D.Ed. Special Education (HI) Notes –Paper No 5 FUNDAMENTALS OF SPEECH AND SPEECH TEACHING, Unit 3: Development of speech

Table of Contents

3.1 Stages of development of speech in children with normal hearing (typically developing children)

Introduction to Speech Development in Typically Developing Children

Speech development is a gradual and systematic process that begins from birth and continues through the early years of a child’s life. In children with normal hearing, speech development follows a predictable sequence, though individual variations are common. Speech development is closely connected with physical, cognitive, emotional, and social development. It begins with listening, then understanding, and gradually moves toward the use of spoken language.

Speech development can be observed through several stages, each marked by specific characteristics and milestones. These stages help in identifying whether a child is developing typically or may need support.

Pre-linguistic Stage (Birth to 12 Months)

This is the foundation stage of speech development. Although babies do not produce real words during this period, it plays a crucial role in preparing for future speech.

0 to 2 Months – Reflexive Vocalization

The baby makes reflexive sounds like crying, coughing, burping, and fussing.
These sounds are involuntary and are not intended to communicate.
The baby also begins to react to sounds in the environment.

2 to 4 Months – Cooing and Comfort Sounds

The baby starts making vowel-like sounds such as “oo,” “ah,” and “ee.”
These are called cooing or gooing sounds.
The child also shows pleasure by smiling and making soft sounds in response to familiar voices.

4 to 6 Months – Vocal Play

The baby starts experimenting with pitch, loudness, and sounds.
Babbling begins with repetitive consonant-vowel sounds like “ba,” “ga,” “ma.”
This period is known as marginal babbling.

6 to 10 Months – Canonical Babbling

The child produces repeated consonant-vowel syllables like “baba,” “dada,” “mama.”
These are not yet meaningful words but are important building blocks of speech.

9 to 12 Months – Variegated Babbling and Jargon

The baby combines different syllables like “baga,” “mada.”
Jargon or speech-like babbling with rhythm and intonation appears.
The child may say their first meaningful word by around 12 months.
They start to understand simple words like “no” and “bye-bye.”

Single Word Stage (12 to 18 Months)

This stage marks the beginning of meaningful speech.

The child begins using single words to refer to objects, people, or actions.
These words are often simplified versions of adult words (e.g., “ba” for ball, “wa” for water).
Vocabulary grows slowly, from around 3–5 words at 12 months to about 50 words by 18 months.
Words are usually nouns or important daily actions.
The child uses speech to request, label, and gain attention.
Gestures and vocalizations are still used along with spoken words.
Understanding (receptive language) is much more developed than speaking (expressive language).

Two-Word Stage (18 to 24 Months)

This is an important transition stage in speech development.

The child starts combining two words to form basic phrases or mini-sentences.
Example: “more milk,” “mama go,” “doggy run.”
These combinations usually follow a logical order, such as noun + verb or adjective + noun.
Vocabulary expands rapidly—often called the “vocabulary explosion.”
The child can have up to 200–300 words by the end of this stage.
Pronunciation is still developing and may not be very clear.

Early Multi-word Stage (24 to 36 Months)

The child’s speech becomes more complex and easier to understand.

The child starts forming short sentences with 3–4 words, such as “I want toy,” “go park now.”
Grammar begins to appear, including simple verb forms, plurals, and prepositions.
Pronouns like “I,” “me,” “you” start to be used.
The child begins to ask questions, often using rising intonation (“Go home?”).
By 3 years, a child may have a vocabulary of 500 to 1000 words.
Speech becomes more intelligible to unfamiliar listeners (about 75% clarity).

Later Multi-word Stage (3 to 5 Years)

In this stage, the child’s speech undergoes significant development. They begin to communicate more fluently, with clearer pronunciation and more accurate grammar.

3 to 4 Years

The child starts speaking in full sentences with 4–6 words.
Example: “I want to go to the market.”
Vocabulary expands rapidly to 1000–1500 words or more.
The child can describe events, share stories, and express needs and feelings.
Question forms become more complex: “Why is the baby crying?”
Grammar becomes more accurate with the use of regular past tense verbs (“played,” “jumped”), plurals, and articles (“a,” “the”).
The child begins to use conjunctions like “and,” “but,” and “because.”
Pronunciation is clearer, and speech is understood by most people, even strangers.
They start using different sentence types: commands, questions, and statements.
They begin to understand and use “who,” “what,” “where,” and “why” questions properly.

