Non-native pronunciations of English

Non-native pronunciations of English result from the common linguistic phenomenon in which non-native users of any language tend to carry the intonation, phonological processes and pronunciation rules from their first language or first languages into their English speech. They may also create innovative pronunciations for English sounds not found in the speaker's first language.

The speech of non-native English speakers may exhibit pronunciation characteristics that result from such speakers imperfectly learning the pronunciation of English, either by transferring the phonological rules from their mother tongue into their English speech ("interference") or through implementing strategies similar to those used in primary language acquisition. They may also create innovative pronunciations for English sounds not found in the speaker's first language.

The age at which speakers begin to immerse themselves into a language (such as English) is linked to the degree in which native speakers are able to detect a non-native accent; the exact nature of the link is disputed amongst scholars and may be affected by "neurological plasticity, cognitive development, motivation, psychosocial states, formal instruction, language learning aptitude", and the usage of their first (L1) and second (L2) languages.

English is unusual in that speakers rarely produce an audible release between consonant clusters and often overlap constriction times. Speaking English with a timing pattern that is dramatically different may lead to speech that is difficult to understand.

More transparently, differing phonological distinctions between a speaker's first language and English create a tendency to neutralize such distinctions in English, and differences in the inventory or distribution of sounds may cause substitutions of native sounds in the place of difficult English sounds and/or simple deletion. This is more common when the distinction is subtle between English sounds or between a sound of English and of a speaker's primary language. While there is no evidence to suggest that a simple absence of a sound or sequence in one language's phonological inventory makes it difficult to learn, several theoretical models have presumed that non-native speech perceptions reflect both the abstract phonological properties and phonetic details of the native language.

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