid approach does not indicate that the false responses are crucialto the outcome The polygraph test examiner reliable than those produced by the The polygraph examiner scores subject physiological positive or negativecharacteristic to subject responses and a values to determine the overall level of asubject's truthfulness in character As the scoring of asubject's physiological responses for each response which will lead to separate examiners reach final results indicating truth and deception scoring is the absence of avalidated scoring the computerized scoringprocess Gallai The Reliability of is an indicator of untruthfulness orwhether it is simply physiologically to stressors Frater The validation of the accuracy get over this hurdlethrough the conduct of laboratory experiments responses to the questions posed to them Nocourts the polygraphtesting technique is a formidable barrier can create situationswherein a subject may no produce physiological responsesindicative of deception of such tests Theassumption that polygraph examiners are capable of distort theinterpretations of the polygraph test examiner One question will distort the difference between subject recordfalse negatives Henseler As indicated examiners differ substantially the reliability of thepolygraph test examiners one must know what the the type ofanxiety and pressure earlier laboratory studies cannot establish polygraph testswith information developed subsequently concerning both the actual by subjects Studiesconcerning the error rates of polygraph more accurate tosay that estimates of overall measure of validity can beestablished based on reliable than change and frequentlyare less reliable reliability of the CQapproach vary greatly Researchers such reported findings thatthe DLC approach issue ofthe reliability of polygraph testing Accepted standard procedures for licensing requirements exist United States v Pitner F Cordoba F Supp C D polygraph exam will not allow for an accurate error rate of the inability to determine ground truth under real-life polygraph of Daubert even without getting to the question of error better than the rate predicted by that If the polygraph were merely useless it would telling the truth Suppose people were positives for every true positive The polygraph gives the Figure on the following page illustrates the problems the remaining percent subjects are test would detect subversives where only are testing In Kleinmuntz and Szuckoobtained subsequent confessions of thesubjects and polygraph charts verified innocent subjects asguilty In Horvath as guilty The United States Supreme Court questioned the know in a particular case whether a polygraphexaminer's In the past years over studies have been conducted on have been more published studies done on polygraph that polygraph tests are valid Critics of polygraph of the qualitativecontext produced by the rooted not inpractices of modern science but rather drawing subjective psychologicalsounding conclusions in varying ways depending upon of Scientology is a series of conclusions about the more likely to create victims of of Polygraph Test Results As Evidence William M Marston use as evidence in criminal cases in his trial of polygraph test upheld theconviction The circuit court articulated Proponents of polygraph testing contend that polygraph appropriate field aspsychology where rejection of the validity court judges to decide on acase by case basis to gathering tool Savage p Further the the trial court refused to admit into evidence theresults of to the acceptance of polygraph test results affectthe use of polygraph testing testing for non-criminal purposes Because of theabsence overone-half of all major corporations commercial banks and polygraph testing process Most ofthe subsequent the efficacy of countermeasures Research indicates that subjectsmay polygraphtesting process Strong criticism emanating to introducepolygraph test results in to at a minimum to a essential element which to consider a polygraphy examination are enormous Gallai p The problem of prejudice becomes with probabilities rangingfrom seven to three or lower test examiners TheUnited States Appeals Court Fifth District States v Duque F R to accord to such Gallai Other critics of polygraph even an percent or a percentprobability is insufficient United States Appeals Court Ninth District ruledthat Allowing evidence for a juror or an individual convictions based on the fact that there is a deliberating in only one case trials as evidence will replaceone of the District ruled that When polygraph evidenceis offered in evidence Thus even if thescientific community accepted the reliability of polygraph ofpolygraph results as their own because of their scientific nature ofpolygraph testing directly Rather a as to her opinion of instance This is an evaluation that the jury the help of an expert Allowing an expert its own determination Under this model admitting investigation counter intelligence and civilapplications Most law enforcement organizations of polygraphtesting by criminal justice organizations include establishing thecredibility of using polygraph testing in criminaljustice environments include the of enquiry Gathering additional information and evidence and Assisting to as an investigative tool with not attempt tomanipulate the test v Posado The Fifth Circuit appliesDaubert to polygraph html Chapman J Lopresti R January Truth perjury equals polygraphy Journal of Criminal Law in federal courts Should it be admissible American from the U S Supreme Court's decision in Kumho lie detector fails the test Catholic University in Progressin science and the R Rogers Ed Clinical assessment of malingering anddeception E August Lies damned Lies and polygraph tests Insight Office of Technology Assessment Congress of the United States Scientific Sandia's Senior Scientists andEngineers Washington D C United States begins mass screenings February Science Government Report Tiner M v Duque F R D N polygraph testing is widespread in the United the determination of the truthfulness ofstatements made by individuals Chapman Lopresti Police and other members of the criminal justice support for each side inthe dispute Frater Members of the as evidencein courts in the the criminal justice community in suchsituations is to prevent polygraph testing as aninvestigating tool Harris Hypothesis An the criminal justice system attributable topublic perceptions that the procedure testing as aninvestigative tool H An combination of an extensiveliterature review limitations of polygraph testing in Concept History and Science Cesare purpose in making suchdeterminations he said to distinguish criminals from use of polygraph testing Science of PolygraphsDebated as galvanic skin response indicator and a skin's electrical conductivity which increases of a subject measures alterations inbreathing gauge swallowing contractions of the throat and voicemuscle tension physiological reactions when lying than polygraph instrument are objective and when performed properly accurate The a subject's credibilityin relation to testing The oppositionfocuses exclusively on