He reported success for his device in solving domestic problems-for example, he claimed a two young people engaged to others were revealed to be in love by the lie detector, and were able to realize their feelings and marry each other as a result.ĭuring this time, and for years after, Marston continued his own work as a psychologist, developing his DISC Theory. Marston also saw a future for the machine in the field of love as well as crime, and even saw the machine as a tool of psychotherapy, contending that it would disclose subconscious secrets of which the subject was unaware. In 1923, Marston unsuccessfully tried to have his machine admitted as evidence in courts of law. This was the first functional lie detector. He went on to invent the systolic blood pressure test, which used blood pressure cuffs and a stethoscope to take intermittent blood pressure during questioning, and ostensibly revealed changes when the subject was lying. While teaching at Tufts, Marston met Olive Byrne, a former grad student who became his research assistant in his work on the polygraph.Īfter Marston’s wife Elizabeth told him that when she became mad or excited, her blood pressure started to climb, Marston realized that there was a correlation between lying and blood pressure. Over the next ten years, Marston worked in academia, teaching at American University and Tufts University, and developed his version of the polygraph machine-which had been invented in 1921 by a student at the University of California, Berkeley. Raised in Massachusetts, Marston received his education from Harvard, earning a BA in 1915, an LLB in 1918, and a PhD in psychology in 1921. Though William Moulton Marston (– May 2, 1947) died fairly young, at only age 53, he collected an impressive, and incredibly varied, list of accomplishments: he was a lawyer, a psychologist, creator of the DISC system of personality classification, inventor of an early version of the lie detector machine, and creator of the comic character Wonder Woman.
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