Principle
Optimize for intelligibility before accent imitation
The practical target is being understood with stable control.
When it fits
- Pronunciation practice is dominated by sounding exactly like one reference speaker.
When to avoid it
- Some learners legitimately want accent-specific performance. The principle is about priority, not forbidding that goal.
Why it matters
Prioritize pronunciation features that affect intelligibility, comprehensibility, rhythm or recurring misunderstandings. Accent reduction can be a personal goal, but it should not automatically outrank communication. Use listener evidence and repeated real tasks to decide which features deserve attention.
An example
A speaker with a noticeable accent but high intelligibility may gain more from pausing and stress control than from chasing a tiny vowel difference.
Check your result
Pronunciation targets are linked to listener understanding or a clearly chosen personal goal.
Keep this limit in mind
- Some learners legitimately want accent-specific performance. The principle is about priority, not forbidding that goal.
Evidence and sources
A 2025 meta-analysis found a large positive overall effect of L2 phonetic training, with perceptual training showing a larger average effect than production or combined training and stronger effects on perception than production outcomes.
The literature is heterogeneous and the relative advantage varies by learner, training and outcome measure.
A Meta-Analysis of Second Language Phonetic Training: Exploring Overall Effect and Moderating Factors · Abstract results
A 2025 systematic review suggests shadowing can improve comprehensibility, intelligibility, accentedness, fluency and some prosodic features, while evidence for segmental pronunciation is inconclusive and many studies rely on controlled tasks.
Shadowing performance should not be treated as evidence that the same gains transfer automatically to spontaneous speech.
A Systematic Review of Research on the use of Shadowing for Second Language Pronunciation Teaching · Abstract and discussion