Leonarde Keeler (left) testing his polygraph machine on Marjorie Creighton in presence of August Vollmer during a trial in Chicago in 1932. Staff Writer In advance of her appearance on Thursday before ...

Add Yahoo as a preferred source to see more of our stories on Google. American inventor John Larson, right, demonstrates the operation of a polygraph at Northwestern University in Evanston, Illinois, ...

U.S. Air Force Staff Sgt. Jason Arnold, 407th Expeditionary Communications Squadron, acts as an examinee for an Office of Special Investigations polygraph examiner during Operation Iraqi Freedom at ...

Here’s a video of Marston using a polygraph-like machine and claiming to identify the varying emotions of blonde, brunette and redheaded women. His conclusion was that redheads like to gamble, ...