In a recent study, researchers randomly assigned 293 men and women (averaging just under 19 years of age) to either a bogus pipeline condition, in which they were hooked to a lie detector and reminded that the equipment would
detect their deceit before answering questions verbally, or to an anonymous questionnaire condition, in which they answered questions on a paper and pencil survey while hooked to the same machine.1 However, in the anonymous questionnaire condition, researchers told the participants that the purpose of the machine was to measure participants» anxiety prior to the filling out the survey (and were not told that it would flag false answers).