00 · IN THREE MINUTES

The answer in three steps

  1. 1Early language experience tunes perception toward frequently heard sound contrasts.
  2. 2Speech production becomes a highly practised coordination of tongue, lips, larynx and timing.
  3. 3Exposure, motivation, identity and social networks shape later change, so accent is neither fixed nor freely chosen.

01 · HEARING IS ALREADY CATEGORIZED

Hearing is already categorized

Listeners learn to group variable sounds into language-specific phoneme categories. A new language may divide the acoustic space at different boundaries, making two new sounds resemble one familiar category.

02 · SPEAKING IS A MOTOR SKILL

Speaking is a motor skill

Pronunciation depends on rapid coordination and timing. Thousands of hours make first-language gestures efficient and automatic, while new gestures and voice-onset patterns require deliberate recalibration.

03 · AGE CHANGES THE LEARNING CONDITIONS

Age changes the learning conditions

Earlier immersion is associated with more native-like outcomes on average. Biological development matters, but input quantity, literacy, schooling and social opportunity also change with age.

FIG. 03The answer in three steps
A conceptual model: the geometry shows relationships, not measured scale.

04 · ACCENT CARRIES AFFILIATION

Accent carries affiliation

Speakers converge toward or maintain differences from groups they identify with. Style shifts across workplaces, friends and formal settings show that one person can command a repertoire.

05 · PERSISTENCE IS NOT FAILURE

Persistence is not failure

An accent can remain even with fluent grammar and vocabulary. Intelligibility, communicative success and identity are different goals from imitating one prestige norm.

06 · SOURCES AND EVIDENCE

Sources and evidence

The explanation follows the evidence chain below. Links open the original source.

  1. 01
    Second language speech learning

    Supports a specific claim or evidence boundary used in this article.

    PEER-REVIEWED REVIEW ↗
  2. 02
    The revised Speech Learning Model

    Supports a specific claim or evidence boundary used in this article.

    SCHOLARLY MONOGRAPH ↗
  3. 03
    Sociophonetics: a student's guide

    Supports a specific claim or evidence boundary used in this article.

    SCHOLARLY MONOGRAPH ↗
CHANGE LOG28 Aug 2026 · First five-language edition; claims, evidence boundaries and visual model checked.