When I returned to the US with my nearly 9-year-old son, my worst fears were confirmed: at 3rd grade, he was fluent in Chinese, but couldn’t read English. How was he going to become a reader when he was so far behind?
All of his friends were reading more challenging books like Harry Potter and he wasn’t about to carry around a “Spot the Dog” story.
So, I started with more advanced stories—which were cool and interesting—and paired each with a companion audio book CD as a learning scaffold. It was hard at first, but with persistence and a lot of popcorn to start us off, he slowly began to read on his own. A year later, he had almost caught up.
Now I know why it worked!
A growing body of research is showing that combining high-quality audio with synchronized word-by-word highlighting meaningfully boosts early reading outcomes—especially for emerging readers and multilingual learners.
Research conclusions across dozens of digital storybook interventions repeatedly show that e-stories with coherent audio narration + synchronized text cues support children’s story comprehension and vocabulary development more effectively than print alone or unsupported digital text (Takacs, Swart & Bus, 2015; Bus, Takacs & Kegel, 2015).
In other classroom studies validated the same conclusion: students who used spoken text aligned to on-screen word tracking made significant gains in reading comprehension and vocabulary compared to peers in business-as-usual classrooms (Mostow & Aist, 2001; Aist et al., 2007).
Randomized controlled trials—the “gold standard” in research—consistently found that integrated narration, highlighting, and interactive print supports, resulted in improvements in decoding, fluency, and comprehension among Grade-1 students. These gains were significantly higher than comparison classrooms receiving traditional instruction (Comaskey, Savage & Abrami, 2009; Savage et al., 2013).
Of special interest to me was that the audio support is particularly effective for English Language Learners (ELLs) and other students developing foundational literacy skills. Research on “listening-while-reading” routines shows that synchronized text helps multilingual learners link phonology and print, reduces cognitive load, and supports prosody and word recognition (Taguchi et al., 2004; Wood et al., 2018).
This research validates one of the key pillars of StoryWorld’s overall approach to language and literacy development, and underscores how we continue to put research directly into practice. Every StoryWorld story features word-by-word tracking aligned to fluent audio, giving students research-based support in the exact moment they need it. Students can also click any word to hear it in isolation—reinforcing pronunciation, decoding, and language comprehension.
For multilingual learners, StoryWorld’s ability to toggle between languages, further supports vocabulary development, oral language, comprehension, and “translanguaging.” This aligns with the research that demonstrates that well-designed audio-supported read-along environments meaningfully strengthen early literacy.
Everything that seemed to work naturally as my son slowly became a reader is now validated by research: when children hear a fluent model while seeing each word highlighted, they build mental mappings that accelerate reading accuracy and confidence.
Our goal is to share that success with others!
In my next blog, I’ll dive a little deeper and explain why all this works so well.
Cynthia Harrison Barbera
Cynthia Harrison Barbera is President and CEO, StoryWorld International. She served as VP Educational Technology for Scholastic and is the recipient of two US Presidential awards for educational programs. An Emmy-award winner for a television series on education, she has taught English to native-speakers and ELL students in the US and overseas.