the interpretation of relating specific physiological responses with truthfulness circumstances of each polygraph testingsituation the problem associated with variations in believe that he or sheis answering truthfully when the polygraph examiner in polygraph testingis crucial Conceptual Approaches in the Administration of Polygraph Testing While there relevant-irrelevant R-I technique The control question CQ technique the concealed knowledge CK technique evaluates truthfulness based on technique involve theability of know with certainty a subject's a pre-test interview The pre-testinterview acquaints a subject with the for surprise that may be inherent in unknownquestions of the polygraph testing techniquesused most frequently The assumption underlying the issueunder investigation Irrelevant questions involve such topics isthat the magnitude of the physiological responses of greater than the magnitudeof such responses to irrelevant questions untruthful Gallai The most widely applied control questions in the CQ approachare irrelevant to the issue to provoke physiological responses as wellas a subject's truthfulness Henseler The assumption underling the will be difficult for truthful subjects to make examiner-directed responses as directed by the polygraph be the answers given to relevant questions Therefore relation to control questions where the utterance of false to which the polygraph testexaminer DLC approach tells the subject that false the subject's physiological responses to thecontrol questions By Alogical appraisal of this claim however argues control and relevant questions Therefore ifthere respect to one set ofcontrol questions the to makefalse responses and tells sets of control questions Henseler Unfortunately neither the DLC approach either the DLCapproach or the far more complex based on test examiner judgment then compares the resulting sum of the ofpolygraph testing is that this last step in nature of polygraph scoring is noted by the to another Furthermore it is not testing has met indifference or rejection for themost part are nothing more than thesubjective produce different physiological responseswhen they are may produce a changein physiological response Further answers to the questions posed no basisin reality and that they will suffer no Henseler The question of knowing awarethat he or she is being untruthful Faulty memory time subject has no recollection of a murder he committed p Polygraph examiners evaluate the mental to thereliability of polygraph testing Countermeasures are actions takensubjects to polygraph test examiner The increasedmagnitude of the physiological or practice to be able to generatephysiological responses polygraph test examiner Thus if theperceptions of of determining errorrates in polygraph testing is made is awarethat the truth is already known he or exam and to obtain an independent verification of truth to error rates for different approachesto polygraph testing are those Thedevelopment of such information occurs through the conduct topolygraph testing and that error rates range from p An older study conducted by that could beconsidered significant pp Other studies concluded positives the approach has little scientific acceptance for theCQ approach The great majority of psychophysiologists however rejectthese findings Henseler Test examiner qualifications are In states no license is required for qualification ofpolygraph test examiners together cast a and examiner standards weighs heavily on the comes to the accuracy of the more suspect Until adequate minimum standards are adopted polygraph Cal A study by Phillips found and tails for truth-tellers then the results would be about of false-positive test results that positive results in out of liars and in out cancer test that was wrong federal facility wherein the assumption isthat rate for polygraph testing will generate Laboratory Earlier tests tended to mirror the results Agency in Chicago The study involved independently re-scored all polygraph charts and in the independently re-scored the polygraph charts Of theverified innocent may depend upon a variety States v Scheffer S Ct Proponents of polygraph testing real cases showed that the accuracy rate into evidence on a daily basis p Honts argues strongly all laboratory simulation studies as polygraph testing procedure and the polygraph self-fulfilling process measuring a series ofphysical and the examiner Buchanan p The result by confirmation by other means In fact there is paragons of guilt-however falsehood or guilt pressure for the evaluation of truthfulness The UnitedStates Supreme Court murder defendantJames T Frye that the trial the findings of afederal circuit court of besufficiently established to have gained general acceptance in of the validity of polygraph testing A more rational approach thatdefendants do not have a constitutional right to admit is that the decision indicated the Court's reluctance of polygraphevidence The defendant challenged the rule on administered by a federal governmentpolygraph polygraph testing by civilian employers While the EPPA casts a long shadow Before the enactment of the polygraph examinations thaneither the federal the workplace researchers and defense skeptical about the reliabilityof polygraph testing Giannelli Imwinkelried Another Dripps The strongest criticism of polygraph testing is that of most widelyapplied approach to polygraph testing Henseler admitted polygraph evidence usually will speak directly to tests to be admissible under certain circumstances have so persuasive in the eyes of of a million-to-one or even billions-to-one Polygraph test resultspresent indicate the bases of suchodds are agreement as tonecessary qualifications of examiners the jury would have results without question or to ignore them completelybecause he in determinations of guilt or innocence based on probability These on individualpieces of evidence linking each individual defendant or guilt is essentially trying the offered as inculpatory evidence in ten cases ten different juries because individual juries are incapable of Furthermore supporters of the jury system contend and evidence In this context ancient oracle of Delphi United evidence and make their owndeterminations of fact and credibility or alter their verdicts basedon contradictory polygraph evidence Henseler p results ofpolygraph testing Henseler The reality of expert is in effect making a judgment on the evidence they will accept and what reach a conclusion without fully analyzing all the evidence and Use and Value of Polygraph Testing Polygraph testing that the polygraph test is an importantinvestigative aid As the activities of known sexual offenders residing key to an investigation when all other standard investigative criminal justiceinvestigations it is an effective to more verifiable investigativetechniques police likely will not lose public British Columbia Civil Liberties Association R Summer Your rights in theworkplace Occupational Scheffer Trial Frater E September tests by feds ABA Journal Giannelli P B A critical look at the admissibility field application The Journal of General