Development
and Validation of the Objective Scoring System, version 3
by
Raymond Nelson, Mark Handler, and Donald Krapohl
**
NEW ** Lafayette Instrument's OSS-3 Report
Home
Poster
#1 - Development and validation
Poster
#2 - Validation with mixed format field investigation
polygraphs
Poster
#3 - Additional validation with LEPET and PCSOT screening
exams
The OSS-3
Report
Other
Materials
Here is a link to the 2008 publication that introduced the OSS-3 polygraph scoring algorithm.
Nelson Krapohl Handler 2008 OSS-3 development and comparisons to human experts
OSS-3
Procedural Flow Chart
One-page
flow-chart
Crossvalidation
sample
Screening
Samples
Alpha
Component
Weighting
Formulae
Component
Norms - bootstrap training (with plots)
z-test
plots - sensors
ROC
- components - standardized lognormal ratios
Cumulative
Normal Distributions for DI and NDI cases (with plots)
Grand
Mean and Senter Rules (training sample)
Bootstrapping
(brief)
Advanced
User Options
Training
Sample - results with and without Bonferonni correction
Mixed
Format - 2nd validation sample (mixed techniques)- with spot/MGQT
rules and Senter Rules
LEPET
Screening Sample - with spot/MGQT rules and Screening
Rules
LEPET
Screening Sample - results with and without Bonferonni correction
Habituation
between charts
Habituation
between RQs - 2nd
validation sample
(mixed techniques)
Flow Chart – Initial transformations
Flow Chart – OSS-3 transformations
Flow Chart – Separate CQs and RQs
Flow Chart – Weighted averaging
download (provided for information purposes only, without any warranty or support)