By Matt Stroud | Bloomberg | February 2, 2015
This article features interview with CLBB Co-Director Judith Edersheim, JD, MD. Dr. Edersheim’s 2014 paper, “A Polygraph Primer: What Litigators Need to Know,” written with Ekaterina Pivovarova, Justin Baker and Bruce Price, about the accuracy of the polygraph test, is cited.
By the beginning of February 1935, defense and prosecution attorneys in the criminal trial of Tony Grignano and Cecil Loniello were at a crossroads. The two men stood accused of attempting to kill a sheriff in Portage, Wis., and all of the evidence was circumstantial—the word of the sheriff against the word of the defendants. But Judge Clayton F. Van Pelt thought he could change that.
The judge had heard about the work of the Scientific Crime Detection Laboratory at Northwestern University’s School of Law, where Professor Leonarde Keeler had spent more than a decade tinkering with a portable device to measure the responses of skin and blood pressure during questioning. In the hands of a trained expert, Keeler said, the device could help identify whether someone was telling the truth. While the Keeler Polygraph had been a showpiece at the 1933 Chicago World’s Fair, it had never been used in a criminal trial. On Feb. 2, 1935—exactly 80 years ago—Keeler used his polygraph test and determined that Grignano and Loniello were likely lying. The professor and his machine ended up persuading the jury. Continue reading »