4 to 5 Years

Sentences become longer (6 or more words) and more grammatically correct.
Example: “My brother is playing with his new toy.”
The child understands and uses future tense: “We will go to the zoo tomorrow.”
They start telling detailed stories with a beginning, middle, and end.
Speech becomes nearly 100% intelligible to all listeners.
They can use descriptive language (e.g., colors, sizes, feelings).
The child understands more complex instructions with two or more steps.
Example: “Pick up your shoes and put them in the cupboard.”
They can take turns in conversations and stay on topic.

Stage of Mature Speech (5 to 7 Years)

By this stage, a typically developing child with normal hearing speaks similarly to an adult in many ways, though some minor grammatical or pronunciation errors may still be present.

The child has a large vocabulary of more than 2000–2500 words.
They can form complex and compound sentences.
Example: “I wanted to go outside, but it started raining.”
The child speaks clearly and fluently, with correct pronunciation of most sounds.
Grammar is mostly accurate, including use of tense, singular/plural, articles, and prepositions.
They understand humor, sarcasm, and abstract ideas in simple form.
They can narrate stories, give explanations, and follow multi-step directions.
The child can maintain conversation with appropriate responses and can adjust speech depending on the listener.
They understand and use polite forms of language (e.g., “please,” “thank you,” “excuse me”).

Summary of Key Milestones in Speech Development

Age Range	Speech Characteristics
Birth to 1 year	Babbling, cooing, first words by 12 months
1 to 2 years	Single words, 50–100+ word vocabulary, starts combining words
2 to 3 years	Simple sentences, growing vocabulary, clearer speech
3 to 4 years	Longer sentences, better grammar, 75% intelligibility
4 to 5 years	Fluent sentences, story-telling, 100% intelligibility
5 to 7 years	Mature speech, complex sentences, effective communication

This typical speech development timeline helps parents, teachers, and speech-language professionals to monitor progress and identify any possible delays early. Speech development depends heavily on good hearing, exposure to rich language, interaction, and a supportive environment.

3.2 Prerequisites for normal speech and language development

Introduction

Speech and language development is a natural process, but it depends on several foundational conditions. These conditions are known as prerequisites, which are essential for a child to develop communication skills normally. If these basic requirements are not met, it may lead to delayed or disordered speech and language development. Understanding these prerequisites is important for early identification and proper intervention in children with hearing impairment or other developmental disabilities.

1. Normal Hearing Ability

A child must be able to hear well in order to learn speech and language. Hearing helps a child to listen, understand, and imitate sounds. Without proper hearing:

The child cannot hear speech sounds correctly.
The child cannot develop spoken language naturally.
The brain does not get the auditory input required for speech learning.

Even a mild or fluctuating hearing loss (like from frequent ear infections) can delay language development. Hence, early hearing screening and intervention are essential.

2. Proper Functioning of Speech Mechanism

The organs involved in speech production include:

Lungs (respiratory system) for breathing and air pressure.
Larynx (phonatory system) for voice production.
Tongue, lips, teeth, palate, and jaw (articulatory system) for sound shaping.
Nasal cavity (resonatory system) for nasal and oral sound balance.

If there are structural or functional problems in any of these organs, speech development will be affected. Examples include:

Cleft lip and palate
Tongue-tie
Weak oral muscles
Dental issues

3. Normal Brain Development and Cognitive Skills

The brain controls all speech and language functions. The child must have normal:

Cognitive abilities – to understand and produce language.
Memory – to remember sounds and words.
Attention and concentration – to focus on speech inputs.
Reasoning and problem-solving – to understand meanings and context.

Any brain damage (due to birth complications, trauma, or infections) or conditions like intellectual disability, cerebral palsy, or autism can interfere with normal speech and language development.

4. Exposure to Language in the Environment

Language is learned from the environment. The child must get regular exposure to meaningful speech and communication from parents, caregivers, and peers.

Key aspects include:

Rich and interactive communication environment
Talking, reading, and playing with the child regularly
Responding to the child’s gestures and babbles
Encouraging the child to express needs and feelings

Children who are not spoken to frequently or who grow up in a language-deprived environment often show delayed speech.