Psychology Honts C polygraph records Journal of Applied Psychology Iacono W G Patrick of liedetection Law Society Review Kornet A May The truth Daubert University of Illinois Law Review Nagareda R A March Problems with the Polygraph Science Sandia National Courtrejects a per se rule on polygraph evidence th Cir United States v S Ct polygraph testing the achilles heel of criminal justice Introduction Statement in abroad spectrum of situations The polygraph problem would not exist Unfortunately however polygraph testing with equal force Scientific testing as sofrequently is an invaluable resource Phillips With polygraphtest results as evidence in criminal trials The major justice community remainsunited however on perceived value of theprocedure within the criminal as follows H Public confidence in the reliability of policeinvestigations an investigative tool Research Methodology the literature review is to provide a use of polygraph testing in police investigations a person was lying based on measuredchanges testing Further theidentification of the bad apples in the human of subjects to questions placed to them by anexaminer The record changes inblood pressure The galvanic to the index and second fingers an example somepolygraph machines include pressure and bodymovements Tiner O'Grady The concept physiological responses to questions posed by thepolygraph examiner The tend to be more subjective than objective instruments to accurately measure asubject's physiological responses in not subjects' physiological responses mentioned above is one area of concern her or his own experience with polygraph testing and case for a singlepolygraph examiner and among polygraph examiners Henseler are susceptibleto distortion Both inaccurate memory and the inaccurate interpretation the quality of a polygraph examiner'sjudgment is of little preparing for and administering a polygraph test also lead polygraphtesting in criminal justice environments These especiallyfor criminal justice applications proved to be impractical for widespreaduse could know The major obstacles to of an event Honts Quick With respect to the three thesubject will respond during the caused by subject deception Honts Quick The relevant questions than to irrelevant questions the variation in a subject's physiological responses of an untruthfulsubject to of the R-I approach topolygraph testing is that it produces both control questions and relevant questions As the purpose of the use Comparison ofvariations in subject physiological responses to control and and relevant questionswill differ between truthful and untruthful subjects The a truthful subject will be greater in relation true for untruthful subjects The assumption is that the greater greater in relation to relevant is similar to the CQ technique in that it alsoinvolves issue under investigation The major difference between the DLCapproach and the test Theassumption is that this approach differencebetween subject responses to control and relevant questions and in themagnitude of the physiological to polygraph testing uses both the outcome of the polygraph test With respect to the second then evaluates variationsin a subject's physiological CQ approach Gallai There is responses to thequestions posed by the test magnitude for each response Thepolygraph or deception The evaluation may indicate is a subjective process however thevalidity of the differing final results Therefore the same exact test respectively Gallai p The development of a mechanism for each of the Polygraph Testing Some critics of the assumptions underlying a manifestation of nervousness anxiety fear confusion or another emotion of polygraph testing requires that involving the use of collegestudents in contrived situations and few in the scientific community have This barrier accompanies asecond barrier that requires a longer know the truthful nature of when he denies committing that murder even making suchdeterminations with any degree of accuracy is itself questionable technique used bysubjects is the self-infliction of pain when responses tocontrol and relevant questions posed above cultural variations among subjects also hold thepotential to distort testing procedure deteriorates Henseler Researchers attempt to establish the reliability truth is beforeone can know if a subject is that surrounds the standard polygraph exam It doesnot error rates applicable to differentapproaches to polygraph natureof events and the actual tests have yielded varying results Such studies indicate polygraph reliability range from below fifty percentto over ninety percent available scientific evidence but that polygraphs detect deception than chance Henseler Because the R-I approach to polygraph as Honts and Quick whosupport polygraph testing is even more accurate than the CQ approach theadministration of polygraph tests are not in place Similarly standardqualifying Supp W D Wash The absence of widely acceptedstandards Cal The combination of wide to be identified and we should not expect to conditions The addition of a standard-free environment surrounding the rates and accuracy United States chance alone If aninterrogator flipped not be so bad Unfortunately it is harmful screened and of them were wrong answer times out of and who would want with false results generated by not subversive the decision tree present a bias against the innocent of morethan the charts of one hundred polygraph tests verified as truthful by the subsequentconfessions of examined polygraph charts verified as innocent byusing validity of polygraphtesting The Court stated conclusion is accurate because certain doubts the accuracy of polygraph testing accuracy validity and reliability than on handwriting tests e g Iacono Patrick Kleinmuntz threat of criminal sanctions in the based on the traditions ofpolygraph testing itself Buchanan p In the mental state andset and training of each and veracity of specific statements or guilt false allegation than it is likely to invented the first polygraph instrument in This early instrument The case FryeV United States results supporting his claim ofinnocence the Frye Test when it heldthat test developers andexaminers comprise the field of polygraph testing iswidespread Henseler More allow or disallow such findings as evidence in United States Supreme Court upheld in United States v Scheffer a polygraph test favorable to the defendant that was asevidence in criminal trials is the federal in criminal justice environments therejection of the reliability of polygraph of any governmental oversight before the implementation of retailersadministered polygraph tests to job applicants and on a random research questioned the reliability of polygraph deliberately adopt strategies that provoke physiological responses thatwill from the scientific communityalso targets the court proceedings as evidence would be highlyprejudicial to if unsatisfied would require a verdict for the defendant Even and thus rather disturbing This fear acute in relation to evidence basedon probability to no more than nine to held that With the lack ofstandardization D N D Ga A juror testing contend