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What is the role of interaction in language learning?

Evidence-based answer · Last updated · How it’s made

The short answer

Interaction — actually talking, negotiating meaning, and getting feedback with other people — is one of the most well-established drivers of second-language learning, not just a nice add-on to studying. Decades of research and multiple meta-analyses show that learners who engage in interactive tasks (with teachers, native speakers, or peers) make measurably larger gains than those who only receive input passively, largely because interaction forces learners to notice gaps in their own language, get corrected in real time, and adjust their output accordingly.

Answered for language learning in general. No specific language was set for this question, so the findings are drawn from general second-language research rather than one language’s literature.

Interaction has a large, well-replicated effect on learning

Multiple meta-analyses combining dozens of studies found that learners who took part in interactive, negotiated conversation showed significantly larger gains than learners who did not, with the advantage often even clearer on tests given weeks later than on tests given right after the interaction.1,2

In plain terms

A 'meta-analysis' is a study that statistically combines results from many separate studies to see how strong and consistent an effect really is, rather than relying on just one experiment.

The core mechanism: negotiating meaning when communication breaks down

A central idea behind why interaction helps is 'negotiation of meaning' — when a conversation partner doesn't understand something, the two people work together to fix the confusion (asking for clarification, repeating things differently, checking understanding), and this back-and-forth exposes the learner to corrected, more understandable versions of the language exactly when they need it.1,2,3,9,15

In plain terms

'Negotiation of meaning' refers to the moves people make in conversation to repair a misunderstanding, like asking 'what do you mean?' or rephrasing a sentence until it's clear.

Example

For instance, if a learner says 'This city beautiful' and their conversation partner responds 'This city IS beautiful?', the learner notices the missing word and can correct it on the spot, which research suggests helps it stick better than simply being told the rule.

Output matters too, not just listening

Producing language during interaction — being pushed to speak or write, not just to listen — helps learners notice gaps in their own knowledge and refine how they express themselves, which is thought to build both confidence and grammatical accuracy over time.9,10,12

Corrective feedback works, but its effectiveness depends on type and context

Feedback learners get during interaction (such as a partner subtly rephrasing an error, called a 'recast', versus explicitly explaining the rule) does help, but studies disagree on which type works best, and the answer seems to depend on the learner's proficiency level and how difficult or noticeable the grammar point is.3,6

In plain terms

A 'recast' is when a conversation partner repeats back what the learner said but in the corrected form, without explicitly saying 'that was wrong' — it's an indirect kind of correction.

Example

In one classroom study, lower-proficiency learners benefited more from being explicitly prompted to self-correct than from recasts, while higher-proficiency learners did about equally well with either.

Who you interact with changes what you get out of it

Different conversation partners provide different benefits: interacting with a host family member or native-speaker peer tends to bring more corrective feedback and more negotiation of meaning, while talking with a fellow non-native learner tends to produce more actual speaking time and output from the learner.4,8

Peer interaction helps, but only when done well

Interacting with fellow learners (peer interaction) is common in classrooms and can genuinely support learning by giving people chances to produce language, receive feedback, and think together about problems — but simply pairing learners up does not automatically guarantee learning; how the task is structured and how learners approach the interaction matters a lot.7,12,13,14,16

A learner's mindset shapes how much they benefit

How learners personally feel about interacting — whether they see peer conversations as valuable learning opportunities or as pointless or uncomfortable — affects how they behave during interaction, which in turn affects how much they actually learn from it.5,7

Weaker and stronger learners can both gain from mixed-level pairing

When learners of different proficiency levels are paired together, both can benefit: one study found the biggest improvements in accuracy occurred specifically in the pairing of a higher- and a lower-level learner, more so than same-level pairings.8,11

Interaction works through text and voice chat too, though differently than face-to-face

Interaction-driven learning isn't limited to in-person conversation; online text chat, voice chat, and even collaborative video games produce similar negotiation-of-meaning and feedback moves, though the type and frequency of these moves can differ from face-to-face talk (for example, typing delays or turn-taking differences can change how corrections happen).15,16,17,18,19,20

What to do with this

  • Seek out regular opportunities for real, meaningful back-and-forth communication in your target language rather than relying only on passive listening or solo study — this is one of the most consistently supported drivers of progress across decades of research.
  • Don't avoid conversations just because they're imperfect: being pushed to speak, make mistakes, and get corrected in the moment (through a partner naturally rephrasing your sentence, asking for clarification, or checking they understood you) is part of what makes interaction effective.
  • Mix up who you talk to: native speakers and more advanced peers tend to give more correction and force more negotiation of meaning, while talking with fellow learners at your own level can give you more raw speaking practice and lower anxiety.
  • If you use language exchange or online chat partners, know that text and voice chat both support learning, though the pacing and feedback will feel a bit different than face-to-face talk.
  • Finally, approach peer conversations with the mindset that they're genuine learning opportunities, not just filler — learners who value peer interaction tend to engage with it more actively and get more out of it.