5. Normal Emotional and Social Development

Emotional bonding and social interaction are key for communication development. A child must feel:

Safe, loved, and emotionally supported
Motivated to communicate with others
Interested in social interaction and imitation

Children who experience emotional neglect, lack of attachment, or social isolation (e.g., children raised in institutions without caregivers) may have delayed or disordered language.

Conditions like autism spectrum disorder also affect the social interest of the child and thus hinder speech development.

6. Normal Intellectual Development

A child’s intellectual ability must be within the normal range for appropriate speech and language learning. Language requires the ability to:

Understand meanings
Organize thoughts
Form sentences
Use grammar rules

Children with intellectual disabilities may have delayed milestones in both understanding and expression of language.

7. Intact Sensory and Motor Systems

Other sensory functions like vision and tactile sensation, along with fine motor control, support speech development.

For example:

Vision helps in understanding gestures, facial expressions, and lip-reading.
Tactile feedback supports sound production and articulation.
Motor coordination is needed to control tongue, lips, and breathing while speaking.

Deficits in these areas can slow down the learning of speech sounds and sentence formation.

8. Motivation and Interest in Communication

The child must have a natural desire to interact, express feelings, and be understood. This motivation pushes the child to try making sounds, saying words, and forming sentences.

If the child is passive, uninterested, or shy in social situations, or if the family discourages communication attempts, speech development can be negatively affected.

9. Parental and Family Support

Supportive family members play a big role in encouraging speech. Key roles include:

Engaging the child in conversation
Responding positively to communication attempts
Using clear, correct, and rich language
Avoiding negative reactions like teasing or punishment for speech errors

Families that provide a language-rich, emotionally secure, and encouraging environment contribute significantly to normal speech and language development.

10. Neurological Integrity

For normal speech and language development, the central and peripheral nervous systems must work properly. This includes:

Motor pathways that control the movement of speech muscles
Sensory pathways that allow hearing and feedback
Language areas in the brain such as Broca’s and Wernicke’s areas

Damage or immaturity in these areas due to birth injury, infections like meningitis, seizures, or other neurological conditions can lead to speech delay or disorders like apraxia or dysarthria.

11. Normal Developmental Milestones

Children usually follow a specific pattern in the development of speech and language skills. If a child misses early milestones, it may indicate a delay. Key milestones include:

Cooing by 6 to 8 weeks
Babbling by 4 to 6 months
First words by 10 to 12 months
Word combinations by 18 to 24 months
Short sentences by 2 to 3 years

Missing or deviating from these milestones is often the first sign of a speech or language disorder and must be evaluated early.

12. Adequate Physical Health

A child must be in good physical health to focus and participate in communication. Frequent illnesses, malnutrition, or chronic medical problems may:

Lower the child’s energy levels
Interfere with hearing and concentration
Affect brain development

Good health and nutrition provide the physical and mental energy needed for learning speech.

13. Appropriate Stimulation and Early Learning Experiences

Children learn best when they are actively engaged in different kinds of learning experiences. This includes:

Play-based learning
Storytelling
Music and rhymes
Conversations during routine activities

Children who are given age-appropriate toys, books, and learning opportunities tend to develop better speech and language skills.

14. Cultural and Linguistic Factors

The language a child learns depends on the culture, region, and family language environment. Children raised in bilingual or multilingual environments may:

Begin talking slightly later in each language
Mix vocabulary from different languages initially
Catch up with single-language speakers by age 5

It’s important not to confuse bilingual language development with speech delay unless other symptoms are present.

15. Absence of Psychological Barriers

Fear, trauma, or negative experiences related to speech (such as being laughed at or punished for incorrect speech) can lead to reluctance to speak or selective mutism.

A healthy psychological environment where the child feels free and safe to express themselves is essential for normal speech and language development.

16. Imitation and Modeling

Children learn language by imitating adults and peers. To develop proper speech:

The child must be exposed to correct models of speech.
Repetition of words and phrases must be encouraged.
Adults must demonstrate correct pronunciation and grammar.

If the child’s environment is filled with incorrect or limited language models, the child’s language skills will also be limited.

17. Opportunities for Social Interaction

Children need daily chances to interact with other people to practice and improve their speech and language. These opportunities can come from:

Family interactions
Playgroups and preschool
Community events
Sibling and peer interaction

Limited interaction (like excessive screen time or isolation) can negatively impact speech development.

