The Polygraph and Lie Detection (2003) / Chapter Skim
Currently Skimming:

#### Appendix I: False Positive Index Values for Polygraph Testing Pages 354-357

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.

 From page 354...... These ratios vary somewhat with the threshold selected, but they illustrate how much difference it would make if a high value of A could be achieved for field polygraph testing. If the diagnosis of deception could reach a level of A = 0.90, testing would produce much more attractive tradeoffs between false positives and false negatives than it has at lower levels of A Read the entire page → From page 355...... The figures are based on the binormal, equivariance model and are presented on logarithmic scales to make it easier to get accurate readings for very low base rates than is possible with standard scales such as presented in Figures 7-1 and 7-2. Read the entire page → From page 356...... 1— 80% 50% ~20% ~ \ \ _ ~ it. \ \ 1 1 1 1 1 1 111 1 1 1 1 1 1 111 1 1 1 1 1 1 111 =- 1 1 1 1 1 1 11 0.0005 0.005 0.05 0.50 0.0001 0.001 0.01 0.10 1.00 Base Rate of Poor Security Risks FIGURE I-1 False positive index values as a function of base rate of deception for a diagnostic procedure with an accuracy index (A) Read the entire page → From page 357...... ~ (in 1 0 5— 0.5— O . 1 ~ r ~ L ~ T ~ I I ~ [lI 0.0005 0.0001 0.001 80% ~50% ~20% I T ~ I I ~ TlI T 1 1 1 1 1 111 1 1 1 1 1 1 11 0.005 1 0.05 1 0.50 0.01 0.10 1.00 Base Rate of Poor Security Risks FIGURE I-4 False positive index values as a function of base rate of deception for a diagnostic procedure with an accuracy index (A) Read the entire page →

This material may be derived from roughly machine-read images, and so is provided only to facilitate research.