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Second-language acquisition

process in which a second or additional language is acquired after the first language has been learned

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 21, 2026
Entity authorityQ1455178
Source-derived summary

Second-language acquisition (SLA), second-language learning or L2 (language 2) acquisition, is the process of learning a language other than one's native language (L1). SLA research examines how learners develop their knowledge of second language.

SLA research spans cognitive, social, and linguistic perspectives:

Cognitive approaches investigate memory and attention processes.

Sociocultural theories emphasize the role of social interaction and immersion

Linguistic studies examine the innate and learned aspects of language.

Individual factors like age, motivation, and personality also influence SLA, as seen in discussions on the critical period hypothesis and learning strategies. In addition to acquisition, SLA explores language loss, or second-language attrition, and the impact of formal instruction on learning outcomes.

Definitions

Second language refers to any language learned in addition to a person's first language; although the concept is called second-language acquisition, it can also incorporate the learning of third, fourth, or subsequent languages. Second-language acquisition refers to what learners do; it does not refer to practices in language teaching, although teaching can affect acquisition. The term acquisition was originally used to emphasize the non-conscious nature of the learning process, but in recent years learning and acquisition have become largely synonymous.

SLA can incorporate heritage language learning, but it does not usually incorporate bilingualism.

Editorial summary

“Second-language acquisition” enters the record as process in which a second or additional language is acquired after the first language has been learned. Crown Archives preserves that source wording while asking what Second-language, acquisition and process can confirm, complicate or overturn.

Editorial reviewA dependable orientation record for establishing vocabulary, names and a first evidence trail. The current 205-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Second-language, acquisition and process.
Editorial analysis

Why this record matters

“Second-language acquisition” is worth following because a concise public description often conceals a longer documentary argument. Here, Second-language, acquisition and process provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 21, 2026. The linked authority identifier is Q1455178. The Library of Congress control number is sh86005959. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Second-language acquisition”, its source revision and the description used here.
  2. Expand the search: follow Second-language acquisition primary sources, Second-language acquisition archive and Second-language research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

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Source & attribution

This entry incorporates text from Second-language acquisition” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.