Delayed Speech or Language Development: What's the Difference?
When your child isn't communicating quite as you'd expect, it can be difficult to know whether they're experiencing a speech delay, a language delay or simply developing at their own pace.
You might notice your child struggling to pronounce certain words, using fewer sentences than other children their age or becoming frustrated when trying to explain what they want.
While speech and language are closely connected, they're not quite the same thing.
Understanding the difference between a speech delay and a language delay can help parents recognise what their child may be finding difficult and when additional support could be helpful.
What is a speech delay?
Speech refers to how we produce sounds and words. It involves coordinating the lips, tongue, jaw, voice and breathing to communicate through spoken language.
A speech delay occurs when a child's speech skills are developing more slowly than expected for their age.
For example, your child might know exactly what they want to say but have difficulty producing the sounds clearly enough for other people to understand.
Some common signs of speech sound difficulties include:
Substituting one sound for another, such as saying "tat" instead of "cat".
Leaving sounds out of words.
Having difficulty producing certain consonants or sound combinations.
Being understood by close family members but frequently misunderstood by others.
Becoming frustrated when people can't understand what they're saying.
Some speech sound differences are a normal part of early development. However, persistent difficulties may benefit from assessment.
If you're wondering which sounds children typically develop at different ages, read our What Speech Sounds Should My Child Be Able to Say at Their Age? guide.
What is a language development delay?
Language development refers to how we understand and use words, sentences and other forms of meaningful communication. Unlike speech, language isn't limited to spoken words. Children can develop and use language through signing and other accessible communication methods. A language delay occurs when a child's language skills develop more slowly than expected for their age. Language development generally involves two important areas.
Receptive language: Understanding communication
Receptive language is our ability to understand what other people communicate.
A child experiencing receptive language difficulties might:
Have trouble following age-appropriate instructions.
Find questions difficult to understand.
Struggle to understand new vocabulary.
Need additional support to follow conversations or classroom explanations.
Expressive language: Sharing thoughts and ideas
Expressive language is how we communicate our own thoughts, needs, feelings and ideas.
A child experiencing expressive language difficulties might:
Use fewer words or signs than expected for their age.
Have difficulty combining words or signs into longer messages.
Struggle to explain what happened during their day.
Use shorter or less complex sentences than their peers.
Become frustrated when they can't communicate what they mean.
Some children experience difficulties with expressive language, receptive language or both.
Speech delay vs language delay: What's the main difference?
The simplest way to understand the difference is:
Speech is about producing spoken sounds.
Language is about understanding and expressing meaning.
For example, imagine two children who are both finding communication difficult. One child understands instructions, uses age-appropriate sentences and has plenty to say but their pronunciation makes them difficult to understand.
This may indicate a speech sound difficulty.
Another child pronounces individual words clearly but struggles to combine them into sentences or understand questions.
This may indicate a language difficulty.
Both children may benefit from support, but the areas addressed in therapy could be quite different.
Can a child have both a speech and language delay?
Yes. Speech and language difficulties can occur separately or together. Some children have difficulty producing speech sounds but otherwise have age-appropriate language skills.
Others have clear speech but experience challenges understanding or expressing language.
Some children experience difficulties in both areas.
This is why a Speech Language Therapist looks at a child's broader communication development rather than focusing only on how clearly they pronounce words.
Why might speech or language development be delayed?
There isn't always one clear reason why a child experiences speech or language difficulties.
Development can be influenced by a range of factors, including hearing difficulties, developmental differences, difficulties with speech sound production and individual language-learning needs.
Some children experience speech or language difficulties without an identifiable underlying cause.
Children who grow up using more than one language may also develop skills differently across those languages. Being bilingual or multilingual does not itself cause a language disorder.
An assessment can help identify your child's communication strengths, explore possible contributing factors and determine whether additional support would be useful.
When should parents seek support?
Every child develops at their own pace, but it's important not to dismiss ongoing concerns simply because children develop differently.
It may be worth speaking with a Speech-Language Therapist if:
Your child is regularly difficult for others to understand.
They use fewer words, signs or sentences than expected for their age.
They have difficulty understanding everyday instructions or questions.
Communication difficulties are causing frustration.
Their communication skills don't appear to be progressing.
They are having difficulty participating in preschool, school or social situations.
You have concerns about their communication development.
You don't need to know whether your child has a speech delay or language delay before seeking advice.
If you're unsure whether additional support may be helpful, our article Does My Child Need Speech Therapy? 10 Signs Parents Should Know explores some common reasons families seek an assessment.
How can speech language therapy help?
Speech-Language Therapists support children across a wide range of speech, language and communication needs.
Depending on your child's strengths and difficulties, therapy may focus on:
Developing clearer speech sounds and pronunciation.
Building vocabulary and sentence structure.
Supporting understanding of language and instructions.
Helping children express their thoughts and ideas.
Developing communication skills for everyday interactions.
Providing parents and whānau with practical strategies to use at home.
Therapy should be individualised, engaging and relevant to the child's everyday life. For younger children, this often involves play-based activities and working closely with parents and caregivers.
Supporting your child's communication at home
Everyday interactions provide valuable opportunities to support both speech and language development. Talking, signing, reading, playing and responding to your child's attempts to communicate can all help build language skills.
Rather than constantly correcting pronunciation or asking your child to repeat words, focus on modelling language naturally and creating enjoyable opportunities to communicate.
You can find more practical ideas in our Supporting Your Child's Communication at Home article.
Speech language therapy for children across NZ
If you're concerned about your child's speech or language development, understanding what they're finding difficult is the first step towards getting appropriate support.
At Talk Together, our Speech-Language Therapists work with children and families to identify communication strengths, explore challenges and develop practical strategies that support everyday communication.
Our child-centred approach focuses on making therapy meaningful, engaging and suited to each child's individual needs.
Learn more about our Speech-Language Therapy in Christchurch, our online speech therpay sessions or contact Talk Together to discuss your child's communication development and whether an assessment may be helpful.
