Explanation
Language acquisition is the development of linguistic abilities through growth, interaction, and learning. Children do not simply copy a finished system. They segment a continuous stream of sound and action, discover recurring forms, build expectations, and test them in exchanges with others. Biological capacities, social participation, attention, and the structure of a particular language interact, while no single cause explains the entire process. Errors are therefore not merely deficits; they often reveal productive rule formation. Later acquisition of additional languages or literacy also reorganises existing knowledge. As a movement of thought, the concept leads from the imagined possession of a language to its continuing formation: linguistic ability emerges through feedback among pattern, situation, body, and response.
Movement of thought
1. A learner first encounters utterances within shared situations, actions, voices, and recurring patterns of joint attention. 2. Probable units and regularities are extracted from the stream even while their boundaries remain uncertain and revisable. 3. The learner's own utterances test these hypotheses and receive social feedback through understanding, misunderstanding, repetition, and repair. 4. A counter-test asks whether observed performance reflects acquired knowledge or only imitation, task routine, or short-term memory. 5. The growing system then changes perception and participation in turn and remains open to new contexts, registers, and languages.
Scientific use case
Acquisition research combines longitudinal observation, experiments, corpora, and cross-linguistic comparison to test developmental sequences, variation, and learning mechanisms. Overgeneralisation is especially revealing evidence of actively constructed rules.
Example
A child first says “goed,” extending a productive past-tense pattern. Through recurring use, the child later differentiates the exceptional form “went.”
Counterexample
A child repeats an unfamiliar sound sequence once immediately after an adult but cannot later use it or understand it in a new context. This alone does not demonstrate stable acquisition.
Distinction
Distinguish language acquisition from formally organised language learning, broader socialisation, and momentary performance. Acquisition includes implicit and explicit processes, first and additional languages, and cannot be reduced to error-free production.
Effect on thought and perception
The concept presents linguistic ability as dynamic practice and corrects the idea that acquisition consists only in storing ready-made words and rules.
Resonance
Environmental utterances prompt hypotheses; a learner's trials alter other people's responses, and this feedback shapes the emerging linguistic system.
Etymology
Technical core term; individual etymological review pending
Provenance
Unresolved relation network → core-concept review → Metzler/HWRh cross-check → ATLAS 238
Cite this entry
Reich, Michael (Hrsg./ed.): „Language acquisition“. Atlas der Sprache, AT-CORE-238-022. ATLAS 260, data model 1.6.0. https://atlasoflanguage.com/concept/AT-CORE-238-022The address remains stable; editorial content may evolve. Editorial reading state: 2026-10-15. Include your access date for precise references.
Historical background
Sapir opens his 1921 introduction by challenging the everyday impression that learning to speak is simply another bodily maturation like walking. His thought experiment moves a child into a different social environment: the particular language acquired would follow that environment rather than the parents’ language as a biological inheritance. This is a historical argument about the acquisition of a conventional system, not an experiment reported in the chapter. His stronger claim that language is non-instinctive belongs to his theoretical position and must not stand in for the subsequent debate about biological capacities and learning. For the Atlas, the passage makes a lasting distinction visible without resolving that debate: inheriting a capacity and acquiring a particular community’s practices are different explanatory questions. It also shows why acquisition cannot be described only as accumulating a dictionary. A child enters established ways of combining and interpreting forms. The history of the English compound language acquisition, and later developmental findings, remains to be traced separately.
How conceptual history changes the analysis
Acquisition is neither maturation alone nor mere accumulation of words. A demonstrated ability must extend beyond immediate imitation.
References for the historical section
- Edward Sapir, Language: An Introduction to the Study of Speech (1921) · Chapter I, opening comparison of acquiring speech with learning to walk
Original English text read in the Gutenberg transcription. No first-coinage claim, full-book verification or automatic endorsement of the author’s 1921 language classifications and generalisations. Examples require modern descriptive checking before reuse as current language data.