en Occupational Therapy Occupational Therapy Original Research Original Research <p>&nbsp;<strong> Background: </strong>Visualattention is known as acritical base for learning.Thepurpose of the present study was to design, develop and evaluate the test-retest and internal consistency reliability as well as face, content and convergent validity of thecomputer- based selective visual attention test (SeVAT) for healthy first-grade school children.</p> <p>&nbsp;<strong> Methods </strong>:In thefirst phase of this study,the computer-based SeVATwas developedin two versionsof original and parallel.Ten experts in occupational therapy helpedto measure the content validity using the CVR and CVI methods.Face validity was measured through opinions collected from 10 first-grade children. The convergent validity of the test was examined using the Spearman correlation between the SeVAT and Stroop test. In addition, test-retest reliability was determined by measuring the intra-class correlation (ICC) between the original and parallel versions of theSeVAT in a single session. The internal consistency was calculated by Cronbach&#39;s alpha coefficients. Sixty first grade children (30 girls/30boys) participated in this study.</p> <p>&nbsp;<strong> Results </strong>: The developed test was found to have good content and face validity. The SeVAT showed an excellent test-retest reliability (ICC= 0.778, p<0.001) and internal consistency (Cronbach&#39;s Alpha of original and parallel tests were 0.857 and 0.831, respectively). SeVAT and Stroop test demonstrated a positive correlation upon the convergent validity testing.</p> <p>&nbsp;<strong> Conclusion </strong>: Our results suggested an acceptable reliability and validity for the computer-based SeVAT in the assessment of selective attention in children. Further research may warrant the differential validity of such a test in other age groups and neuro-cognitively disordered populations.</p> Children, Computer-based, Test, Reliability, Validity, Attention. 199 209 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-801&slc_lang=en&sid=1 Farzaneh Yazdani Farzane.yazdani@yahoo.com 200319475328460024447 200319475328460024447 No Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran. Malahat Akbarfahimi Akbarfahimi.m@iums.ac.ir 200319475328460024448 200319475328460024448 Yes Department of Occupational Therapy, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran. Afsoon Hassani Mehraban mehraban.a@iums.ac.ir 200319475328460024449 200319475328460024449 No Department of Occupational Therapy, Rehabilitation Research Center, School of Rehabilitation Sciences, Iran University of Medical Sciences, Tehran, Iran. Shohreh Jalaei jalaiesh@hotmail.com 200319475328460024450 200319475328460024450 No Department of Physical Therapy, Tehran University of Medical Sciences, Tehran, Iran. Mohammad Torabi-nami torabinami@sums.ac.ir 200319475328460024451 200319475328460024451 No Department of Neuroscience, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran.