Language Transfer

Definition:

Language transfer is the influence of a learner’s previously acquired language(s) on the acquisition and use of a new language. When properties of the L1 (or other previously learned languages) carry over into learner production or comprehension in the L2, this is described as transfer. Transfer can be positive — when L1 and L2 structures are similar, prior knowledge facilitates learning and performance — or negative (also called interference) — when L1 and L2 differ, relying on the L1 pattern produces errors in the L2. Language transfer is one of the five central processes that Larry Selinker identified as shaping interlanguage development, and it remains one of the most extensively documented phenomena in second language acquisition research.

Also known as: L1 interference, crosslinguistic influence (CLI), crosslinguistic transfer, negative transfer (for errors), positive transfer (for facilitation)

In-Depth Explanation

Positive transfer.

Positive transfer occurs when L1 and L2 share structural features — the learner’s prior knowledge of the L1 feature correctly predicts the L2 form. Examples:

Spanish ? Portuguese: very high degree of positive transfer at lexical, phonological, and morphosyntactic levels due to close genealogical relationship.
English ? French: substantial cognate vocabulary; many Latin-derived words transfer with minor spelling/pronunciation adjustment.
Japanese ? Korean: significant syntactic positive transfer (both are SOV, verb-final, postpositional languages).

For language learners, languages with high typological similarity to the L1 are typically faster to learn — a prediction confirmed by research on language learning difficulty (e.g., the US Foreign Service Institute’s category ratings for English-speaking learners: Spanish and French as Category I = ~600 hours; Japanese, Korean, Arabic as Category IV = 2,200+ hours).

Negative transfer (interference).

Negative transfer produces transfer errors — areas where the learner applies L1 patterns to the L2 when the L2 pattern differs:

English L1 learners in Japanese: defaulting to SVO word order instead of SOV; marking no grammatical case explicitly (English lacks overt case morphology); difficulty with pitch accent (English lacks lexical pitch distinctions).
Japanese L1 learners in English: deleting articles (Japanese has no article system); omitting subjects (Japanese allows null subjects freely); inserting pauses/filler where Japanese would use different boundary markers.
Spanish L1 learners in English: “false friend” errors (realizar ? realize when Spanish realizar means “to achieve,” not “to understand”); null subject transfer (Is raining instead of It is raining).

The Contrastive Analysis Hypothesis.

The Contrastive Analysis Hypothesis (CAH), proposed by Robert Lado (1957) in the tradition of the Audio-Lingual Method:

Strong version: All errors in L2 learning can be predicted and explained by comparing the structures of L1 and L2. Areas of L1-L2 difference will consistently produce errors; areas of similarity will not.
Weak version: Contrastive analysis can explain certain observed errors after the fact; systematic prediction of all errors is not possible.

The strong version of CAH was largely refuted empirically — many predicted transfer errors do not occur, and many errors occur from non-transfer sources (developmental sequences, overgeneralization). The weak version is broadly accepted.

Crosslinguistic influence (CLI) — the modern framework.

The modern framework for language transfer research is Crosslinguistic Influence (CLI), a term introduced by Terence Odlin (1989) to capture the full range of ways in which previously known languages influence L2 acquisition — not just interference errors but also:

Avoidance: Learners avoid using L2 structures that are very different from L1 equivalents (Japanese learners avoiding English relative clauses because Japanese relative clause structure is so different).
Cross-linguistic facilitation: Positive transfer including faster lexical acquisition for cognates, easier adaptation to similar morphology.
Borrowing: Direct insertion of L1 words or calques into L2 production when the L2 lexical item is unknown.
Interlingual identification: Learners map L2 sounds onto the closest L1 phoneme — explains why Japanese learners initially merge English /r/ and /l/, which are not phonemically distinct in Japanese.

Transfer in phonology versus syntax.

Transfer operates differently at phonological vs. syntactic/morphological levels:

Phonological transfer (foreign accent) is pervasive, persistent, and highly susceptible to fossilization. Native-like phonology in an L2 acquired after the critical period is rarely achieved. Japanese learners of English systematically transfer mora-timed rhythm and segment merger patterns.
Syntactic transfer can produce dramatic early errors (word order, argument structure) but is often more amenable to correction than phonological transfer, as overt correction and explicit instruction can override transferred syntactic patterns more readily than transferred phonological habits.

Language transfer in Japanese for English speakers.