that allowing theintroduction of the for criminal convictions Rather according tothis of polygraph exams whose error rates may range anywhere from expert to be certain when that error will occur In chance of accuracy But there is a good in which polygraph evidence is being offered most important roles of the jury at trial it is likely to be shrouded with testing concerns about rendering juries superfluous would remain Specifically and theirperceived ability to detect polygraph test examiner testifies asan expert as to whether the subject truthfully responded to the specific typically makes on its own Juries to offer her opinion to help the jury would at the polygraph results serves no useful purpose but has the in the United States usepolygraph testing The victims and witnesses evaluating the truthfulness ofsuspects on rare following Eliminating suspects Recognising false complaints Testing informants focus the investigation on particular suspects Although results to produce desired outcomes and as long as polygraph evidence Louisiana Law Review Buchanan B or Consequences Apolygraph screening program raises questions about the science and Criminology Dripps D A June Criminal Law Review Ghannam J September Truth be Tire CriminalJustice Harris N January The Law Review Honts C R October law North Dakota Law Review Horvath pp New York Guilford Kleinmuntz B Szucko on the News McCall J R Misconceptions validity of polygraph testing Washington D C UnitedStates Department of Energy Savage D G O'Grady D J Lie detectors in employment Harvard Civil Rights D Ga United States v Pitner States Elements of the criminal justice system at all concerning their own actions or theirknowledge of events community are strongsupporters of polygraph criminal justice community contend that in spite ofquestions concerning United States Dripps Even the criminal justicecommunity however splits the introduction of polygraph test results important question confronting the criminal justice communityconcerning the is fallible and frequentlyabused by inverse relationship exists between public confidence onthe reliability of and a limited survey of criminal justice The purposeof the limited survey of Lombroso and Italian psychiatrist and low abiding society Tiner O'Grady In variations in blood pressure DOE Begins Mass Screenings The polygraph is composed of a pneumatic chest tube Theblood pressure when a personperspires The galvanic skin response patterns Some applications of polygraph testing Sophisticated polygraph machines also may connect when beingtruthful The polygraph instrument attaches to interpretation of the meaning of the each of the questions posed by the examiner during a subject's physiologicalresponses within the context of a subject's orlying Thus each polygraph examiner assesses This situation means that the standards for subject behaviors Both asubject's memory such is not the case and the reverse case Inadequate examiner training leads to higher frequencies offaulty polygraph testing exist several conceptual approaches for the administrationof and The directed lie control DLC technique A subject responses to questionsthe answers knowledge of an event and theextent to which polygraph testing procedures and thepolygraph examiner reviews with The concern is the potential for surprise the R-I approach topolygraph testing is that as subjectname or subject address The basis for a a truthful subjectwill be similar not identical to both A subject who is truthfulshould produce similar but not identical approach to polygraph testing in thecontemporary period is the under examination Unlike irrelevant questionsused false denials on the part of a subject The polygraph CQ approach to polygraph testing is thatthe false responses to control questions the magnitude examiner than in relation to relevant questions the examiner expects the magnitude responses is at the direction directs a subject to answer responses by the subject tothe control questions increasing subject physiological responses tocontrol questions against such an outcome inrelation to the responses of an is any validity to the claim for the DLC polygraph test examiner directs a subject to makefalse responses but the subject that the false responses are crucialto the test nor the hybrid approach producetest outcomes that are more hybrid approach Scoring the Results of A Polygraph Test of numericalvalues The polygraph test examiner assigns both a subject's responses toa table of standard numerical the process causes polygraphtest evaluations to be objective fact that individual examiners may assign different numerical values beyond the realm of possibility to have The major problem with computer evaluations of the developers of being untruthful Other critics question the assumption thatdifferent physiological response different cultural backgrounds cancause subjects to react different to asubject Proponents of polygraph testing attempt to adverse consequences whether or notthey are untruthful in their the truth in order to validate lapses rationalization of events and several other factors one would not expect the subject to competency of subjects toparticipate in polygraph testing before the conduct generate physiological responses that will response to pain when responding to acontrol that will cause a polygraph examiner to the importance of control questions by subjects andpolygraph test more difficult by the same obstaclefaced by polygraph she is no longer under testthe polygraph results Henseler p Thus as stated that compare the findings of of court trials intensive police investigations and confessions percent to percent Kornet Bander stated that It would be the Congressional Office of TechnologyAssessment concluded that no however thatpolygraph testing outcomes are no more Honts Quick The results of studies testing the claims Henseler Honts and Quick also of major importance to the polygraph examiners and standards varyin states where major shadow on the validity ofpolygraph testing United States v side of inadmissibility as evidence The nature of the such exams This problem arises out exams will always remain suspect in the eyes that the polygraph detected thoselying at little the same as with a polygraph Phillips stated may incriminate people who are of truth-tellers that is more than nine false of the time p The decision tree presented in one-percent subjects are subversive and positiveevaluations that are false The polygraph discussed above in relationto the reliability of polygraph polygraph charts verified as deceptive by the process incorrectly classified percent of the subjects the re-scoring evaluated percent of thesubjects of identifiable factors thereis simply no way to however see things differently Honts stated that for truthful subjects was and for deceptive subjects There on the basis of the results of laboratorystudies useless for estimatingfield accuracy They argue that laboratory simulation instrument is an accretion of s technology and popular psychology signs with the machine and of thisprocess associative of the monitoring machines convincing evidence to suggest that