3.3 Stages of development of speech in children with hearing impairment

Introduction
Speech development in children with hearing impairment differs from that of children with normal hearing. Hearing plays a crucial role in speech and language acquisition. When hearing is impaired, the normal feedback loop between hearing sounds and producing speech is disrupted. As a result, the stages of speech development are delayed or altered. Early identification and intervention play a significant role in improving speech outcomes for such children.

Let us understand the various stages of speech development in children with hearing impairment.

Pre-linguistic Stage (Birth to 12 months)

This stage includes the early development of communication before actual words are spoken. For children with hearing impairment, this stage may show certain delays or atypical patterns.

1. Reflexive Vocalizations (0 to 2 months)

In normal development, babies produce sounds like crying, coughing, and fussing.
Children with hearing impairment also produce these reflexive sounds, as they are not dependent on hearing.
However, the pitch and loudness may vary due to lack of auditory feedback.

2. Cooing and Gooing (2 to 4 months)

Typically developing infants begin to produce vowel-like sounds such as “oo”, “ah”, and “ee”.
Children with hearing impairment may show reduced frequency of these sounds or may not attempt cooing as frequently.
Their cooing may lack clarity and variety.

3. Vocal Play (4 to 6 months)

This includes loudness variations, pitch changes, and repeated sounds.
Infants with normal hearing enjoy producing sounds and hearing them.
Hearing-impaired infants may show less vocal play due to the lack of auditory reinforcement.
They may rely more on visual or tactile stimuli.

4. Babbling (6 to 10 months)

Normal infants produce canonical babbling (e.g., “ba-ba”, “ma-ma”).
This is an essential milestone for speech development.
In children with hearing loss, babbling may be absent, delayed, or limited.
They may produce only a few consonant sounds, and babbling may not become varied or complex.
Manual babbling (repetitive hand gestures) may be observed in deaf infants exposed to sign language.

5. Jargon Stage (10 to 12 months)

Children start using intonation patterns similar to adult speech, even without real words.
Hearing-impaired children may produce jargon, but often it lacks proper prosody or is limited in usage.

Linguistic Stage (12 months onwards)

This stage includes the actual use of meaningful words and development of spoken language. Hearing-impaired children face significant challenges during this period without proper intervention.

1. First Words (12 to 18 months)

Normally hearing children begin to speak their first meaningful words.
Children with hearing impairment may show delay in acquiring first words.
If unaided, many may not develop clear words at this stage.
With early hearing aid or cochlear implant use, some children may start developing spoken words, though pronunciation may be unclear.

2. Vocabulary Development (18 months to 2.5 years)

Normally hearing children show a vocabulary explosion during this period.
In children with hearing impairment, vocabulary growth is usually slower.
Many words may be mispronounced or replaced with gestures.
The child may rely heavily on visual cues, facial expressions, and signs.

3. Sentence Formation (2.5 to 4 years)

Typically developing children begin to use 2 to 4-word sentences.
Hearing-impaired children may not form full sentences unless they have access to auditory-verbal therapy, sign language, or hearing devices.
Grammar and sentence structure are usually affected.
They may use single words or short phrases with limited understanding of word order.

4. Advanced Speech and Language (4 years and above)

Normally hearing children start using complex sentences, tenses, and grammar.
Children with hearing impairment show delays in this area unless provided with consistent speech-language therapy.
Their speech may lack clarity, proper intonation, and fluency.
Common issues include: omission of word endings, limited use of plurals, misuse of tenses, and flat voice quality.

Influencing Factors in Speech Development of Hearing-Impaired Children
To understand the stages better, it is important to know the factors that affect these developments.

Degree and Type of Hearing Loss

Mild to moderate hearing loss may still allow some access to speech sounds.
Profound hearing loss greatly restricts auditory input, delaying speech development further.

Age of Identification and Intervention

Early diagnosis (within the first 6 months) and timely intervention can significantly improve outcomes.
The earlier the child receives amplification devices (hearing aids or cochlear implants), the better the chance for speech development.

Use of Amplification and Therapy

Consistent use of hearing aids or cochlear implants is essential.
Speech therapy helps in teaching sound production, word usage, and grammar.
Auditory-verbal therapy (AVT) focuses on listening and spoken language.

Mode of Communication Used

Some children may use only speech, some may use sign language, while others use a total communication approach (speech + signs + gestures).
The chosen method influences speech development pathways.

