Digital Stories improve English?

Verdugo,D.R & Belmonte,I.A.(2007).Using digital stories to improve listening comphrehension with Spanish young learners of English. http://llt.msu.edu/vol11num1/ramirez/default.html
According to this article, there are two groups in the project one is the control and others is the experimental group. Eventually, the experimental group improves their listening comprehension skills than the control group cause digital stories promote concentration and focus children’s attention on the oral input received.As my opinion, digital stories may help student improving listening ability and oral input but the instructor needs to know how to design the lesson according to the student level. If your lesson is for EFL students, you have to create it easier than ESL students. If you put the difficult vocabularies and phrases in your digital story, sometimes EFL students may misunderstand the content. The instructor needs to include higher quality sound and slower story-telling pace.I think that before the class the instructor has to give per studying to the lrarners. After listening the story, they improve listening ability and getting the new vocabularies at the same time. It is suitable at elementary school. I definitely agree with this article, tales and stories are effective listening materials for children to develop listening comprehension and literacy both in their first and foreign language (Dickinson 2001. . .)