Reading in Another Language Is a Cognitive Workout (Even If It's Hard)
If reading in your second language feels harder — slower, more effortful, more tiring — that's not a sign you're bad at it. That's your brain doing extra reps.
Multilingual readers sometimes feel guilty about their reading speed, or wonder if it's "worth it" to slog through a novel in a language they don't think in. The research has a clear answer: yes. And the cognitive payoff is bigger than you'd expect.
Both Languages Are Always On
You might assume that when you're reading in English, your French is off duty. It's not.
Judith Kroll and colleagues have shown that both languages in a bilingual's mind are always active — even when you're only using one. When you read a word in English, your brain also activates its French equivalent (and vice versa), even if you're not aware of it.
This means your multilingual library isn't two separate collections. Cognitively, it's one interconnected system. Every book you read in any language activates the full linguistic network. Reading in your second language isn't a detour from your "real" reading — it's part of the same cognitive architecture.
The research: Kroll, J. F., Dussias, P. E., Bice, K., & Perrotti, L. (2015). Bilingualism, mind, and brain. Annual Review of Linguistics, 1, 377–394. doi.org/10.1146/annurev-linguist-030514-124937
Code-Switching Is Brain Training
Here's a finding that's not widely known outside linguistics — and it's genuinely cool.
Researchers at the University of Maryland studied what happens in the brain when bilingual readers encounter a language switch while reading — say, an English sentence with a Spanish word dropped in (a common thing in bilingual communities).
Processing that switch activated cognitive control systems — the executive function circuits responsible for focus, task-switching, and managing conflicting information. And here's the kicker: that activation immediately improved performance on a subsequent executive function task.
Code-switching while reading literally exercises the brain's control circuits in real time. It's not a sign of confusion or lazy language use. It's cognitive cross-training.
What happens when you read across languages
Reading in one language
Standard processing
- →Standard cognitive load
- →Language networks active
- →Baseline executive function
Reading across languages
Adler, Valdés Kroff & Novick, 2020
- →Cognitive control circuits activated
- →Executive function immediately boosted
- →Performance improves on subsequent tasks
The research: Adler, R. M., Valdés Kroff, J. R., & Novick, J. M. (2020). Does integrating a code-switch during comprehension engage cognitive control? Journal of Experimental Psychology: Learning, Memory, and Cognition, 46(4), 741–759. doi.org/10.1037/xlm0000755
The Lifelong Payoff
The cognitive benefits of bilingual reading aren't limited to a good study session. They compound over a lifetime.
Ellen Bialystok's research at York University has shown that lifelong bilingualism enhances executive control across the full lifespan — with the strongest effects in childhood and older adulthood. In older populations, bilingualism contributes to cognitive reserve, potentially delaying the onset of dementia symptoms.
Reading in two languages isn't just a literacy practice. It's a long-term investment in cognitive health.
The research: Bialystok, E., Craik, F.I.M., & Luk, G. (2012). Bilingualism: Consequences for mind and brain. Trends in Cognitive Sciences, 16(4), 240–250. doi.org/10.1016/j.tics.2012.03.001
“The struggle of reading in another language isn't a sign you're bad at it. It's your brain doing extra reps.”
Pick Up That Book in Your Second Language
Pick up that book in your second language. Even if you're slow. Even if you reach for your phone to translate every other page. Even if it takes you three weeks to finish something you'd read in a weekend in your first language.
Your brain is getting more from it than you think. The effort is the signal — the extra cognitive load means the workout is working.
And if you're managing books across multiple languages, Plumerie organizes by language and supports 28 of them — because a multilingual reading life shouldn't have to fight its own tools.