Polygraph Glossary Practice

post hoc

Definition

Post hoc (Latin: \"after this\") refers to criteria or analyses established after an experiment is completed. Post hoc analyses carry less weight than a priori decisions because they may be influenced by knowledge of the results. See: a posteriori.

What Does Post Hoc Mean?

Post hoc (Latin: "after this") refers to criteria or analyses established after an experiment is completed. Post hoc analyses carry less weight than a priori decisions because they may be influenced by knowledge of the results. See: a posteriori.

Significance in PDD

This concept is part of the theoretical and practical framework supporting psychophysiological detection of deception. Understanding it helps practitioners, researchers, and informed consumers appreciate the scientific foundations of modern polygraph testing and the ongoing refinement of techniques and methods based on empirical research.

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 practice terms in this glossary

control question Control question is a superseded term now replaced by Comparison Question. The name \"control\" traced back to the 19... halo effect The halo effect is the tendency of an observer to be unduly influenced by a single trait of an individual. For PDD ex... random selection Random selection is a method of extracting research samples from a population so each individual has an equal chance ... experimental group The experimental group receives the treatment or manipulation of interest in a research study. In PDD research, the g... Informed Consent A mandatory pre-test requirement where the examinee acknowledges in writing that they understand the polygraph proces... empirical Empirical describes an approach based entirely on observation and data rather than speculation or theory. Much of PDD...

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