Polygraph Glossary Scoring

relief tracing

Definition

A relief tracing is the section of a physiological recording where recovery from arousal is apparent — the return toward baseline after a response.

What Is a Relief Tracing?

A relief tracing is the section of a physiological recording where recovery from arousal is apparent — the return toward baseline after a response.

Historical and Modern Context

The evolution of polygraph instrumentation — from early mechanical devices to modern digital systems — reflects the broader advancement of the field from subjective interpretation to validated, structured test data analysis. Modern instruments from manufacturers such as Lafayette, Limestone, and Stoelting incorporate multiple measurement channels, digital recording, and computerised scoring capabilities.

Professional Context

This concept forms part of the knowledge base expected of qualified forensic psychophysiologists. Training at APA-accredited schools covers the theoretical foundations, practical applications, and research evidence underlying all aspects of polygraph methodology. Ongoing continuing education ensures practitioners stay current with developments in the field.

For comprehensive information on polygraph terminology and methodology, explore the complete polygraph glossary or visit the Polygraph Examiner Hub.

Cross-references

More scoring terms in this glossary

Feature Extraction The process of identifying and measuring specific physiological response characteristics from raw polygraph data for ... Cross-Validation A statistical method used to evaluate how well a polygraph scoring algorithm will generalise to independent data sets... response onset window The response onset window is the time period after question onset during which physiological responses are considered... Numerical Scoring A structured method of evaluating polygraph charts by assigning numerical values to physiological responses at each r... Two-Stage Decision Rules A decision framework in the Empirical Scoring System (ESS) that uses two sequential rules: Stage 1 applies the Grand ... event marker Event markers are annotations placed on the polygraph chart to alert reviewers of significant events: question onset ...

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