Parental Involvement

Active involvement of parents in language-rich interactions is crucial.
Reading, storytelling, and consistent communication promote better speech outcomes.

Speech Milestones in Hearing-Impaired Children with Early Intervention

With the advancement in hearing technology and early identification, many children with hearing impairment can achieve near-normal speech milestones. Below is a general outline of expected speech development after early use of hearing aids or cochlear implants (within the first year of life).

0 to 6 months after device fitting

Child responds to environmental sounds and speech sounds.
Begins to vocalize more often.
May show increased cooing and laughing.
Smiles when spoken to and may quieten or alert to sounds.

6 to 12 months after device fitting

Starts canonical babbling (repeating consonant-vowel combinations).
Recognizes own name and simple familiar words.
Begins using intonation and rhythm in vocalizations.
Reacts to spoken commands with visual cues.

12 to 18 months after device fitting

Produces first meaningful words.
Points to objects when named.
Uses speech to request or express needs, though not always clear.
May imitate sounds heard frequently.

18 to 24 months after device fitting

Vocabulary increases to 10–50 words.
Begins combining two words (e.g., “want toy”, “go car”).
Attempts more speech for communication.
Starts using pronouns and names of familiar people.

2 to 3 years after device fitting

Uses 2 to 4-word sentences.
Understands and uses many familiar words.
Answers simple questions.
Speech intelligibility improves for familiar listeners.

3 to 5 years after device fitting

Uses complete sentences.
Asks questions like “what”, “where”, “why”.
Tells short stories or explains simple events.
Begins using correct grammar and tense.

Note: These milestones are general guidelines and may vary depending on factors such as the type of intervention, frequency of therapy, and family involvement.

3.4 Factors influencing development of speech in children with hearing impairment

Introduction

Speech development is a complex process that requires the coordination of hearing, cognitive abilities, physical development, and social interaction. In children with hearing impairment, these areas are affected to varying degrees. The development of speech in these children is influenced by many interrelated factors. Understanding these factors is important to design proper intervention programs that help the child develop effective speech and communication skills.

Degree and Type of Hearing Loss

1. Degree of Hearing Loss
The severity of hearing loss plays a major role in speech development. Children with mild or moderate hearing loss may still be able to hear some speech sounds and may develop speech with fewer difficulties. However, children with severe or profound hearing loss are likely to have more difficulties because they cannot hear most speech sounds without amplification.

2. Type of Hearing Loss

Conductive hearing loss may have a lesser impact on speech development because it often can be medically or surgically treated.
Sensorineural hearing loss, especially if permanent, usually has a greater impact because it involves damage to the inner ear or auditory nerve, affecting clarity and quality of sound.
Mixed hearing loss includes both conductive and sensorineural components and can create a compounded effect on speech development.

Age of Onset and Identification

1. Age of Onset
Children who are born with hearing impairment (congenital) face more challenges in speech development compared to those who acquire it later (post-lingual). This is because they miss out on listening to speech during the critical early months of life, which are essential for natural speech and language learning.

2. Age of Identification
Early detection of hearing loss is crucial. If hearing impairment is identified and managed before 6 months of age, the child has a better chance of developing speech and language closer to their hearing peers. Late identification can lead to delayed speech milestones and poor language structure.

Use and Timing of Amplification

1. Hearing Aids and Cochlear Implants
Providing appropriate amplification (like hearing aids or cochlear implants) at an early age helps children access speech sounds. It allows their auditory system to receive stimulation, which is necessary for speech perception and production.

2. Timing of Amplification
The earlier the child is fitted with amplification devices, the better the outcomes. Delay in amplification results in delayed access to sound and missed opportunities for learning speech naturally.

Family Involvement and Home Environment

1. Parental Involvement
The role of parents is vital. Active involvement of family members in the child’s listening and speech activities encourages faster learning. Parents who regularly interact, talk, read, and sing to their child create a rich language environment.

2. Communication Patterns at Home
If family members use consistent communication modes (like oral, sign, or total communication) that suit the child’s needs, it supports better speech and language development. Mixed or unclear communication can confuse the child and delay development.

Cognitive and Intellectual Abilities

1. Normal Cognitive Development
Children with good cognitive abilities can learn and understand speech and language more effectively. They can grasp patterns, meanings, and rules of language faster, leading to better speech development.

