Designation:E2439−09StandardGuideforInstrumentation,SensorsandOperatingSoftwareUsedinForensicPsychophysiologicalDetectionofDeception(Polygraph)Examinations1ThisstandardisissuedunderthefixeddesignationE2439;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstheminimumrequirementsforinstru-mentation(bothanalogandcomputerizedsystems),sensorsandoperatingsoftwareusedintheforensicpsychophysiologi-caldetectionofdeception(PDD).Asaminimum,suchinstrumentationshallsimultaneouslyrecordanindividual’srespiratory,electrodermal,andcardiovascularactivity.1.2Thisguidedoesnotprohibitadditionalcomponents,whichmaybeofferedassupplementalmeasurementsofphysiologicalchange.Additionalrecordingcomponentsmaybeusedinadditiontobutnottoreplacetherequiredminimumcomponents.2.ReferencedDocuments2.1ASTMStandards:2E1954PracticeforConductofResearchinPsychophysi-ologicalDetectionofDeception(Polygraph)E2000GuideforMinimumBasicEducationandTrainingofIndividualsInvolvedintheDetectionofDeception(PDD)E2035TerminologyRelatingtoForensicPsychophysiology2.2OtherDocument:ManufacturerManual(s)forSystem(s)inUse3.Terminology3.1DefinitionsofTerms—SeeE2035.3.2Terminologymayvaryaccordingtodifferentmanufac-turers.4.SignificanceandUse4.1ThisguidesetsforththeminimumrequirementsforinstrumentationandsoftwarewhenconductingPDDexamina-tions.ForadditionalinformationseePracticeE1954andGuideE2000.5.MinimumRequirementsforPolygraphInstrumentationandSoftware5.1Aminimumoftwochannelsofrespiratoryactivityshallbesimultaneouslyrecorded,onethoracicandoneabdominal.5.1.1Aminimumofonechannelofexosomaticelectroder-malactivity,viaresistanceorconductance,shallberecorded.5.1.2Aminimumofonechannelofcardiovascularactivityshallberecorded.5.1.3Additionalchannelsmayberecordedbutshallnotbeusedinplaceofrespiration,electr...
