History 08/17/23 Flashcards
(34 cards)
Polygraph
Originated from the Greek word poly meaning “many” and graphos meaning “writings”.
Instrument is not a “lie detector”, a “box” or a “machine”
Instrument measures physiological changes
Examinee does not “beat” the polygraph, he or she “defeats” the examiner
1895- Angelo Mosso
Physiologist who was interested in the vascular system and the method of blood flow through the body.
Developed a scientific “cradle” that was balanced on a fulcrum.
The non aroused subject was placed in the cradle and the cradle remained balanced
When the subject was excited the “cradle” moved in the direction of the subjects head.
Mosso theorized that the use of the “cradle” demonstrated blood flowing to the head when a person is emotional (blushing).
Made the first reported accurate studies of fear and its influence on heart activities and respiration.
Ceasare Lombroso
Physiologist and criminologist
Developed a method to detect criminals before a crime was committed utilizing body measurements.
Author of “The Criminal Mind”
Tested thirty people and claimed to have 100% accuracy.
Known as the Father of Criminology
Developed the hydrosphygmomanometer
hydro water
sphygmo blood
mano hand
meter Measure
Hydrosphygmomanometer
The “arm cuff” for blood pressure measurements.
1895 1st scientific studies reported changes in blood volume and pulse rate using the forerunner to the plethysmograph with a specialized glove. Measure of blood in the hand which is placed in a container of water.
The hand is placed in a five gallon beaker of water. Emotions cause rise in blood pressure which caused the hand to swell and the water to rise in level within the beaker.
Stylus and smoked drum used to record results
Reaction occurs in that part of the body most threatened.
Plethysmic reaction
decrease of volume in blood in hand.
Giovanni Galvanni
1897- Physiologist studying the body’s internal electrical system and its effects
Was the first individual to conduct research pertaining to electrical resistance and the secretion of sweat
Galvanometer- instrument created to measure resistance of electricity in the body or electricity introduced into the body.
John Wheatstone
Refined the galvanometer:
Electricity is introduced into the body through the hand.
Wheatstone bridge- measures the point at which the body’s electricity and induced electricity are equalized.
Increased emotion results in less body electrical resistance.Galvanic skin response (GSR)-Result of mind excitations or impressions which causes the above.
1907- Veriguth
Coined the phrase “psychogalvanic skin reflex”
GSR due to reflex of skin conductance.
There is a decrease in body electricity with increased sweat which creates better conductance of the electricity.
Sticker
Sticker- 1st to make suggestion that psychogalvanic reaction should be used for detecting deception.
Sticker stated “the galvanic skin phenomenon is under the influence of exciting mental impressions and the will has no effect on it”.
Electrodermal Response
A measure of physiologic arousal determined by the skin’s resistance to electricity
Electrical field knowledge
Present
Observable
Change in emotions produces change in GSR
At death no GSR exists, weight of body is actually reduced by several grams.
Dr. William Marston
1915- Commissioned by the US Government to study the ability of lie detection to be used as a countermeasure for espionage in World War I.
Marston was a physiologist studying responses in the cardio-vascular system who had a particular interest in systolic contraction.
Systolic Stroke
aka Anacrotic limb
Systolic beat- apex of contraction
Diastolic Stroke
aka Catacrotic limb
Semi-lunar valves slam shut in diastolic stroke to create notch.
Marston
Made measurements with a sphygnomamonometer which was a discontinuous systolic blood pressure test.
This technique used a standard blood pressure cuff and stethoscope to take intermittent systolic blood pressure readings.
Found this method to be 97 % reliable.
Vittorio Benussi
1914- Physiologist studying respiratory
ratio using a sensor.
Observed that stress caused breathing
change with was called an “IE” change.
Inspiration/Expiration limbs
Normal breathing three parts inhale to five parts exhale.
A ratio of two to six or one to seven observed the subject was under emotional stress (lie).
The ratio would be greater before truth telling than afterwards and greater after lying than before lying.
1918- Harold Burtt confirmed Benussi’s theory.
John Larson
1921- Was completing his medical study at the University of Southern California at Berkley.
Credited as the “Father of Lie Detection”.
1920’s constructed a device that combined a plethysmograph and a sensor that recorded respiratory activity.
Larson added a kymograph- wind up device which was the chart paper drive and made a permanent record utilizing ink and paper.
Originally designed an instrument for the Berkley Police Department which took half an hour to set up. The pens did not use ink so the paper had to be smoked which left a greasy surface which the pens could scratch.
Tested utilizing pictures.
Picture of Larson’s polygraph in text.
1923- Frye vs United States
Frye was convicted of 2nd Degree Murder
Defendant offered an expert witness to testify to the result of a lie detector test.
Test given by Marston showed that Frye was truthful.
Marston’s attempt to testify was denied.
Test was a discontinuous systolic blood pressure test
Appeal taken: Larson testified that Marston had not established sufficient physiological base for his opinion.
Court ruled insufficient research existed to validate the effectiveness of the polygraph
Frye confessed in 1921, paroled 1939, later recanted confession and died in 1953.
Legal basis for admission is the general acceptance within the scientific community.
Court determined that “lie detection” did not meet the general acceptance standard.
Daubert vs Dow Pharmaceuticals
US Supreme Court
Not a polygraph case, was a scientific evidence case. Polygraph included as scientific evidence.
Judge must consider all reliable scientific evidence but does not have to allow it into proceeding.
To be “scientifically accurate” requires 90% reliable.
509 U.S. 579 (1993)
Eliminated the “general acceptance” rule established by Frye v. United States.
Lee
Captain (CD) Clarence D. Lee, Berkley CA Police published one of first polygraph books “The Instrumental Detection of Deception”
Book is available for review in our library- contained in notebook form
Leonarde Keeler
Developed three component instrument:
Pneumograph
Cardiograph
Galvanometer
Plus kymograph
1st to use all together
Considered the “Father of Modern Polygraph”
Credited with introducing the “card test” as a specialized peak of tension “control test” for comparison to relevant questions as a “lie pattern”
Developed metal tambours for the pneumograph and cardioshygmograph
A bellows like device
Soft metal accordion pleated chamber
1st construction of this instrument was on a bread box platform. A piston was attached to a union box that would swivel with movement of the tambour
Keeler later employed by Chicago PD as a polygraph examiner
Opened first polygraph school
First Director of school was Jack Harrison
Developed the 1st technique used in polygraph which was the relevant/irrelevant technique
First to introduce polygraph to police work
First to introduce polygraph in security work
Openly argued with Larson who believed that only PHD’s should use the polygraph-debate still continues today with philosophical split in polygraph associations
Relevant-IrrelevantR-I
Developed by Leonarde Keeler
Relevant- question is specifically related to the crime.
Irrelevant- question has nothing to do with the crime
Interspersed with questions for emotional relief
1935 John E. Reid
Developed “control question”
Fred Inbau was Reid’s supervisor,
also Inbau taught at Northwestern University.
Reid worked in Chicago Forensic Lab.
Paul Trovillo is Chicago Police polygraph examiner
Reid founded the Reid Associates School for Lie Detection
Trained Richard Arther
Wrote four books on interrogation
Wrote two books on the polygraph
Developed the Reid Behavior Analysis Interview Training
Established the Reid College for Detection of Deception which gave a Master’s Degree upon completion (MSDD)
Six month program- in school for approximately 6 weeks and remaining period conducting examinations
Control Question Technique
Always received “no” answer with expectation of “no” being a lie.
Based on subjects earlier in life experiences
Psychological set- better definition
Control Question- developed for the purpose of using contrasting reactions to observe guilt or innocence, truth or deception on chart.