(1929–1992) a professor of psychiatry from Duke University, to quantify a patient's level of anxiety.
[1][2] The SAS is a 20-item self-report assessment device built to measure anxiety levels, based on scoring in 4 groups of manifestations: cognitive, autonomic, motor and central nervous system symptoms.
Answering the statements a person should indicate how much each statement applies to him or her within a period of one or two weeks prior to taking the test.
Some questions are negatively worded to avoid the problem of set response.
The raw score then needs to be converted to an "Anxiety Index" score using the chart on the paper version of the test that can be found on the link below.