the procedure is much may be defined Buchanan p Legal Acceptance rejected the test outcomes of the administration ofthis instrument for court refused to allow the introduction asevidence appeals that examined the case and theparticular field in which it belongs Henseler p however is to define the favorable polygraphresults in criminal cases has allowed district to adopt the technology as a reliableevidentiary Sixth Amendment and dueprocess grounds when test examiner Dripps A further obstacle federallaw the Employee Polygraph Protection Act EPPA does not directly EPPA in federal law did not regulatethe use of polygraph government or state criminal investigators Well lawyersbegan to question the accuracy of the problem confronting the proponents of polygraph testing is theissue of the AmericanMedical Association which has questioned the reliability of Legal critics argue that allowing the trier of fact the guilt or innocence of the defendant or acknowledged that the potential prejudicial effects of permitting a jury the jury that it becomes prejudicial juries and judges in best-case scenarios the subjective evaluations of polygraph very littlebasis to evaluate the conflicting expert testimony United or she is unable to determine how much weight critics contend further that an to a specific crime In this context the defendant based on probability It is not possible would likely bring back ten accounting for the error rate when they are that admittingpolygraph test determinations into criminal the UnitedStates Appeals Court Eighth Statesv Alexander F d th Cir will jurors adopt the results In real world situations juries do not receive the results allowing polygraph exams into evidence requires that an expert testify subject's credibility at a specific evidence they will not accept without at best the jury would ignore the expert and make is in current use in more than countries incorrections criminal an investigative aid the applications in thecommunity The positive aspects of techniques have been exhausted Narrowing the focus investigative tool As long as policeuse polygraph testing support for theirinvestigative efforts References Bander Y United States Retrievedfrom the Internet at http www bccla org positions privacy Outlook Quarterly Dripps D A Spring Police plus Polarized over polygraphs NationalJournal Gallai D Winter Polygraph evidence Imwinkelried E Winter Scientific evidence The fallout ofpolygraph evidence in the wake of Daubert The R Quick B D The polygraph C J Assessing deception Polygraphtechniques In about lying Has lying got a badrap Psychology Today Lehrer Reconceiving the right to presentwitnesses Michigan Law Review Laboratory September Polygraphs andSecurity A Study by a Subpanel of ABA Journal Science of polygraphs debated as doe Cordoba F Supp C D Cal United States of the Problem The use of objective of polygraph testing in all ofthese situations however is is the subject of long-standing and acrimonious disputesconcerning its validity the case provides some basis for rare exceptions however the results of polygraph testing remain inadmissible reason foropposition by some members of the question of the value of justice community justifies the potentialloss in public confidence in is unrelated to the use by police of polygraph The methodology for this study is a broad understanding of therole and Findings of the Literature ReviewThe Polygraph in the person's blood pressure His basket continues as the majorjustification for the standard polygraph has three components a blood pressurecuff a skin response indicator measures changes inthe of one hand The pneumaticchest tube strapped around the chest a pneumatic tube that stretches around asubject's throat to underlying polygraph testing is that a subject willproduce different physiological responses measured and recorded bythe The polygraph examiner makes judgments concerning in doubt Rather opponentsquestion the reliability and validity of polygraph There are no validated objectivestandards heror his evaluation of the unique In addition to the major problem of subjective interpretation thereis ofevents can lead to situations wherein a subject may value Gallai Nevertheless the role of tohigher frequencies of faulty polygraph testing results Gallai conceptual approaches areas follows Henseler The by police This approach known as the application of the CK techniques of polygraph testing usedextensively each technique requires polygraph test The latter activityeliminates the potential R-I technique is the oldest Relevantquestions are those questions that are directly pertinent to physiological responsesbetween relevant questions and irrelevant questions The assumption relevant questions will be observably a high proportion of false positiveassessments that a subject is is true of irrelevantquestions used in the R-I approach of controlquestions in the CQ approach is relevantquestions provides the basis for evaluating assumedvariations are as follows Henseler Because it to the control questions to which he made false concern for an untruthful subject will questions where the subject lies purposefully than in the use of both control questions the CQ approach is that the polygraph test examiner applyingthe increases subject stress therebyincreasing the magnitude of in turnimproves the reliability of the polygraph evaluation Henseler responses to control questions narrows thegap between responses to CQ and the DLCapproaches in relation to control questions With set ofcontrol questions he polygraph test examiner directs a subject responses to relevant questions and asubject's responses to both little point therefore of using examiner The polygraph test scoring processinvolves the assignment test examiner then sums the subject responses The polygraphtest examiner truth deception or uncertainty Henseler The claim by proponents claim is questionable at best The subjective may show deception according to one examiner and uncertainty according computerized scoring process to improve theobjectivity of polygraph physiological responses Thescoring parameters used in computerized scoring polygraph testing questionthe assumption that individuals felt by a subject that thevalidating researcher know the correct that the participants know have accepted the findings ofsuch contrived experiments researcher to know that a subject is events andactions Thus if a thoughhis denial is counter to reality Henseler Henseler The use of countermeasures by subjects is another obstacle responding to control orirrelevant questions posed by the by the polygraph test examiner Subjects require only minimal training comparisons physiological reactions to control andrelevant questions posed by a of polygraph testingthrough the determination of error rates The process being truthful When the subject seem possible both to recreate the conditions surrounding the usualpolygraph testing The studies that have established knowledge subjects had of those events that error rates are high for all approaches and that none of these estimates are free frommethodological difficulties better than chance but with error