The Finapres (Volume Clamp) Recording Method in Psychophysiological Detection of Deception Examinations: Table 4 (Forensic Science Communications, October 1999)

U.S. Department of Justice

Federal Bureau of Investigation

October 1999   Volume 1   Number 3

The Finapres (Volume Clamp) Recording Method in Psychophysiological Detection of Deception Examinations: Experimental Comparison With the
Cardiograph Method

Table 4:

Outcomes of Independent Examiner Evaluations and Automated Computer Evaluations

	Frequency (Percent)
Group	Correct		Error		Incon- clusive		Correct Decisions
	Decisions Using Examiner Evaluations
Innocent
Finapres	14 (70)		3 (15)		3 (15)		14/17 (82)*
Cardiograph	10 (50)		5 (25)		5 (25)		10/15 (67)
Finapres/Cardiograph	10 (50)		2 (10)		8 (40)		10/12 (83)*
Guilty
Finapres	14 (70)		1 (5)		5 (25)		14/15 (93)*
Cardiograph	11 (55)		3 (15)		6 (30)		11/14 (79)*
Finapres/Cardiograph	11 (55)		3 (15)		6 (30)		11/14 (79)*
	Decisions Using Automated Evaluations
Innocent
Finapres	16 (80)		3 (15)		1 (5)		16/19 (84)*
Cardiograph	15 (75)		3 (15)		2 (10)		15/18 (83)*
Finapres/Cardiograph	14 (70)		0 (0)		6 (30)		14/14 (100)*
Guilty
Finapres	14 (70)		2 (10)		4 (20)		14/16 (88)*
Cardiograph	11 (55)		3 (15)		6 (30)		11/14 (79)*
Finapres/Cardiograph	13 (65)		4 (20)		3 (15)		13/17 (76)*

Accuracy of decisions was tested using c² tests of frequency correct versus frequency error. The decisions for the Finapres/cardiograph group examinations were based on skin conductance, respiration, and cardiograph recordings.

* p < .05.

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FORENSIC SCIENCE COMMUNICATIONS    OCTOBER 1999   VOLUME 1    NUMBER 3