Cohen, Laurie P.; The Polygraph Paradox; The Wall Street Journal, Mar 22 2008
Article about the use of polygraphy, a method to detect lies during a questioning. Polygraphy has a low reliability, yet it is frequently used, especially by parole officers - and not always by licensed operators. This may lead to incorrect imprisonment of people.
Some of the questioned people say that the polygraph does not correctly measure their acts, but still correctly measures their conscience. Some have said that the prospect of a polygraph test has prevented them from committing crimes or infringing their parole conditions.