rates testing generates high levels offalse reported findings of percent accuracy Again however most psychophysiologists reject these standards for polygraph test examiners are not in place for polygraph rest administration and for the ranging error rates and the lack of operational attain any less varied results when it administration of the exam makes the result all v Cordoba F Supp C D a coin with heads for liars because it generates a large number liars The polygraph would generate to use a fire alarm or a polygraph testing It testing employees at a demonstrates that a percent accuracy to Lehrer p pic Source Sandia National performed by the thenwell-regarded Reid Polygraph other individuals Polygraph examiners from the Reid agencythen subsequent confessions made to police A group of polygraphexaminers then that while the degree of reliability ofpolygraph evidence and uncertaintiesplague even the best polygraph exams United Since separate studies based on analysis which is routinely admitted Szucko generally dismiss theresults of real world isnot possible The this context apolygraph test is a the rapport between both the examinationsubject generally conclusions unsupportable by consistent scientific logic or detect purveyors of falsehood or relied entirely on variations in a subject'ssystolic blood revolved around a claim by convicted The United States Supreme Court affirmed the thing from which any expert testimony is deduced must in which it belongs with respect toestablishing to scientific acceptance recently the United States Supreme Court while holding somecriminal cases The consensus of legal experts a Military Rule of Evidence barring the acceptance ordered bythe federal government and was law prohibiting the mandatory orcoerced use of testing as one reason forenacting the theEPPA private employers administered more basis tocurrent employees Drake Moskowitz As polygraph testing in testing The scientific community generally remains obscure accurate physiological measurement thereby rendering thepolygraph meaningless Nagareda CQ technique of polygraph testing the defendants The reasoning underlying this contention is asfollows Once courts that have held polygraph is a result of evidence which when labeled scientific becomes DNA evidence probabilities provide juries and judges withodds one Further as theearlier discussions in this literature review of polygraph procedure and a lack of thus is likely eitherto accept such results such tests as evidence into criminal trialswill result line of reasoning criminal convictions should rest to to be a deciding factor in a defendant's innocence simple terms if a polygraph is accurate and is chance that one defendant was wrongly convicted United States v Cordoba F Supp C D Cal which is the determination ofthe credibility of witnesses an auraof near infallibility akin to the will juries continue to weigh the lies' Henseler p Whenprovided with the opportunity jurors tend to both the results and the meaning of the questions asked during the exam The are more than capable of determining what worst cause the jury to potential of serving a harmful purpose Gallai p Current justification for use of polygraph testing incriminal justice settings is occasions eliminating innocent parties from suspicion and in monitoring to determine the veracity of information provided Providing a new polygraph testing is not a panacea for all theuse of the polygraph test is supplementary The polygraph as a truth detector Vancouver British Columbia of liedetection Skeptical Inquirer Drake L Moskowitz Polygraph evidence after United States v told Rejected job seekerschallenge results of polygraph spectrum of admissibility to inferinnocence The Advocate Henseler T Criterion development and validity ofthe CQT in F The effect of selected variables on interpretationof J J On the fallibility and reevaluation Polygraphadmissibility after Rock and Government Printing Office Phillips M October June Let trial judges decide High Civil Liberties Law Review United States v Alexander F d F Supp W D Wash United States v Scheffer levels private sectoremployers and various governmental agencies conduct polygraph testing Ghannam If this narrative were the end of thestory the testing Trial lawyers and civil libertarians tendto oppose polygraph testing the validity of polygraph testing the procedureremains on the question of the introduction of thatare favorable to defendants The criminal polygraph test is whether the police A research study tested one hypothesis police investigations and the use by police of polygraphtesting as serving police officers Thepurpose of police officers is to assess the perceived valueof the criminologist stated in that he could determine when measurements continue to be amajor component of contemporary polygraph combination of devices that specificthe physiological responses cuff attaches to a person's upper arm to indicator consists of two electrodesthat attach attachadditional components to the standard polygraph As tochairs with seats and armrests wired to monitor muscle the subject to both measureand record the subject's responses measured bythe polygraph instrument however thepolygraph test Henseler The capability of polygraph truthfulness The subjectivityof polygraph examiners' evaluations of each set of data within thecontext of interpretingphysiological responses tend to vary from case to and a subject's interpretation of events isequally possible It such situations results Similarly a lack of care by a polygraphexaminer in polygraph tests three approaches predominate application of fourth conceptual approach to polygraph testing designed to which only the perpetrator of a criminal act a subject remembers the details the subject the questions to which to cause similarphysiological responses to those a subject's physiological responses will bestronger to determination of deception insubject responses is relevant and irrelevant questions while the magnitude of the responses to both relevant andirrelevant questions McCall A drawback CQ technique The CQ approach involves the useof in the R-I approach however test examinerdirects subjects to make false denials to control questions comparative physiological responses to control of the physiological responses of that the subjected answered truthfully The reverse will be of the physiological responses of an untruthful subject to be of the polygraph test examiner The DLC technique falsely and relevant questions aboutthe are crucial to the outcome of the claim is that the DLC approach widens the untruthful subject as an increase approach it logicallyapplies only to truthful subjects A hybrid approach does not indicate that the false responses are crucialto the outcome The polygraph test examiner reliable than those produced by the The polygraph examiner scores subject physiological positive or negativecharacteristic to subject responses and a values to determine the overall level of asubject's truthfulness in character As the scoring of asubject's physiological responses for each response which will lead to separate examiners reach final results indicating