What does a Polygraph look like?

Polygraph Measures

How accurate is a polygraph?

http://www.truthorlie.com/accurate.html

Physiological Arousal to an applied stimulus:

Heat Rate/ Blood Volume
Sweat Gland Activity
Respiration or Breathing


How to detect lies:

http://www.wikihow.com/Detect-Lies
Can drugs effect a polygraph test?

http://effectofdrugsonpolygraph.blogspot.com/

Polygraph FAQ's

http://www.polygraphks.com/faq.htm

http://www.polygraphis.com/WebsiteFAQ.htm

http://www.omegapolygraph.com/polygraph-faq.htm

http://www.imbordinopolygraph.com/faq_examiners.htm

Difference Between Confession and Admission

Must give people a chance a reason to explain why they are sitting there to take the test.  

http://www.britannica.com/EBchecked/topic/197308/evidence/28378/Confessions-and-admissions

Are polygraph tests admissible in court in Kansas?

Kipp Low - Topeka Police Department: On Polygraph

Kipp Low with Janice and Donna
http://www.topekapolygraph.com/polygraph.htm


Polygraph Today

• Exciting technology and techniques

• The use of polygraph in treatment has brought polygraph back into court

• More private examiners than at any previous time since around 1988

http://www.polygraphplace.com/docs/information.shtml

• Still the most valid from for testing of truthfulness  

Utility v Accuracy Rates:

• Why do we conduct polygraphs?  

• The utility value of polygraph

          Confessions  admissions
          Exclusion of suspects
          Development of evidence/dues
          Monitoring of behavior
          Treatment

Where are Mistakes Made?
There is no Universal Lie Response
There are numerous emotions which produce physiological responses

http://en.wikipedia.org/wiki/Polygraphy

http://en.wikipedia.org/wiki/Voice_stress_analysis

http://en.wikipedia.org/wiki/Biometrics

Only one Polygraph Issue
 Process is from the time the person comes in the office through the test and after

Pretest interview - No difference between a small lie and a big lie - if one thing is being hidden there will be a trip-up in the test

http://www.policetest.info/police_polygraph_exam.htm

If the exam is mixed issue and the person has a significant reaction-
Administrator has a specific issue test to resolve the reaction
Interview the subject after the mixed issue
Must "weed" through the issues in the pretest exam