Accent, clarity and being understood

People who are told they need to change their accent have generally been told something inaccurate about a real problem.

The distinction that matters

Three separate things.

Accent: the pattern of pronunciation associated with a region, language background or social group.

Everyone has one, including people who believe they do not.

Intelligibility: whether listeners can identify the words being said.

Comprehensibility: how much effort listeners must expend to understand.

Research in this area consistently finds that accent and intelligibility are only loosely related — a strong accent can be entirely intelligible, and a weak one can be hard to follow.

Which means the useful goal is intelligibility rather than accent reduction.

What actually affects intelligibility

The features that matter most.

Speech rate, which is the single largest factor and which is entirely within your control.

Word and sentence stress, which in stress-timed languages carries a great deal of the meaning — stressing the wrong syllable causes more confusion than pronouncing a sound differently.

Rhythm and intonation, which signal structure and emphasis.

Consonant clarity, particularly at the ends of words, which are frequently dropped and which carry grammatical information.

Vowel distinctions that are meaningful in the language, which is a smaller set than the full inventory.

And volume and articulation generally.

Working on these produces considerably more improvement than attempting to sound like a native speaker.

What to work on first

In order of return.

Slow down, which improves comprehension immediately and which most people can do at once.

Pause at phrase boundaries, which gives listeners processing time.

Complete word endings.

Check the stress pattern of words you use frequently, since a misplaced stress is more disruptive than a mispronounced sound.

Identify the specific sounds that cause confusion for your listeners, which is generally a small number rather than a general problem.

And record yourself, which is uncomfortable and is the only way to know what you actually sound like.

The listener's role

Which is frequently ignored.

Research on accent perception has found that listener attitude and familiarity substantially affect reported comprehension — listeners who expect to have difficulty report having it, independently of the actual speech.

Which means some reported comprehension problems are about the listener rather than the speaker.

Familiarity improves rapidly: listeners adapt to an unfamiliar accent within minutes of exposure.

And in international settings, everyone shares responsibility for mutual intelligibility rather than the responsibility falling on speakers of a second language.

Accent prejudice

Which is real and worth naming.

Studies have documented discrimination based on accent in employment, housing and legal settings, affecting both regional and second-language accents.

Accent is protected in some jurisdictions where it relates to national origin.

Which means someone advised to change their accent may be encountering prejudice rather than a communication problem.

And which is an argument for working on intelligibility, which is legitimate, rather than on sounding like someone else, which is a response to prejudice rather than a solution to it.

The identity question

Worth taking seriously.

An accent carries origin, community and history, and losing it has a cost that is rarely acknowledged by those recommending it.

Many people successfully operate with accents that are strongly marked and entirely clear.

Which means accent modification is a legitimate personal choice and is not a professional requirement, and framing it as one is inaccurate.

Some people choose to modify for specific contexts and retain their accent otherwise, which is a form of code-switching that most speakers do to some degree already.

If you want to modify it

Practically.

Work with a qualified accent coach or speech professional rather than an app, since feedback on your own production is what produces change.

Target specific features rather than the accent as a whole.

Expect it to take months of consistent practice.

Record and compare, since perception of your own speech is unreliable.

And be clear about the goal: clarity in specific contexts is achievable, and sounding indistinguishable from a native speaker generally is not for adults, and is not necessary.

For listeners

The other half.

Assume comprehension will improve with exposure, because it will.

Ask for repetition of the specific word rather than the whole sentence.

Do not raise your voice, which does not help and is patronising.

Do not finish their sentences.

Do not comment on the accent unless invited.

And recognise that a second-language speaker is operating in your language, which is an asymmetry worth some patience.