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Paper Information

Journal:   MEDICAL JOURNAL OF THE ISLAMIC REPUBLIC OF IRAN (MJIRI)   2017 , Volume 31 , Number 1; Page(s) 0 To 0.
 
Paper: 

The paced auditory serial addition test for working memory assessment: Psychometric properties

 
DOI: 

10.14196/mjiri.31.61

 
Author(s):  NIKRAVESH MARYAM, JAFARI ZAHRA*, MEHRPOUR MASOUD, KAZEMI ROOZBEH, AMIRI SHAVAKI YOUNES, Hossienifar Shamim, Azizi Mohamad Parsa
 
* Department of Basic Sciences in Rehabilitation, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran
 
Abstract: 
Background: The paced auditory serial addition test (PASAT) was primarily developed to assess the effects of traumatic brain injury on cognitive functioning. Working memory (WM) is one of the most important aspects of cognitive function, and WM impairment is one of the clinically remarkable signs of aphasia. To develop the Persian version of PASAT, an initial version was used in individuals with aphasia (IWA). Methods: In this study, 25 individuals with aphasia (29-60 years) and 85 controls (18-60 years) were included. PASAT was presented in the form of recorded 61 single-digit numbers (1 to 9). The participants repeatedly added the 2 recent digits. The psychometric properties of PASAT including convergent validity (using the digit memory span tasks), divergent validity (using results in the control group and IWA group), and face validity were investigated. Test-retest reliability was considered as well. Results: The relationship between the PASAT and digit memory span tests was moderate to strong in the control group (forward digit memory span test: r= 0. 52, p< 0. 0001; backward digit memory span test: r = 0. 48, p< 0. 0001). A strong relationship was found in IWA (forward digit memory span test: r= 0. 72, p< 0. 0001; backward digit memory span test: r= 0. 53, p= 0. 006). Also, strong testretest reliability (intraclass correlation= 0. 95, p< 0. 0001) was observed. Conclusion: According to our results, the PASAT is a valid and reliable test to assess working memory, particularly in IWA. It could be used as a feasible tool for clinical and research applications.
 
Keyword(s): Paced Auditory Serial Addition Test,Aphasia,Working Memory,Validity,Reliability
 
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