English-Japanese transfer involves some of the most extreme crosslinguistic divergence:

Word order: SOV vs. SVO — English speakers must learn to suspend verb production until the end of the clause.
Articles: Japanese has no definite/indefinite article system. English speakers learning Japanese have no article transfer issue; Japanese learners of English must acquire article use from scratch with no L1 support.
Particles: English uses prepositions; Japanese uses postpositions (wa, ga, wo, ni, de, etc.) that mark grammatical function. No direct equivalence.
Pitch accent: English is stress-timed; Japanese is mora-timed and pitch-accented. English speakers typically transfer stress-based prosody, producing incorrectly stressed rather than pitch-accented Japanese.

Common Misconceptions

“Transfer errors mean the learner is lazy or not trying.”

Transfer errors are automatic — they reflect the operation of the learner’s most developed linguistic system (the L1) filling gaps in the developing L2. They are not under conscious control and are not a sign of inadequate effort. They are an expected and informative feature of interlanguage development.

“Transfer occurs across all language levels equally.”

Transfer varies substantially across linguistic levels and language pairs. Lexical transfer (cognates, loanwords) strongly facilitates learning for related languages. Phonological transfer is highly persistent and difficult to overcome. Syntactic transfer produces dramatic early errors that often substantially reduce with development. Transfer patterns must be assessed specifically, not assumed to operate uniformly.

History

The systematic study of language transfer began with Lado’s Linguistics Across Cultures (1957), which proposed the strong Contrastive Analysis Hypothesis as a framework for predicting L2 learning difficulty from L1-L2 structural comparison. SLA research in the 1970s–1980s complicated and refined the CAH, leading to Odlin’s Language Transfer (1989), which established the modern CLI framework. Ongoing research continues to investigate the precise mechanisms, scope, and limits of crosslinguistic influence in phonology, lexis, syntax, and pragmatics.

Criticisms

The language transfer framework has been criticized for imprecision in attributing learner errors to L1 influence versus developmental patterns — distinguishing transfer errors from errors that any learner at that developmental stage would make (regardless of L1) is methodologically difficult. Some researchers have argued that apparent transfer effects are better explained by input frequency, markedness, or general cognitive learning constraints rather than L1-specific transfer. The concept of “negative transfer” (interference) has been historically overemphasized relative to facilitative positive transfer effects.

Social Media Sentiment

Language transfer is widely discussed in language learning communities under the practical concepts of “interference,” “false friends,” and “L1 thinking in the L2.” Learners share specific interference patterns (Japanese learners using English word order in Japanese, English learners inserting copula where it’s absent in the L2), False cognate warnings, and strategies for “thinking in the L2.” The phenomenon of language transfer is intuitively available to any learner who notices their L1 influencing their L2 output.

Last updated: 2026-04

Practical Application

Exploit positive transfer deliberately: identify cognate vocabulary, shared grammatical features, and structural parallels between your L1 and target language at the start of study to leverage existing knowledge. Systematically identify high-frequency interference patterns (false cognates, word order differences, phonemes that don’t exist in your L1) and target them explicitly for correction.

Related Terms

Research

Odlin, T. (1989). Language Transfer: Cross-Linguistic Influence in Language Learning. Cambridge: Cambridge University Press.

— The foundational modern synthesis of the language transfer literature; reviews evidence across phonology, syntax, semantics, and pragmatics; introduces the term crosslinguistic influence (CLI) and establishes the modern scope of the field.

Lado, R. (1957). Linguistics Across Cultures. Ann Arbor: University of Michigan Press.

— The original Contrastive Analysis Hypothesis; proposed systematic prediction of L2 errors from L1-L2 structural comparison; the founding document of the transfer-focused tradition in applied linguistics.

Jarvis, S., & Pavlenko, A. (2008). Crosslinguistic Influence in Language and Cognition. New York: Routledge.

— Extends CLI analysis beyond language structure to cognitive processing and conceptual transfer; shows that L1 influence encompasses not just grammatical patterns but conceptualization, perspective-taking, and event construal.

Kellerman, E. (1979). Transfer and non-transfer: Where we are now. Studies in Second Language Acquisition, 2, 37–57.

— Introduced the concept of psychotypology — learners’ subjective assessment of L1-L2 distance (which may differ from linguistic typology) predicts whether they will attempt transfer; learners avoid transferring features they perceive as L1-specific.

MacWhinney, B. (1997). Second language acquisition and the Competition Model. In A.M.B. de Groot & J.F. Kroll (Eds.), Tutorials in Bilingualism. Mahwah, NJ: Erlbaum.

— The Competition Model account of transfer: L1 learners have established strong form-function mappings (cue reliabilities) that compete with emerging L2 cue mappings, producing transfer errors; acquisition is the process of restructuring these competing cue maps.