2. Cognitive Delay or Disability
Children with hearing impairment who also have intellectual disabilities may face double challenges. Their understanding of language, memory skills, and learning ability may be limited, which slows down their speech development.

Availability and Quality of Early Intervention Services

1. Early Intervention Programs
Children with hearing impairment benefit significantly from early intervention services. These programs provide therapies and guidance to both children and their families to develop listening and speaking skills. Starting such services within the first year of life is ideal.

2. Quality of Services
The success of speech development also depends on how well early intervention services are planned and delivered. Services must be individualized, consistent, and provided by trained professionals like audiologists, speech-language pathologists, and special educators.

Mode of Communication Used

1. Oral Method
In this method, children are trained to use residual hearing through amplification devices and are taught to speak and lip-read. Children exposed to the oral method early and consistently may develop better spoken language skills.

2. Manual Method
Some children use sign language as their primary communication mode. While this may not directly develop oral speech, it supports language development, which is foundational to cognitive and social development.

3. Total Communication (TC)
This approach uses a combination of oral speech, sign language, gestures, lip-reading, and written language. TC supports the child’s overall communication, but depending on the emphasis given to speech in TC, it may or may not fully develop oral language skills.

4. Bilingual-Bicultural (Bi-Bi) Approach
In this approach, sign language is treated as the first language and written/spoken language of the region (like English or Hindi) is taught as a second language. While this method supports strong language foundations, speech development may vary depending on how much emphasis is placed on oral speech.

Motivation and Personality of the Child

1. Child’s Motivation
A child’s desire to communicate and connect with others plays an important role. Highly motivated children often make more effort to listen, imitate, and practice speaking.

2. Personality Traits
Children who are social, curious, and responsive tend to engage more in communication. Shy or less interactive children may not practice speech often, which can delay development.

Physical and Neurological Conditions

1. Additional Disabilities
If a child with hearing impairment also has other disabilities like cerebral palsy, visual impairment, or autism, speech development may be further affected. These conditions can impact the motor skills required for speech, cognitive abilities, and overall learning.

2. Oral-Motor Skills
Proper development of the muscles used in speech (like the tongue, lips, jaw) is important. Weakness or poor coordination in these muscles can affect articulation and clarity of speech.

3. Neurological Functioning
Damage or immaturity in the brain’s speech and language areas can delay speech development, even if hearing loss is managed.

Educational Environment and Teacher Support

1. Inclusive and Supportive School Setting
A school that is supportive, inclusive, and equipped with special educators and speech therapists can help children develop better speech skills. Classroom accommodations, small group instruction, and speech therapy sessions are beneficial.

2. Teacher Training and Attitude
Teachers who are trained in teaching children with hearing impairment and are patient and encouraging play a significant role. They can create a speech-friendly learning environment that motivates children to use and improve their speech.

Socioeconomic Status of the Family

1. Access to Resources
Families from higher socioeconomic backgrounds often have better access to healthcare, early diagnosis, hearing devices, speech therapy, and quality education. This directly influences the child’s opportunity to develop speech effectively.

2. Financial Limitations
Low-income families may struggle to afford hearing aids, cochlear implants, regular therapy sessions, or transportation to specialized centers. These limitations can delay intervention and reduce the frequency of support services, leading to poor speech outcomes.

3. Parental Education
Parents with higher levels of education are generally more aware of the importance of early intervention and are better able to understand and follow through with therapy guidance. Educated parents are also more likely to provide a language-rich environment at home.

Cultural and Linguistic Factors

1. Language Exposure
Children with hearing impairment need rich and consistent exposure to language—spoken or signed. If they grow up in multilingual homes where communication is inconsistent or confusing, speech development may be delayed.

2. Cultural Beliefs and Attitudes
In some communities, hearing loss may be misunderstood or stigmatized. Families may delay seeking help or may rely on non-scientific practices. Such delays affect the critical period for speech development.

Role of Technology

1. Hearing Assistive Technologies
Modern technology such as digital hearing aids, cochlear implants, FM systems, and speech training software can significantly support speech learning. These tools make sound more accessible and help in speech perception and practice.

2. Use of Mobile Apps and Online Tools
There are many educational apps and platforms that promote speech and language development through games, exercises, and visual-auditory materials. These can be especially useful when used under the guidance of a therapist or educator.

