Shadowing means listening to a recording and repeating it aloud almost at the same moment, a fraction of a second behind the speaker. Borrowed from interpreter training, it is best supported for hearing the sounds of a language, especially for lower-level learners, and for speaking more fluently and clearly. Evidence on accent is mixed. You need audio to do it.
What is shadowing, and where did it come from?
In shadowing you echo a speaker while they are still talking, rather than waiting for a pause. Yo Hamada traces it to training for simultaneous interpreters. It reached English teaching in Japan in the 1990s through the work of Tamai, and spread widely after books by Kadota and Tamai in 2004 and Kadota in 2007.
The difference from ordinary listen-and-repeat matters. When you repeat after a pause, Hamada explains, your mind is busy with what the words mean. When you shadow, almost all of your attention goes on perceiving the sounds as they arrive. That is why he describes shadowing first as a listening exercise for the sounds of speech, and warns that it is often optimistically mistaken for a speaking activity.
Kadota's 2019 book presents it as a well-examined method for developing listening comprehension that may also strengthen the inner rehearsal you use to hold new words in memory. Teachers have since built many variants, including content shadowing, where you attend to meaning while you echo, and prosody shadowing, where you copy rhythm and intonation.
What does shadowing actually improve?
| Study | Who and how long | What changed |
|---|---|---|
| Hamada (2016) | 43 Japanese university learners of English, nine lessons | Perception of sounds, measured by dictation, improved for low and intermediate learners alike; only the lower-level group improved on standard listening questions |
| Foote & McDonough (2017) | 16 learners of English, at least 10 minutes four times a week for eight weeks, using recorded dialogues on iPods | Better comprehensibility and fluency; no significant change in accent |
| Whitworth & Rose (2025) | Systematic review of 44 studies | Shadowing can improve comprehensibility, intelligibility, accent, fluency and prosody; results for individual sounds were inconclusive |
The review also flags weaknesses in the research: most studies measured performance on controlled speaking tasks rather than free conversation, and acoustic measurements were not always linked to how real listeners judged the speech. Foote and McDonough's study was small and had no control group. We found no meta-analysis that pools effect sizes for shadowing, so treat it as a promising technique rather than a proven one.
Two patterns are consistent. Shadowing seems to help lower-level learners' listening most, and it improves how easy you are to understand more reliably than it changes your accent.
How do you practise shadowing?
Hamada's guidance for teachers translates well to learning on your own:
- Know the content first. Shadow a recording you have already understood, or one that is easy for you. If the meaning is new, you can't concentrate on the sounds.
- Start quietly. Mumble along once or twice without the text, just catching the sounds.
- Check the script briefly. Look at the parts you could not follow, then put the text away again. Shadowing while reading splits your attention between sounds and letters.
- Repeat about five times. Hamada cites research suggesting improvement levels off after roughly five rounds with the same recording.
- Then move on. A new recording at a similar level does more than a sixth pass at the old one.
Keep chunks short at first. Echoing a whole paragraph is hard; a sentence or a line of dialogue is manageable. Foote and McDonough's learners practised for as little as ten minutes at a time.
Can you shadow with a reading app?
Not on its own. Contos has no audio or narration: it is a reading app, with chapters written for your level, tap-to-translate and flashcards. For shadowing you need recordings from elsewhere, such as podcasts for learners that publish transcripts, audiobooks, or video at your level.
Reading does cover Hamada's first step, understanding the content before you shadow it. Read a few chapters at your level so the vocabulary and sentence patterns are familiar, then find audio pitched at a similar level. The shape of beginner text also suits short-chunk shadowing: in the free chapters of the Contos library (October 2026), most sentences at A1 and A2 are eight words or fewer.
| Level | Spanish | French | German | Italian | Portuguese |
|---|---|---|---|---|---|
| A1 | 84% | 89% | 89% | 86% | 89% |
| A2 | 71% | 74% | 75% | 67% | 64% |
| B1 | 39% | 42% | 46% | 36% | 38% |
| B2 | 40% | 44% | 47% | 37% | 41% |
Lines of dialogue are the closest thing in a chapter to the speech you will shadow:
"No es nada, cariño. Es el viento", dice.
If you want to practise speaking from text without a recording, our page on reading out loud covers what that does and doesn't achieve. And for how reading and listening divide the work, see reading or listening first.
Read a free chapter at your level today, then shadow five minutes of a podcast at the same level.
Read free in your browserFrequently asked questions
Does Contos have audio I can shadow?
No. Contos is a reading app with no audio or narration. Use it to understand material at your level, and use podcasts, audiobooks or video with transcripts for shadowing.
How is shadowing different from listen and repeat?
In listen and repeat you wait for a pause, so your attention goes to the meaning. In shadowing you echo the speaker almost simultaneously, so it goes mostly to perceiving the sounds as they arrive. Hamada describes shadowing mainly as listening practice for that reason.
Should I read the transcript while shadowing?
Not while you shadow. Hamada advises shadowing without the script, because reading divides your attention between sounds and letters. Check the transcript between rounds for the parts you missed, then put it away.
Will shadowing fix my accent?
Maybe a little, but don't count on it. In Foote and McDonough's study, learners became more fluent and easier to understand while their accent ratings did not change significantly. A 2025 review found some improvement in accent across studies but inconclusive results for individual sounds.
Is shadowing good for beginners?
It can be, with easy material. In Hamada's 2016 study, only the lower-level learners improved on standard listening questions. Choose short, slow recordings whose content you already know, and keep sessions brief.