Mother Tongue
entry by Julie M. Marx, Global Family Expert at Expat Valley
The language first acquired in childhood, typically within the family home, and associated with earliest emotional and relational experience. The term is widely used in everyday and educational contexts but is contested in applied linguistics for its assumption of a singular, stable first language, an assumption that does not hold for many multilingual and internationally mobile individuals whose linguistic formation is plural from the outset.
Comparable terms
1st language / L1 (linguistics — the standard academic term; preferred for its precision) · Home language (education — refers to the primary language of the household) · Native language (general usage — contested; implies a degree of nativeness not always present) · Heritage language (see separate entry — related but distinct; heritage language emphasizes cultural transmission and may not be the first language acquired) · Primary language (education, clinical — functional equivalent; preferred in multilingual contexts for its neutrality)
Why this matters
Mother tongue is often the language of earliest attachment, comfort, and emotion. For mobile multilinguals, it may not map neatly onto a single country or school language. Being precise about what “mother tongue” means avoids confusion in assessments and school forms.
Cross-references
Heritage Language (Language & Identity); Dominant Language Shift (Language & Identity); L1/L2 (Language & Identity); Language Identity (Language & Identity); Language Maintenance (Language & Identity); EAL (Education). L1 is the technical linguistic equivalent of mother tongue, with important caveats about plurality and sequence documented in the L1/L2 entry. Language identity documents how the mother tongue — as the language of earliest emotional and relational experience — is often the most identity-laden of an individual’s languages; language maintenance describes the active effort required to sustain it when the surrounding linguistic environment changes. EAL describes the educational designation most commonly applied to children whose mother tongue differs from the school language.
Sources
The contested status of “mother tongue” is well-established in applied linguistics. The most directly applicable source is: Phillipson, R. (1992). Linguistic Imperialism. Oxford University Press, which critiques the ideological assumptions embedded in mother-tongue-based educational models. For the multilingual context, see: Cummins, J. (2000). Language, Power and Pedagogy: Bilingual Children in the Crossfire. Multilingual Matters.
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