The stimulus test is now called the stim test. Its use dates at least from the 1930's and possibly earlier. The test was introduced to serve the psychological purpose of reducing fear among the truthful and stimulating the deceptive. Polygraph examiners have been debating the use of the stimulus test wince the 1940's. Those who favor its use have debated whether it should be given before or after the first relevant chart. They have also debated its purpose, benefits, and disadvantages and whether the examiner should be blind to the number chosen. The articles and documents published between the 1960's and 1990. They focus on the test's purpose, its presentation, accuracy, advantages, and disadvantages. Instructional manuals are also cited. Each document listing includes the author, title, date, and source