The Finapres (Volume Clamp) Recording Method in Psychophysiological Detection of Deception Examinations: Table 1 (Forensic Science Communications, October 1999)
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 1:
Descriptive Statistics and Point-Biserial Correlations With Role
Standardized Difference Scores |
|||||
---|---|---|---|---|---|
Innocent | Guilty | ||||
Measure | Mean | SD | Mean | SD | rpb |
Finapres Group | |||||
Skin Conductance Amplitude | .67* |
.80 |
-.46* |
.49 |
.66* |
Respiration Excursion | .45* |
.75 |
-.26* |
.39 |
.52* |
Finapres Amplitude | .49* |
.92 |
-.31* |
.50 |
.49* |
Finapres Pulse Amplitude | .66* |
1.17 |
-.37* |
.67 |
.48* |
Heart Period Amplitude | .34 |
.86 |
-.11 |
.63 |
.30 |
n |
20 |
20 |
|||
Cardiograph Group | |||||
Skin Conductance Amplitude | .34* |
.70 |
-.49* |
.71 |
.51* |
Respiration Excursion | .08 |
.58 |
-.46* |
.61 |
.42* |
Cardiograph Amplitude | .44* |
.52 |
-.30* |
.63 |
.55* |
Cardiograph Pulse Amplitude | .42* |
.45 |
-.09 |
.59 |
.44* |
Heart Period Amplitude | .30* |
.59 |
-.27 |
.61 |
.43* |
n |
20 |
20 |
|||
Finapres/Cardiograph Group | |||||
Skin Conductance Amplitude | .51* |
1.01 |
-.44* |
.48 |
.53* |
Respiration Excursion | .51* |
.69 |
-.33* |
.52 |
.58* |
Finapres Amplitude | .28 |
.84 |
-.32* |
.61 |
.39* |
Cardiograph Amplitude | .25 |
.94 |
-.22 |
.60 |
.29 |
Finapres Pulse Amplitude | .30 |
1.16 |
-.53* |
.64 |
.41* |
Cardiograph Pulse Amplitude | .26 |
1.07 |
-.30* |
.54 |
.31* |
Heart Period Amplitude | .35* |
.56 |
-.38 |
.92 |
.44* |
n |
20 |
20 |
The rpbs are Pearson product moment correlations of the measures with Role. The difference score means were compared with 0.00 using two-tailed t tests. The value of 0.00 represents a difference of 0.00 between the mean relevant and control-question responses. Significant negative means indicate that the relevant-question responses were larger than the control-question responses; significant positive means indicate the reverse. SD = standard deviation.
* p < .05.