Consistency and Continuity in Therapy

1. Regular and Ongoing Support
Speech development requires regular practice and reinforcement. If therapy is inconsistent or discontinued too early, the child may regress or fail to improve. Long-term commitment is essential.

2. Collaboration Among Professionals
When audiologists, speech therapists, special educators, and parents work together as a team, the child receives consistent and targeted intervention. This collaborative approach leads to better speech outcomes.

Emotional and Social Environment

1. Emotional Well-being
Children who feel accepted and supported by their family and peers are more likely to develop confidence and willingness to communicate. A stressful or negative emotional environment can lower motivation and participation in speech activities.

2. Peer Interaction
Interaction with other children, both with and without hearing impairment, helps in learning language in social contexts. Children learn new words, sentence structures, and proper pronunciation through peer play and communication.

3.5 Language development in pre and post lingual children with hearing impairment

Understanding Pre-Lingual and Post-Lingual Hearing Impairment

Children with hearing impairment can be broadly classified based on the age of onset of hearing loss:

Pre-lingual children: These are children who acquire hearing loss before the development of spoken language, usually before the age of 2 years.
Post-lingual children: These children acquire hearing loss after they have already developed spoken language, typically after the age of 2 years.

The timing of hearing loss plays a very important role in language development. Hearing is a major channel for language learning. If a child is unable to hear properly during the critical period of language development, it can delay or distort their ability to learn and use spoken language.

Language Development in Pre-Lingual Children with Hearing Impairment

Lack of Auditory Experience

Pre-lingual children do not have early exposure to environmental sounds, speech sounds, and conversations. This lack of auditory input leads to:

Delayed language acquisition
Poor vocabulary development
Limited sentence structure and grammar
Difficulty in abstract thinking and higher-order language

Characteristics of Language in Pre-lingual HI Children

Delayed babbling or no babbling: Typically developing infants start babbling at around 6 months. Pre-lingual HI children often show limited or absent babbling.
Limited or absent spoken words: Due to no or reduced access to sound, these children do not develop spoken vocabulary unless early intervention is provided.
Poor syntax and grammar: They may use one-word or two-word sentences and lack use of proper word order.
Restricted vocabulary: They often use simple and functional words (e.g., ball, eat, go) but not complex or abstract words.
Limited expressive and receptive skills: They may not understand what is spoken to them, and they may find it difficult to express their thoughts.

Influencing Factors

Degree of hearing loss: Severe to profound hearing loss affects language development more.
Age of identification and intervention: Early diagnosis (before 6 months) and use of hearing aids or cochlear implants improves outcomes.
Parental involvement: Active and consistent parental participation in therapy and communication is crucial.
Use of alternate communication methods: Use of sign language or total communication may support better language learning in the absence of spoken input.
Quality of language exposure: Rich and meaningful interaction with caregivers influences vocabulary growth and grammar use.

Language Development in Post-Lingual Children with Hearing Impairment

Loss of Previously Acquired Language Skills

Post-lingual children already have a foundation of spoken language before the onset of hearing loss. They have an advantage over pre-lingual children because they:

Have experienced spoken language.
Have developed vocabulary, grammar, and conversational skills.
Can often lip-read and use residual hearing effectively.

Impact on Language After Hearing Loss

Language regression may occur if hearing loss is not managed properly.
Speech clarity may decline because of the inability to monitor their own voice.
Difficulty understanding others: Especially in noisy environments or group conversations.
Slower new vocabulary acquisition: Since new words are often learned through hearing, children may struggle to learn new terms after hearing loss.
Difficulty in abstract or academic language: School subjects like science, history, or literature may become harder without hearing support.

Strengths of Post-lingual HI Children

Better expressive language: They can usually speak fluently and with correct grammar.
Higher comprehension levels: They can understand spoken language better due to previous exposure.
More confidence in communication: Since they have had successful experiences with communication in the past.

Comparison between Pre-lingual and Post-lingual Children

Feature	Pre-lingual HI Children	Post-lingual HI Children
Onset of hearing loss	Before language development	After language development
Vocabulary	Very limited without early intervention	Better, already developed
Sentence structure	Poor, grammatically incorrect	Usually correct, may regress with time
Speech clarity	Poor articulation	Initially good, may decline without feedback
Comprehension	Low without support	Generally good
Language learning methods	Visual methods, signs, structured therapy	Auditory-oral methods, visual cues, support

Role of Early Intervention in Language Development

For both pre-lingual and post-lingual children, early identification and intervention are critical. Language outcomes depend on:

Timely use of hearing devices like hearing aids or cochlear implants.
Speech and language therapy focusing on auditory training, vocabulary building, and communication strategies.
Parental training to create a language-rich home environment.
Use of inclusive educational settings with support services like special educators and speech therapists.

