An owl. Probably not the Duolingo one, but I'm sure they're friends. (Image from

Building linguistic muscle memory with Duolingo

I achieved not quite a lifelong dream this week. Let’s call it a months-long dream. I finally reached level 25 in German on Duolingo!

When the moment of glory came, it was more with a fizzle than with fireworks. As the XP points ticked over, the ‘points to next’ level disappeared, a simple XP counter in its place. I won’t pretend I wasn’t quite chuffed secretly, though.

But hang on! Can’t I already speak German? As my strongest foreign language, what was I doing thrashing through levels and levels of a beginner to intermediate course? Of course, besides the gamified pride of having that shiny 25 next to the language on my Duolingo profile.

Well, fluency is never a done deal. Even our strongest languages need maintenance work to keep them in shape. And what started as a curious exploration of Duolingo’s German course showed me how useful it can be to use lower-level learner drill tools to reinforce your skills as a fluent speaker. Convinced of the benefits, I’m now using it to blitz Norwegian, another of my more confident languages.

So why is Duolingo so useful?

A Duolingo leaderboard

A Duolingo leaderboard

Muscle memory

Muscle memory, or motor learning, is the process by which certain skills become automatic and unthinking through repetition. You know the kind of thing: playing scales on a piano, using a computer keyboard, operating the controls of a car. They are tasks that we perform so often that they just happen on some level below consciousness.

Proficient language use has a component of this, too. As we become more and more familiar with the patterns of a language, we form grammatically sound phrases ever more automatically. After years of learning French, German or Spanish, you no longer have to think about gendered articles, for example. At some point you just get it.

The key routes to achieving this language ‘muscle memory’ are exposure and repetition. And Duolingo exercises have that by the truckload. That green owl has prepared hundreds and hundreds of sentences, each selected as an example of idiomatic, grammatically correct usage.

Automating those little details

The upshot of this is that you can work on automating those annoying little details that always trip you up, even in your strong languages. For example,  learning phrases to express date and time are a pet hate of mine as a learner. When speaking quickly, I am still tempted to use the equivalent of the English preposition, which is often not the same in the target language.

Take Norwegian as an example. To express duration where English uses ‘for’, the language uses i (in), such as ‘i fem uker’ (for five weeks). Even after years of working on my Norwegian, it can be hard to stifle that anglophone twitch to use ‘for’ instead of ‘i’.

Cue Duolingo’s Time topic. After bashing out exercise after exercise containing solid Norwegian time phrases, they are starting to come more naturally now. Bad habits start to break down; the brain is getting trained.

It is not just the brain, either. After typing thousands of characters of target language, the fingers start to instinctively know how to form the special characters on the keyboard. No more clumsy fiddling for å, ø or any of their kin!

Duolingo and the lost details

Fluency is not the summit of a perfectly formed mountain. It is easy to sit proudly atop your language mastery and assume that you simply have it covered. Especially the basics.

Hold your horses! Duolingo surprised me by throwing up some shockers that I had forgotten over the years. The gender of Euro and Cent in German (both der, by the way). The correct word for employ or hire (einstellen, not anstellen as I’d been assuming for years). They’re little things, and they would barely impede comprehension. But those lost details make the difference between sounding like a learner and sounding like someone who has really got a grip on the language.

Duolingo has even being training the sloppiness out of my language habits. Learning Norwegian as a German speaker can be incredibly handy, since the languages are fairly close. However, assuming similarity can result in mistakes. Using Duolingo on both of them has thrown up some surprising discrepancies in the gender of cognates between the two languages. Just look at these:

🇳🇴 🇩🇪
cinema kinoen masculine das Kino neuter
keyboard tastaturet neuter die Tastatur feminine
library biblioteket neuter die Bibliothek feminine
mind sinnet neuter der Sinn masculine
sugar sukkeret neuter der Zucker masculine

Where I would previously assume the Norwegian gender was identical to the German, I now know better. Duolingo exercises gave me a systematic arena to find that out. Without it, it might have taken me an age to come across them by chance. No more blindly relying on German for my Norwegian details!

Need for speed…

Many of Duolingo’s activities are translation-based. And a key benefit of this for already proficient linguists is the development of lightning-speed gist translation.

Understanding gist, or the general essence, of a sentence quickly is a key skill for operating seamlessly in a foreign language. Life moves quickly, and we must often act swiftly to keep pace. By adding a timed element to these exercises in its random test feature, Duolingo encourages learners to understand quickly. And true enough, after some time using the platform, you will find yourself getting faster and faster on the keyboard.

Challenge yourself to a few random quizzes (via the dumbbell icon in the app). See how quickly you can translate via a glance at the native language prompt or single listen to the spoken phrase, and work on extending that gist brain. Dictation exercises are also excellent for training you ear to catch things quickly, especially in languages with elision, where words can seem to blur into one another.

Interestingly, translation drilling is a feature of the platform that may well be more useful to language maintainers than learners. Although mass sentence approaches can be incredibly useful for increasing your exposure, pure translation is probably not most efficient sole learning method. The threshold of conversational fluency might be just the right time to jump into Duolingo’s testing tool.

…but recognising road bumps

Travelling the same paths over and over again is a good opportunity to spot where there are potholes. And through regular muscle memory training on Duolingo, you soon find out what your own weaknesses are.

A major lesson for me relates to what psychologist Daniel Kahnemann has called fast and slow thinking. These relate to the two tracks of thought processing humans are hypothesised to have. The first is a snappy, gut-instinct decision making brain based on heuristics or patterns. Its complement is a more careful, deliberating one.

When you start speed translating for gist training, you may be tempted to jump the gun and answer too quickly at first. Perhaps a similar, but slightly different sentence appeared on the screen two minutes ago. Your fast-thinking, pattern-spotting brain might catch only the similar part, remember the answer to the previous sentence, and enter that instead of checking the whole thing. At first, this would happen frequently with me – oops.

With plenty of practice, though, you can train your brain to engage its more deliberated mode whilst still maintaining speed. In essence, it is a lesson in “don’t assume anything”, and a good counterbalance to the speed translation kick.

Learning is a journey, not an outcome

It is tempting to see learning as something with an endpoint. But a commitment to a language involves regular maintenance and audits, which can be hard to put into play if you live outside your target countries.

There may be a hint of polyglot snobbery around using beginner to intermediate tools like Duolingo. But the opportunity these offer for stocktaking and strengthening existing pathways is too good to miss. And sometimes, going back to basics can just be fun, especially when it is gamified!

Already have a strong language amongst the Duolingo courses? Join the XP chase, schedule a daily drill, and see what levelling up can do for you.

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