Learn about language acquisition theories and research-backed approaches to language learning.
Grammar-Translation Method
Language teaching method focusing on explicit grammar rules and translation
Why it matters:
For immersion learners, understanding GTM's failures is crucial because it represents everything modern SLA research shows doesn't work for language acquisition. GTM creates explicit, conscious knowledge about language rather than the implicit, subconscious language instincts that drive natural communication. This distinction explains why traditional classroom learners often struggle to understand native speakers or speak naturally despite years of study, highlighting the superiority of comprehensible input-based approaches.
Traditional Language Learning
Traditional language learning is grammar rules and translation.
Why it matters:
For immersion learners, this traditional method highlights what Refold avoids—learning about language rather than acquiring it. It underscores the difference between declarative learning and naturalistic acquisition, confirming why comprehension‑first input is crucial.
Immersion Learning
Learning a language through meaningful target language input.
Why it matters:
This approach is essential for immersion learners because it replicates real-world conditions, helps build comfort with ambiguity, and supports long-term acquisition without needing translation. It reframes language learning as a habit of input consumption, which is especially powerful for self-directed adult learners.
Delay Speaking
Delay in speaking during language learning to build comprehension first
Why it matters:
This concept is critical for immersion learners because it reframes silence not as failure but as a strategic choice. Rather than forcing output early, learners can focus on absorbing the target language through listening and reading, allowing for more accurate and confident speech to emerge over time. It supports long-term fluency by reducing premature fossilization and stress.
Language Instinct
Language instinct is the "feeling" of correctness or incorrectness.
Why it matters:
For immersion learners, it underscores that exposure to comprehensible input triggers deep internalization of grammar without formal instruction, aligning with Refold’s focus on listening and subconscious absorption rather than early grammar drills.
Comprehensible Input
The most important theory in language learning
Why it matters:
Comprehensible input forms the theoretical foundation for immersion-based language learning methods. Unlike traditional approaches that emphasize grammar rules and output practice, comprehensible input theory suggests that massive exposure to understandable messages in the target language naturally develops all language skills. This understanding revolutionizes how we approach language learning - shifting focus from conscious study to meaningful communication and authentic content consumption. It explains why immersion environments are so effective and why some traditional classroom methods fail to produce fluent speakers despite years of instruction.
i+1
A slightly advanced input level beyond current competence
Why it matters:
It matters because immersion learners acquire language most effectively when exposed to challenging but understandable input, supporting Refold’s emphasis on natural, meaning‑focused listening before forced output.
Acquisition vs Learning
Language acquisition is unconscious; learning is conscious and explicit.
Why it matters:
This concept explains why input-rich environments lead to deeper, more fluent language skills. Understanding this distinction helps learners prioritize real-world input and develop intuition for the language.
Comprehensible Input (Genre)
Comprehensible input (genre) is content that aids in language acquisition.
Why it matters:
Comprehensible input (genre) media matters because not all content is equally accessible to beginners. CI with visual scaffolding, high redundancy, or predictable patterns enables learners to experience more i+1 moments. This scaffolding accelerates acquisition, promotes confidence, and reduces cognitive overload.
Pillars of Immersion Learning
Three key components of immersive language acquisition
Why it matters:
These pillars matter because they create a holistic, sustainable environment for language acquisition. Two types of input build mental models of the language, and priming makes the language more comprehensible during your input. Together, they reflect modern SLA insights that acquisition thrives in meaningful, communicative contexts.
Reading (and Listening) Early
Reading and listening from the start of study to build comprehension.
Why it matters:
Reading and listening early helps learners acclimate to the target language, build passive understanding, and reduce anxiety around unknown words. For immersion learners, it allows meaningful input to begin immediately, even with minimal active knowledge. It allows for the acquisition of vocabulary and reading ability without harming your listening.
Value of Subtitles
SLS aid understanding and word learning by showing text that matches speech.
Why it matters:
SLS helps immersion learners by reinforcing the link between spoken and written language. It supports parsing fast native speech, aids recognition of word boundaries, and helps learners confirm guesses from context. For Refold learners, it allows high-input immersion while scaffolding comprehension through textual support.
Translating in Your Head
Consciously converting L2 input into L1 before understanding or responding.
Why it matters:
While normal early on, continued dependence on mental translation can hinder fluency and automaticity. Immersion learners aim to reduce this habit over time by building direct mental connections to L2 meaning. Recognizing when translation becomes a bottleneck is key to transitioning to thinking in the target language.
Video available
Optimal Input
Optimal input is language that is comprehensible and slightly challenging.
Why it matters:
For immersion learners, optimal input keeps language learning both accessible and stimulating. It helps maintain motivation and supports natural language growth by exposing learners to novel structures and vocabulary in comprehensible contexts. It’s a key factor in avoiding stagnation or burnout.
Video available
The Role of Noticing
A learner’s conscious awareness of language in input.
Why it matters:
This concept is crucial in immersion because it helps transform passive exposure into active learning. While immersion provides massive input, noticing ensures that the learner actually processes new language patterns, making learning more efficient. It also explains why some learners plateau despite high exposure, they may not be noticing critical forms.
Video available
Silent Period
A phase in early language acquisition where learners input but don't output.
Why it matters:
This concept matters for immersion learners because it supports the experience of not speaking early on. It supports the idea that comprehension-first learning mirrors how children acquire language and prevents the stress of forced production. It encourages learners to trust the process and focus on high-quality input.
Affective Filter
A mental and emotional barrier that impacts language acquisition.
Why it matters:
Affective factors can determine how much input a learner actually processes, regardless of its quality. For immersion learners, maintaining low stress and positive emotional states enables more effective acquisition from natural input. It highlights the importance of mindset and emotional regulation in sustaining long-term immersion.
Output Hypothesis
Producing language (speaking or writing) supports acquisition.
Why it matters:
This concept highlights why engaging in output (e.g., conversation, journaling) is valuable even during immersion. While input lays the foundation, output reveals gaps and strengthens learning. It challenges the idea that input alone is sufficient and helps learners achieve productive fluency more effectively.
Spaced Repetition (SRS)
Spaced repetition is a method that schedules reviews at adaptive intervals.
Why it matters:
It matters for immersion learners because it allows efficient reinforcement of vocabulary and structures encountered in input. When paired with immersion, SRS helps consolidate passive recognition into active recall, accelerating fluency. It supports self-directed learners in managing large volumes of content over time.
Fossilization
The process by which incorrect usage becomes habitual/resistant to change.
Why it matters:
Fossilization is a major concern for immersion learners because it highlights the limits of passive exposure. Without active efforts to notice and correct errors, learners may plateau and retain incorrect forms. Recognizing fossilization helps learners and educators design strategies to prevent or reverse it.
Freeflow Immersion
Uninterrupted immersion in the target language.
Why it matters:
It matters because it cultivates sustained attention and builds a habit of extended target language use. For immersion learners, it reduces friction and allows deep processing of language features without conscious effort, aligning with Refold’s Phase 2 and 3 goals of passive and active immersion.
Priming
Priming is exposure to something to facilitate learning it in immersion.
Why it matters:
It matters for immersion learners, priming helps internalize grammatical patterns without explicit instruction by repeatedly exposing learners to key structures in context, supporting Refold’s emphasis on natural, input-driven acquisition and faster, more accurate production.
Interactive Immersion
Active engagement with input through real-time interaction and feedback.
Why it matters:
For immersion learners, interactive immersion bridges the gap between passive input and active output. It allows learners to test hypotheses, receive feedback, and build fluency in a low-stakes environment. This can reduce the fear of speaking, improve confidence, and foster deeper engagement with the language.