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Detecting Deception: Does the Truth Come Out in Writing?

Another major research study that once again tests the accuracy of using written statements to identify deception.  It appears from the research conclusions that “Reality Monitoring” type of interview methods (such as those we teach in Practical Kinesic Interview & Interrogation® – Information Recovery Technique) are far more accurate than using written statements.

Take a look at the abstract and the conclusions:

Does the Truth Come Out in the Writing? SCAN as a Lie Detection Tool

Law and Human Behavior
January 2011 First Published On-Line

by Galit Nahari, Aldert Vrij and Ronald P. Fisher


We tested the accuracy of Scientific Content Analysis (SCAN), a verbal lie detection tool that is used world-wide by federal law enforcement and military agencies. Sixty-one participants were requested to write down the truth, an outright lie or a concealment lie about activities they had just completed. The statements were coded with SCAN and with another verbal lie detection tool, Reality Monitoring (RM). RM discriminated significantly between truth tellers and outright liars and between truth tellers and concealment liars, whereas SCAN did not discriminate between truth tellers and either kind of liar. Implications of the findings for the suitability of SCAN as a lie detection tool are discussed.

Stan B. Walters, CSP “The Lie Guy®”

Practical Kinesic Interview & Interrogation®”

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