Why your second language sounds different: the hidden logic of interlanguage
In short: When you learn a new language, you do not just mimic native speakers. You build a unique, temporary linguistic system of your own. This interlanguage is a living, evolving structure that bridges your native tongue and your target language, often revealing surprising patterns of logic, regression, and creative adaptation.
Coined by Larry Selinker in 1972, the theory of interlanguage posits that the human brain activates a dormant psychological framework when acquiring a second language. Unlike the older, deficit-focused contrastive analysis—which viewed learner errors as random failures to be corrected—interlanguage theory treats these utterances as a systematic, independent linguistic system. This system is shaped by a learner's first language, their learning strategies, and their unique experiences with the target language.
A defining feature of interlanguage is its inherent variability. Learners often produce different variants of the same structure depending on the context. For example, a learner might use a correct form during a formal, planned writing task but revert to a non-target-like form in spontaneous conversation. This is not necessarily a sign of incompetence; it is often a reflection of social variables, such as the status of the person they are speaking to, or linguistic factors, such as the phonological environment of neighboring words.
The development of this system is rarely linear. Learners sometimes exhibit a U-shaped learning pattern, where they initially use a grammatical feature correctly through rote memorization, regress as they begin to apply broader, yet incomplete, grammatical rules, and finally achieve mastery. This process can eventually lead to fossilization, where the learner stops developing at a specific stage. This occurs even in motivated individuals, often because their current proficiency is sufficient to convey meaning, removing the pressure to refine their form further.
Ultimately, interlanguage research has shifted the focus of second-language acquisition from error correction to understanding the learner's underlying knowledge. By comparing learner speech to both their first language and the target language, scholars have identified how these systems conform to universal linguistic norms. Whether through the use of prefabricated chunks or the navigation of complex syntax, the interlanguage remains a testament to the brain's active, ongoing attempt to organize a new world of communication.
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- Summary by Intellect · source: Interlanguage
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