Polygraph Glossary Scoring

Spearman Rank Correlation

Definition

The Spearman Rank Correlation tests correlation between ordinal-level data. In PDD, it can assess inter-rater reliability by comparing the rankings different evaluators assign to question responses.

What Is Spearman Rank Correlation?

The Spearman Rank Correlation tests correlation between ordinal-level data. In PDD, it can assess inter-rater reliability by comparing the rankings different evaluators assign to question responses.

Cross-references

More scoring terms in this glossary

spot responder A spot responder is an unproven concept suggesting some examinees respond physiologically to a question based on its ... Criterion Accuracy The percentage of correct polygraph decisions when measured against independently confirmed ground truth. Criterion a... type II error A Type II error is the probability of not rejecting a false null hypothesis — failing to detect deception when it is ... outlier An outlier is a value far beyond the normal range. In PDD data, outliers may be excluded because they disproportionat... Hit Rate The overall percentage of correct classifications (both true positives and true negatives) produced by a polygraph te... Cross-Validation A statistical method used to evaluate how well a polygraph scoring algorithm will generalise to independent data sets...

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