Speech Sound Disorders: What they are and signs

When a child always says "tato" instead of "gato" (cat), "pao" instead of "pão" (bread), or "peto" instead of "preto" (black), many adults think it's just "baby talk.".

At certain ages this is normal. But when these mistakes are very frequent, persist after age 4, and begin to cause frustration, we may be facing a problem. phonological disorder.

Phonological disorder is part of the speech sound disorders. It affects how a child organizes, represents, and uses sounds in their "internal system," even if their hearing and intelligence are within the expected range. The result is speech with many errors, which can be difficult to understand for those who do not interact with the child daily. 

In this article, we will explain, in clear language, what phonological disorder is, what the warning signs are at home and at school, what impact it can have on reading and writing, how the assessment is done in speech therapy, and what exercises help, both in session and at home.

What is phonological disorder?

Simply put, we say that phonological disorder exists when a child has difficulty using speech sounds appropriately and consistently within words, even though they can often produce those same sounds in isolation. 

Some key ideas:

• It's neither "laziness" nor "mania"“

• It's not just an isolated sound exchange.

• It involves error patterns that are repeated in many words.

• This translates to a difficulty in how the brain organizes and applies the rules of the language's sound system.

For example, instead of just changing the /r/ in some words, the child could:

• systematically replace “difficult” sounds with simpler ones.

  • “tado” for “each”, “peta” for “party”

• dropping consonants in groups

  • “"duck" for "dish", "clola" for "school"”

• simplify the structure of words

  • “"tato" for "gato" (cat), "nana" for "banana" (banana)”

Phonological disorder is one of the possible diagnoses within the Children's speech problems and falls under the category of so-called speech sound disorders, which also includes conditions such as dyslalia and phonological delay. 

Phonological disorder, dyslalia, and phonological delay: what is the difference?

It is very common to confuse phonological disorders, dyslalia and phonological delay. Distinguishing between these terms helps to better understand the child's condition.

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  • It is more related to articulation difficulties, that is, the physical way of producing a sound with the tongue, lips, and jaw.

  • It can affect one or a few sounds, with relatively stable errors.

  • A typical example is the article "dislalia," which focuses on substitutions such as "uápis" instead of "lápis" (pencil) or "tato" instead of "gato" (cat).“

• Phonological delay

  • The child follows the same error patterns as other younger children.

  • She is "behind" in relation to expected developmental milestones, but the type of errors is typical for younger ages.

• Phonological disorder

  • There are error patterns that are no longer expected for that age.

  • Atypical phonological processes may arise.

  • The errors can be numerous and persistent, sometimes resulting in pronunciations that differ significantly from the intended word. 

In practice, it is the one who makes this distinction. speech therapist, ...based on a detailed assessment. But it's useful to know that it generally implies a more pronounced framework with a greater impact on communication and learning.

Signs of phonological disorder by age.

Not all errors indicate a phonological disorder. Therefore, more than looking at a specific sound, it is important to observe the frequency, consistency, and age of the child. 

Below are some signs that may raise suspicion.

Between the ages of 3 and 4

Some mistakes may still be normal, but it's advisable to be aware if:

• • It is difficult for people outside the family to understand what the child is saying.

  • There are many omissions of consonants at the beginning or end of words.

  • The same word always appears with serious errors, even in familiar contexts.

  • The child shows frustration when they are not understood.

If, in addition, the language in general is underdeveloped (few sentences, limited vocabulary), it is worth cross-referencing these signs with what is described in the article. Language delay.

From age 4 onwards

Here the signs become clearer:

• • The discourse remains difficult to understand, even for educators and teachers.

  • There are several error patterns that are no longer expected for this age.

  • The child may be the target of comments or teasing from peers.

  • Difficulties in learning to read and write begin to emerge, especially when there are also characteristics of Dyslexia 

When these signs persist over time, we are no longer talking about just "immaturity" of the sound system, but rather a disorder that clearly benefits from specialized intervention.