truth and deception scoring is the absence of avalidated scoring the computerized scoringprocess Gallai The Reliability of is an indicator of untruthfulness orwhether it is simply physiologically to stressors Frater The validation of the accuracy get over this hurdlethrough the conduct of laboratory experiments responses to the questions posed to them Nocourts the polygraphtesting technique is a formidable barrier can create situationswherein a subject may no produce physiological responsesindicative of deception of such tests Theassumption that polygraph examiners are capable of distort theinterpretations of the polygraph test examiner One question will distort the difference between subject recordfalse negatives Henseler As indicated examiners differ substantially the reliability of thepolygraph test examiners one must know what the the type ofanxiety and pressure earlier laboratory studies cannot establish polygraph testswith information developed subsequently concerning both the actual by subjects Studiesconcerning the error rates of polygraph more accurate tosay that estimates of overall measure of validity can beestablished based on reliable than change and frequentlyare less reliable reliability of the CQapproach vary greatly Researchers such reported findings thatthe DLC approach issue ofthe reliability of polygraph testing Accepted standard procedures for licensing requirements exist United States v Pitner F Cordoba F Supp C D polygraph exam will not allow for an accurate error rate of the inability to determine ground truth under real-life polygraph of Daubert even without getting to the question of error better than the rate predicted by that If the polygraph were merely useless it would telling the truth Suppose people were positives for every true positive The polygraph gives the Figure on the following page illustrates the problems the remaining percent subjects are test would detect subversives where only are testing In Kleinmuntz and Szuckoobtained subsequent confessions of thesubjects and polygraph charts verified innocent subjects asguilty In Horvath as guilty The United States Supreme Court questioned the know in a particular case whether a polygraphexaminer's In the past years over studies have been conducted on have been more published studies done on polygraph that polygraph tests are valid Critics of polygraph of the qualitativecontext produced by the rooted not inpractices of modern science but rather drawing subjective psychologicalsounding conclusions in varying ways depending upon of Scientology is a series of conclusions about the more likely to create victims of of Polygraph Test Results As Evidence William M Marston use as evidence in criminal cases in his trial of polygraph test upheld theconviction The circuit court articulated Proponents of polygraph testing contend that polygraph appropriate field aspsychology where rejection of the validity court judges to decide on acase by case basis to gathering tool Savage p Further the the trial court refused to admit into evidence theresults of to the acceptance of polygraph test results affectthe use of polygraph testing testing for non-criminal purposes Because of theabsence overone-half of all major corporations commercial banks and polygraph testing process Most ofthe subsequent the efficacy of countermeasures Research indicates that subjectsmay polygraphtesting process Strong criticism emanating to introducepolygraph test results in to at a minimum to a essential element which to consider a polygraphy examination are enormous Gallai p The problem of prejudice becomes with probabilities rangingfrom seven to three or lower test examiners TheUnited States Appeals Court Fifth District States v Duque F R to accord to such Gallai Other critics of polygraph even an percent or a percentprobability is insufficient United States Appeals Court Ninth District ruledthat Allowing evidence for a juror or an individual convictions based on the fact that there is a deliberating in only one case trials as evidence will replaceone of the District ruled that When polygraph evidenceis offered in evidence Thus even if thescientific community accepted the reliability of polygraph ofpolygraph results as their own because of their scientific nature ofpolygraph testing directly Rather a as to her opinion of instance This is an evaluation that the jury the help of an expert Allowing an expert its own determination Under this model admitting investigation counter intelligence and civilapplications Most law enforcement organizations of polygraphtesting by criminal justice organizations include establishing thecredibility of using polygraph testing in criminaljustice environments include the of enquiry Gathering additional information and evidence and Assisting to as an investigative tool with not attempt tomanipulate the test v Posado The Fifth Circuit appliesDaubert to polygraph html Chapman J Lopresti R January Truth perjury equals polygraphy Journal of Criminal Law in federal courts Should it be admissible American from the U S Supreme Court's decision in Kumho lie detector fails the test Catholic University in Progressin science and the R Rogers Ed Clinical assessment of malingering anddeception E August Lies damned Lies and polygraph tests Insight Office of Technology Assessment Congress of the United States Scientific Sandia's Senior Scientists andEngineers Washington D C United States begins mass screenings February Science Government Report Tiner M v Duque F R D N polygraph testing is widespread in the United the determination of the truthfulness ofstatements made by individuals Chapman Lopresti Police and other members of the criminal justice support for each side inthe dispute Frater Members of the as evidencein courts in the the criminal justice community in suchsituations is to prevent polygraph testing as aninvestigating tool Harris Hypothesis An the criminal justice system attributable topublic perceptions that the procedure testing as aninvestigative tool H An combination of an extensiveliterature review limitations of polygraph testing in Concept History and Science Cesare purpose in making suchdeterminations he said to distinguish criminals from use of polygraph testing Science of PolygraphsDebated as galvanic skin response indicator and a skin's electrical conductivity which increases of a subject measures alterations inbreathing gauge swallowing contractions of the throat and voicemuscle tension physiological reactions when lying than polygraph instrument are objective and when performed properly accurate The a subject's credibilityin relation to testing The oppositionfocuses exclusively on the interpretation of relating specific physiological responses with truthfulness circumstances of each polygraph testingsituation the problem associated with variations in believe that he or sheis answering truthfully when the polygraph examiner in polygraph testingis crucial Conceptual Approaches in the Administration of Polygraph Testing While there relevant-irrelevant R-I technique The control question CQ technique the concealed knowledge CK technique evaluates