PASAT form

PACED AUDITORY SERIAL ADDITION TEST

DESCRIPTION

The Paced Auditory Serial Addition Test (PASAT) is a measure of cognitive function that specifically assesses auditory information processing speed and flexibility, as well as calculation ability. It was initially developed by Gronwall in 1977 (1) to monitor the recovery of patients who had sustained mild head injuries. Stimulus presentation rates were adapted for use with multiple sclerosis (MS) patients by Rao and colleagues in 1989 (2), and the measure has been widely used in MS studies during the last decade. More recently, the PASAT has been included as one of three measures in the Multiple Sclerosis Functional Composite (MSFC) (3-5). The MSFC is recommended as an outcome measure in MS-related clinical trials. The PASAT is presented on compact disk (CD) to control the rate of stimulus presentation. Single digits are presented either every 3 seconds (trial 1) or every 2 seconds (trial 2), and the patient must add each new digit to the one immediately prior to it. The test score is the total number of correct sums given (out of 60 possible) in each trial. To minimize familiarity with stimulus items in clinical trials and other serial studies, two alternate forms have been developed; the order of these should be counterbalanced across testing sessions. The PASAT test stimuli have been translated into 27 languages. Please note that the instructions and scoring manual are only in English.

BIBLIOGRAPHY

MATERIALS NEEDED

A CD player and CD with PASAT stimuli, clipboard, and PASAT Record Forms to administer the test.

TEST INSTRUCTIONS

Test administration and scoring instructions for the PASAT and the MSFC may be downloaded by clicking on the items below. Files are in Adobe Acrobat portable document file (pdf) format (to read these files, you will need to download and install Acrobat Reader, http://www.adobe.com/products/acrobat/readstep.html)

PASAT Manual

MSFC Manual

ORDER INSTRUCTIONS

To order the PASAT, please complete the form below. Compact disks are $25 USD each. You will be contacted with a quotation and payment instructions by email.

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