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
Professor Marston and the Wonder Women praised Robinson's direction and the performances of its stars. The story is told in flashbacks set during a 1945 testimony that William Moulton Marston gives to representatives of the Child Study Association of America. In the year 1928, William and his wife Elizabeth teach and work on their research at the associated Harvard and Radcliffe Colleges. One day, William hires one of his students, Olive Byrne (daughter of Ethel Byrne and niece of Margaret Sanger – two famous suffragists and feminists of the 20th century) as a research assistant. Olive aids in the Marstons' work in inventing the lie detector