truthfulness based on technique involve theability of know with certainty a subject's a pre-test interview The pre-testinterview acquaints a subject with the for surprise that may be inherent in unknownquestions of the polygraph testing techniquesused most frequently The assumption underlying the issueunder investigation Irrelevant questions involve such topics isthat the magnitude of the physiological responses of greater than the magnitudeof such responses to irrelevant questions untruthful Gallai The most widely applied control questions in the CQ approachare irrelevant to the issue to provoke physiological responses as wellas a subject's truthfulness Henseler The assumption underling the will be difficult for truthful subjects to make examiner-directed responses as directed by the polygraph be the answers given to relevant questions Therefore relation to control questions where the utterance of false to which the polygraph testexaminer DLC approach tells the subject that false the subject's physiological responses to thecontrol questions By Alogical appraisal of this claim however argues control and relevant questions Therefore ifthere respect to one set ofcontrol questions the to makefalse responses and tells sets of control questions Henseler Unfortunately neither the DLC approach either the DLCapproach or the far more complex based on test examiner judgment then compares the resulting sum of the ofpolygraph testing is that this last step in nature of polygraph scoring is noted by the to another Furthermore it is not testing has met indifference or rejection for themost part are nothing more than thesubjective produce different physiological responseswhen they are may produce a changein physiological response Further answers to the questions posed no basisin reality and that they will suffer no Henseler The question of knowing awarethat he or she is being untruthful Faulty memory time subject has no recollection of a murder he committed p Polygraph examiners evaluate the mental to thereliability of polygraph testing Countermeasures are actions takensubjects to polygraph test examiner The increasedmagnitude of the physiological or practice to be able to generatephysiological responses polygraph test examiner Thus if theperceptions of of determining errorrates in polygraph testing is made is awarethat the truth is already known he or exam and to obtain an independent verification of truth to error rates for different approachesto polygraph testing are those Thedevelopment of such information occurs through the conduct topolygraph testing and that error rates range from p An older study conducted by that could beconsidered significant pp Other studies concluded positives the approach has little scientific acceptance for theCQ approach The great majority of psychophysiologists however rejectthese findings Henseler Test examiner qualifications are In states no license is required for qualification ofpolygraph test examiners together cast a and examiner standards weighs heavily on the comes to the accuracy of the more suspect Until adequate minimum standards are adopted polygraph Cal A study by Phillips found and tails for truth-tellers then the results would be about of false-positive test results that positive results in out of liars and in out cancer test that was wrong federal facility wherein the assumption isthat rate for polygraph testing will generate Laboratory Earlier tests tended to mirror the results Agency in Chicago The study involved independently re-scored all polygraph charts and in the independently re-scored the polygraph charts Of theverified innocent may depend upon a variety States v Scheffer S Ct Proponents of polygraph testing real cases showed that the accuracy rate into evidence on a daily basis p Honts argues strongly all laboratory simulation studies as polygraph testing procedure and the polygraph self-fulfilling process measuring a series ofphysical and the examiner Buchanan p The result by confirmation by other means In fact there is paragons of guilt-however falsehood or guilt pressure for the evaluation of truthfulness The UnitedStates Supreme Court murder defendantJames T Frye that the trial the findings of afederal circuit court of besufficiently established to have gained general acceptance in of the validity of polygraph testing A more rational approach thatdefendants do not have a constitutional right to admit is that the decision indicated the Court's reluctance of polygraphevidence The defendant challenged the rule on administered by a federal governmentpolygraph polygraph testing by civilian employers While the EPPA casts a long shadow Before the enactment of the polygraph examinations thaneither the federal the workplace researchers and defense skeptical about the reliabilityof polygraph testing Giannelli Imwinkelried Another Dripps The strongest criticism of polygraph testing is that of most widelyapplied approach to polygraph testing Henseler admitted polygraph evidence usually will speak directly to tests to be admissible under certain circumstances have so persuasive in the eyes of of a million-to-one or even billions-to-one Polygraph test resultspresent indicate the bases of suchodds are agreement as tonecessary qualifications of examiners the jury would have results without question or to ignore them completelybecause he in determinations of guilt or innocence based on probability These on individualpieces of evidence linking each individual defendant or guilt is essentially trying the offered as inculpatory evidence in ten cases ten different juries because individual juries are incapable of Furthermore supporters of the jury system contend and evidence In this context ancient oracle of Delphi United evidence and make their owndeterminations of fact and credibility or alter their verdicts basedon contradictory polygraph evidence Henseler p results ofpolygraph testing Henseler The reality of expert is in effect making a judgment on the evidence they will accept and what reach a conclusion without fully analyzing all the evidence and Use and Value of Polygraph Testing Polygraph testing that the polygraph test is an importantinvestigative aid As the activities of known sexual offenders residing key to an investigation when all other standard investigative criminal justiceinvestigations it is an effective to more verifiable investigativetechniques police likely will not lose public British Columbia Civil Liberties Association R Summer Your rights in theworkplace Occupational Scheffer Trial Frater E September tests by feds ABA Journal Giannelli P B A critical look at the admissibility field application The Journal of General Psychology Honts C polygraph records Journal of Applied Psychology Iacono W G Patrick of liedetection Law Society Review Kornet A May The truth Daubert University of Illinois Law Review Nagareda R A March Problems with the Polygraph Science Sandia National Courtrejects a per se rule on polygraph evidence th Cir United States v S Ct If this paper is not what you are looking for, you can search again: Search for: or Click here to request an essay written just for you.