Now pick something to do it with

Each of these opens an overview of the apps, courses and immersion material worth a look for that — filtered to exactly what the advice above points you at:

Conversation practiceLanguage exchangeGroup lessonsPrivate tutoring
Or see the full resource list

Worth knowing

  • Much of this evidence comes from classroom or lab studies of English and a handful of other languages (Spanish, French, Japanese), so it may not generalize perfectly to every language pair or setting.
  • Findings on which type of corrective feedback works best are genuinely mixed across studies rather than settled, and appear to depend on factors like the learner's proficiency and how noticeable the grammar point is.
  • Several sources are about peer interaction specifically and caution that simply putting learners together does not guarantee learning — the design of the task and learners' attitudes matter.
  • Some sources are older (dating back to the 1990s and 2000s) though more recent studies included here largely confirm similar patterns.

Want a deeper literature dive?

There’s enough published research here to go wider than the usual pass. Available on the Pro plan.

See plans

  1. [1]Shawn Loewen, Masatoshi Sato. Interaction and instructed second language acquisition. Language Teaching 2018. doi.org/10.1017/s0261444818000125
  2. [2]Alison Mackey. INPUT, INTERACTION, AND SECOND LANGUAGE DEVELOPMENT. Studies in Second Language Acquisition 1999. doi.org/10.1017/s0272263199004027
  3. [3]Nina Spada, Patsy M. Lightbown. INTERACTION RESEARCH IN SECOND/FOREIGN LANGUAGE CLASSROOMS. 2009. doi.org/10.4324/9780203880852-11
  4. [4]Tripp Strawbridge. Conversations abroad: The effect of interlocutor type, relationship quality, and L2 proficiency on interaction in naturalistic settings. The Modern Language Journal 2025. doi.org/10.1111/modl.12997
  5. [5]Masatoshi Sato. Interaction Mindsets, Interactional Behaviors, and L2 Development: An Affective‐Social‐Cognitive Model. Language Learning 2016. doi.org/10.1111/lang.12214
  6. [6]Jaemyung Goo, Alison Mackey. THE CASE AGAINST THE CASE AGAINST RECASTS. Studies in Second Language Acquisition 2013. doi.org/10.1017/s0272263112000708
  7. [7]Masatoshi Sato, Susan Ballinger. Raising language awareness in peer interaction: a cross-context, cross-methodology examination. Language Awareness 2012. doi.org/10.1080/09658416.2011.639884
  8. [8]Satomi Kawaguchi, Yuan Ma. Corrective Feedback, Negotiation of Meaning and Grammar Development: Learner-Learner and Learner-Native Speaker Interaction in ESL. Open Journal of Modern Linguistics 2012. doi.org/10.4236/OJML.2012.22008
  9. [9]Winda Ayu Utami Rhamadanty. FROM INPUT TO OUTPUT: THE IMPACT OF INTERACTION IN ENGLISH AS A SECOND LANGUAGE ACQUISITION IN A MANDARIN-SPEAKING ENVIRONMENT. THE ACADEMIC: ENGLISH LANGUAGE LEARNING JOURNAL 2024. doi.org/10.52208/aellj.v9i2.1258
  10. [10]Susan M. Gass, Jennifer Behney, Luke Plonsky, Susan M. Gass, Larry Selinker. Second Language Acquisition. 2001. doi.org/10.4324/9781410604651
  11. [11]Amy Snyder Ohta. Applying Sociocultural Theory to an Analysis of Learner Discourse: Learner-Learner Collaborative Interaction in the Zone of Proximal Development. Issues in Applied Linguistics 1995. doi.org/10.5070/l462005219
  12. [12]Kang, Katherine I.. Peer Interaction: A Compromise or a Necessity?. Working Papers in TESOL & Applied Linguistics 2015. https://eric.ed.gov/?id=EJ1176850
  13. [13]Katherine I. Kang. Peer Interaction: A Compromise or a Necessity?. Studies in Applied Linguistics & TESOL 2015. doi.org/10.7916/salt.v15i2.1286
  14. [14]Katherine I. Kang. Peer Interaction: A Compromise or a Necessity?. Working Papers in Applied Linguistics and TESOL 2015. doi.org/10.7916/D8B57WP7
  15. [15]Kevin K. Jepson. Conversations—and negotiated interaction—in text and voice chat rooms. Language learning & technology 2005. doi.org/10.64152/10125/44033
  16. [16]Maria Diez-Ortega. Collaborative Gaming in L2 Spanish: The Impact of Playing a Task-Based Digital Game on Beginner Learners' Language Development. ProQuest LLC 2023. https://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqm&rft_dat=xri:pqdiss:30491283
  17. [17]Leander S. Hughes. Text-Based SCMC for SLA: A Narrative Review. Technology in Language Teaching & Learning 2022. https://eric.ed.gov/?id=EJ1443965
  18. [18]Leander Hughes. Text-based SCMC for SLA: A narrative review. Technology in Language Teaching & Learning 2021. doi.org/10.29140/tltl.v4n1.712
  19. [19]REGINA HAMPEL. Rethinking task design for the digital age: A framework for language teaching and learning in a synchronous online environment. ReCALL 2006. doi.org/10.1017/s0958344006000711
  20. [20]Markus Kötter. Negotiation of meaning and codeswitching in online tandems. Language learning & technology 2003. doi.org/10.64152/10125/25203