Lasso of Truth Lasso of Truth The Lasso of Truth is a weapon wielded by DC Comics superheroine Wonder Woman, Princess Diana of Themyscira. It is also known as the Magic Lasso or the Lasso of Hestia. It was created by William Moulton Marston, inventor of the lie detector, as an allegory for feminine charm, but it later became more popular as a device to extract truth from people. The lariat forces anyone it captures into submission; compelling its captives to obey the wielder of the lasso and tell the truth. William Moulton Marston created Wonder Woman but he also worked, in the
Polygraph device's primary advocate, lobbying for its use in the courts. In 1938 he published a book, "The Lie Detector Test", wherein he documented the theory and use of the device. In 1938 he appeared in advertising by the Gillette company claiming that the polygraph showed Gillette razors were better than the competition. A device recording both blood pressure and breathing was invented in 1921 by John Augustus Larson of the University of California and first applied in law enforcement work by the Berkeley Police Department under its nationally renowned police chief August Vollmer. Further work on this device was done