Development of Persian Reading Comprehension Test and determination of its psychometric properties.

This study aimed to develop a Persian Reading Comprehension Test (PRCT) and establish its psychometric properties in Persian-speaking students from fourth to sixth grades. 36 texts and 150 questions were created for the PRCT. The texts and questions were reviewed by 11 experts to ensure content validity. Then, the remaining texts and questions were tested on 5 students in Tehran schools to assess face validity. After this, the test's difficulty and discrimination indexes were determined on 30 students. Finally, 12 texts and 40 questions were selected for the test. PRCT was conducted on 295 students with normal reading skills and 16 students with suspected reading disorders (SRD) to evaluate psychometric properties. The results indicated a significant difference in scores of the PRCT across all three educational levels. There was a significant difference between students with normal reading skills and those with SRD (U = 61.5, p < .001, r = .373). The correlation between the total score of the PRCT and the text comprehension subtest of the NEMA was calculated (r = .424, p = .039). The test-retest reliability and Cronbach's alpha coefficient of the PRCT were 0.888 and 0.828, respectively. It appears that the PRCT is a standard test with suitable psychometric properties for evaluating reading comprehension.