Doug Williams (polygraph critic)

Douglas Gene Williams (October 6, 1945 – March 19, 2021 ) was an American critic of polygraph tests. Williams administered polygraph tests for US law enforcement and private companies but came to consider the tests unreliable and harmful. He subsequently quit and spent decades publicly condemning polygraph tests and commercially teaching techniques purported to affect test results.

Williams' activism included appearing on 60 Minutes and testifying before a US Congressional subcommittee. His teaching business led him to be the target of a federal sting operation in 2012 and 2013, in which agents announced intentions to use his methods to lie in polygraph tests to conceal crimes and maintain government employment. Williams provided instruction to the agents, and in 2015, he was convicted on multiple counts of mail fraud and witness tampering and sentenced to two years in prison.

According to AntiPolygraph.org, Williams resumed publicly providing polygraph-taking instruction after his supervised release ended in 2020. He died in 2021 following an illness and was cremated.