Why Are Cops Around the World Using This Outlandish Mind-Reading Tool? — ProPublica

The creator of Scientific Content Analysis, or SCAN, says the tool can identify deception. Law enforcement has used his method for decades, even though there’s no reliable science behind it. Even the CIA and FBI have bought in.

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"The tool’s lack of scientific grounding aside, criminal investigators have been quick to seize upon sales pitches for training, exemplified by a company commander with the famed Texas Rangers, who, in an email to his fellow majors, wrote that SCAN’s creator is “a true master at detecting deception.”

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The creator of Scientific Content Analysis, or SCAN, says the tool can identify deception. Law enforcement has used his method for decades, even though there’s no reliable science behind it. Even the CIA and FBI have bought in.

...

"The tool’s lack of scientific grounding aside, criminal investigators have been quick to seize upon sales pitches for training, exemplified by a company commander with the famed Texas Rangers, who, in an email to his fellow majors, wrote that SCAN’s creator is “a true master at detecting deception.”

...