Lasso of Truth period before, during and after World War I, on understanding and perfecting the systolic blood-pressure test while working on his Ph.D. in psychology at Harvard University. Blood pressure was one of several elements measured in the polygraph tests that were being perfected since as far back as Italian criminologist Cesare Lombroso, in 1895. Marston's wife, psychologist and lawyer Elizabeth Holloway Marston, one of his inspirations for the Wonder Woman character, also played a key role in his lie detector research. But the lie detector had nothing to do with Marston's creation of the Magic Lasso. Wonder Woman's "Magic Lasso" or
William Moulton Marston Marston had written many articles and books on various psychological topics, but his last six years of writing were devoted to his comics creation. William Moulton Marston died of cancer on May 2, 1947, in Rye, New York, seven days shy of his 54th birthday. After his death, Elizabeth and Olive continued to live together until Olive's death in 1985, aged 81; Elizabeth died in 1993, aged 100. In 1985, Marston was posthumously named as one of the honorees by DC Comics in the company's 50th anniversary publication "Fifty Who Made DC Great". William Moulton Marston's philosophy of diametric opposites