Causes and risk factors in phonological disorder

Phonological disorders result from a combination of factors. In many cases, a single cause is not found, but research has pointed to some important areas:

• genetic and family factors

  • There are often precedents for speech difficulties or language in other family members

• differences in how the brain processes speech sounds

  • changes in the perception, discrimination and storage of sounds

  • Phonological processing difficulties may later also be linked to conditions such as Dyslexia 

• linguistic exposition

  • Language-poor environments with little direct interaction may not, on their own, cause phonological impairment, but they can exacerbate a more vulnerable baseline profile.

• association with other conditions

  • specific developmental language disorder

  • childhood apraxia of speech in cases of inconsistent phonological disorder

  • previous hearing impairments, in some cases

Types of phonological disorders

Studies on speech sound disorders describe different subtypes of phonological disorders, which helps guide intervention.

The most frequently mentioned are:

• consistent phonological disorder

  • The child exhibits a set of phonological processes that are repeated in a stable manner.

  • The errors are always of the same type for those sounds.

• inconsistent phonological disorder

  • The same word can be produced in several different ways.

  • There is great variability in error, which indicates more marked difficulties in the planning and stabilization of word form.

• paintings that approach childhood apraxia of speech

  • when variability and error patterns suggest problems with motor speech planning and not just phonological organization.

  • At this point it may be helpful to read the article on childhood apraxia of speech, which delves deeper into this type of motor disorder.

Identifying the subtype of phonological disorder is important because some therapy approaches work better with certain profiles than with others.

Phonological disorder and difficulties in reading and writing.

A critical aspect of phonological disorder is its impact on learning to read and write. Many children also have difficulties with skills such as:

• awareness of the sounds of words

• segment words into syllables and phonemes

• Connecting sounds to letters

• manipulating sounds to form new words

These skills are fundamental to reading and writing and are compromised in disorders such as dyslexia. 

Therefore, in preschool age, early intervention in phonological disorders is also a way to prevent or mitigate future difficulties at school.

How is phonological disorder assessed?

When a phonological disorder is suspected, the next step is a comprehensive speech therapy assessment. This assessment seeks to understand:

• which sounds are altered

• What error patterns exist?

• whether the errors are typical for younger ages or atypical

• if there is an association to Language delay, hearing problems or other communication disorders

In practical terms, the evaluation includes:

• interview with the parents

  • developmental history, family background, school context

• speech sample collection

  • naming images, repeating words and phrases

  • collection of spontaneous speech during play or conversation

• phonetic transcription and phonological analysis

  • identification of phonological processes present

  • Calculating measurements such as the percentage of correct consonants.

• Language assessment and, if age warrants, reading and writing.

  • It is common to cross-reference the information here with what is observed in Children's speech problems in general

After this analysis, the speech therapist The instructor explains to the family whether we are dealing with a phonological delay, a phonological disorder, or another type of speech sound disorder, and proposes an intervention plan.

When to seek help with speech therapy.

Generally speaking, it's worth seeking an evaluation in Speech therapy when:

• Speech remains very difficult to understand after the age of 4.

• There are many errors that don't seem to diminish over time.

• There are complaints at the school about speech intelligibility.

• reading and writing difficulties arise associated

• The child himself is ashamed to talk about it or avoids participating.

In the first phase, you can find out what a... speech therapist and about how the follow-up goes in Paediatric speech therapy. If travel is difficult, it is now possible to combine in-person sessions with online speech therapy, which facilitates monitoring and support for the family.

Conclusion

Phonological disorder is not just "“baby talk "That never goes away." It is a concrete difficulty in the organization of the sounds of language, which affects how the child makes themselves understood, how they learn to read and write, and how they feel around others.

The good news is that phonological disorders respond very well to speech therapy intervention, especially when identified early and addressed in a structured way, with appropriate exercises and family involvement.

With the right support, many children go from unclear speech full of substitutions to increasingly clear speech, gaining confidence to participate, ask questions, play, and learn.

If you recognize several of the signs described in this article, don't expect the phonological disorder to "disappear on its own." Seek guidance in speech therapy, consider the flexibility of online speech therapy when it makes sense, and incorporate daily routines with the help of resources such as language delay, dyslalia, dyslexia, and childhood speech problems. How to do speech therapy at home, to transform every conversation into an opportunity for development.