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
Lie detection the data. The study of physiological methods for deception tests measuring emotional disturbances began in the early 1900s. Vittorio Benussi was the first to work on practical deception tests based on physiological changes. He detected changes in inspiration-expiration ratio—findings confirmed by N.E. Burtt. Burtt conducted studies that emphasized the changes in quantitative systolic blood-pressure. William Moulton Marston studied blood-pressure and noted increase in systolic blood pressure of 10 mm Hg or over indicated guilt through using the tycos sphygmomanometer, with which he reported 90–100% accuracy. His studies used students and actual court cases. Then in 1913 W.M. Marston determined systolic