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Language testing is not limited to assessing the performance of ordinary learners. It is also needed in other field such as assessing the ability of children with disabilities, those who have language disorders. Although a great deal of research has been carried out in the realm of stuttering, researchers still do not know why some children stutter, or why most children become fluent speakers while others become adult stutterers. Studies show that Stuttering students have many difficulties indoi:10.1186/2229-0443-1-2-7 fatcat:b77xyhtrsnhnbh72agvfiqzwly