Kylie Flynn, Bryan Matlen, Sara Atienza, and Steven Schneider. How Listening Drives Improvement in Vocabulary and Reading Comprehension: A Study of Promise Using Tales2Go (March 2016). San Francisco: WestEd.
WestEd, an educational research nonprofit, conducted this study on the use of audio books in a San Francisco Bay area school district. Students using Tales2go audio books attained 58% of the annual expected gain in reading achievement in just ten weeks, putting them three months ahead of control students. The increase in annual gain corresponds to a 33% improvement in the rate of learning for the period. The study evaluated the effect of just listening (i.e., no paired text). The treatment group outperformed the control group across all measures, by 3.0x in reading comprehension, nearly 7.0x in 2nd grade vocabulary, and nearly 4.0x in reading motivation. Greater impact on reading achievement is possible if Tales2go is used on a regular basis, both in a classroom literacy rotation and at home.