Communication Approaches for Language Development

For children with hearing impairment—whether pre-lingual or post-lingual—various communication approaches can be used to support and develop language. The approach chosen depends on several factors such as the degree of hearing loss, the age of identification, family preferences, and the child’s overall development.

Auditory-Oral Approach

Focuses on using residual hearing through hearing aids or cochlear implants.
Encourages listening and spoken language development.
Emphasizes speechreading (lip-reading) as a support tool.
Suitable for post-lingual children and pre-lingual children with early intervention.

Auditory-Verbal Therapy (AVT)

Promotes spoken language through listening alone, without visual cues like lip-reading or signs.
Requires intensive, one-on-one therapy.
Encourages parents to be the primary language models.
Highly effective when started early in pre-lingual children with appropriate hearing aids or implants.

Total Communication (TC)

Combines different methods like speech, signs, fingerspelling, lip-reading, body language, and hearing aids.
Allows children to receive information through multiple channels.
Often used for pre-lingual children or those with additional disabilities.
Flexible and inclusive approach.

Manual Approach (Sign Language)

Uses sign language as the primary mode of communication.
Allows children to express themselves even if they cannot hear.
Supports cognitive and social development through accessible language.
Common in Deaf communities and schools that follow a bilingual-bicultural (Bi-Bi) model.

Bilingual-Bicultural (Bi-Bi) Approach

Treats sign language (such as Indian Sign Language – ISL) as the first language.
Teaches the written/spoken form of the regional language as a second language.
Emphasizes Deaf identity, culture, and community.
Mainly suited for children with severe to profound pre-lingual hearing loss.

Factors Influencing Language Development in Both Groups

Degree and Type of Hearing Loss

Children with mild to moderate hearing loss may still acquire oral language with support.
Those with profound loss often need additional support systems like sign language or cochlear implants.

Age of Onset and Identification

The earlier the hearing loss occurs (especially before language acquisition), the more impact it has on language.
Early diagnosis (before 6 months) and early intervention can significantly improve outcomes.

Age of Intervention and Amplification

Hearing aids or cochlear implants should be fitted as early as possible.
The “critical period” of language development is within the first 3 years of life.

Parental Involvement and Language Exposure

Active involvement of parents in daily communication, therapy, and decision-making promotes better language outcomes.
A rich language environment at home supports both receptive and expressive language.

Cognitive and Neurological Factors

Children with additional cognitive or developmental issues may experience more challenges in language learning.
Memory, attention, and processing skills also play roles in language acquisition.

Social and Educational Environment

Inclusive classrooms, peer interactions, and supportive teachers promote communication skills.
Access to speech therapy and resource centers helps children catch up with peers.

Challenges in Language Development Faced by HI Children

For Pre-lingual Children

Difficulty in understanding spoken words and instructions.
Delay in developing reading and writing skills due to poor language base.
Limited exposure to incidental learning (learning that occurs naturally by hearing conversations).
Struggles with abstract concepts and emotional expression.

For Post-lingual Children

Regression of previously learned language if hearing loss is not managed.
Difficulty in maintaining clear speech articulation.
Increased effort needed for listening and understanding in classroom settings.
Emotional and psychological stress due to communication gaps.

Strategies to Improve Language Skills in HI Children

Early and consistent use of amplification devices.
Regular speech-language therapy sessions tailored to the child’s needs.
Incorporating visual aids, gestures, pictures, and technology in teaching.
Engaging in daily routines with language-rich interaction.
Reading books aloud and encouraging storytelling.
Using apps and auditory training tools designed for hearing-impaired learners.

Disclaimer:
The information provided here is for general knowledge only. The author strives for accuracy but is not responsible for any errors or consequences resulting from its use.

PAPER NO 5 FUNDAMENTALS OF SPEECH AND SPEECH TEACHING

D.Ed. Special Education (HI) Notes – Paper No 5 FUNDAMENTALS OF SPEECH AND SPEECH TEACHING, Unit 3: Development of speech