Study Notes on Child Language Disorders

CHILD LANGUAGE DISORDERS OBJECTIVES

  • Differentiate elements of language including:

    • Phonology

    • Morphology

    • Syntax

    • Semantics

    • Pragmatics

  • Understand basic concepts of each element of language:

    • Morpheme: the smallest meaningful unit of language

    • Phoneme: the smallest unit of sound in speech

  • Explain the course of normal spoken language development.

  • Understand distinctions between different disabilities characterized by language disorder:

    • Specific language impairment (SLI)

    • Intellectual disabilities

    • Autism spectrum disorders (ASD)

  • Know the difference between language disabilities and cultural language differences.

  • Understand the definition and implications of a language disorder:

    • Language disorder: impairment in the ability to understand and/or use words in a social communicative context.

    • Characteristics include improper use of words, inability to express ideas, inappropriate grammatical patterns, reduced vocabulary, inability to follow directions.

  • Understand basic principles of formal, standardized language assessment.

  • Understand basic principles of informal language assessment.

KEY TERMS

  • Language

  • Linguistics

  • Lois Bloom

  • Margaret Lahey

  • Language Form

  • Language Content

  • Language Use

  • Phonology

  • Morphology

  • Free Morpheme

  • Bound Morphemes

  • Syntax

  • Semantics

  • Denotative Meaning

  • Connotative Meaning

  • Idioms

  • Pragmatics

  • Infant

  • Prelinguistic

  • Gaze Coupling

  • Vocalizations

  • Crying

  • Cooing

  • Babbling

  • Single Words

  • Verbalizations

  • Sound-to-Symbol Relationship

  • Onomatopoeia

  • Fast Mapping

  • Two-Word Combinations

  • Idioglossia

  • Metalinguistic Awareness

  • Written Language

  • Bilingualism

  • Simultaneous Bilingualism

  • Consecutive Bilingualism

  • Language Difference

  • L1 (first language)

  • L2 (second language)

  • Elective Therapy

INTRODUCTION

  • Language is a uniquely human process involving the sharing of information through a system of signs, sounds, and gestures.

    • The academic study of this process is known as linguistics.

    • Importance of language for communication, problem-solving, and knowledge synthesis.

  • Language disorders can significantly impact functioning and learning in children.

  • Definition and implications of language disorders:

    • Impairment can manifest as improper word usage, inability to express ideas, grammatical issues, and difficulty understanding language.

    • Concerns regarding language development are common among parents with preschool-aged children, prompting professional assessment.

TERMINOLOGY AND DEFINITIONS

  • Language complex with multiple domains:

    • Nonverbal, oral (listening/speaking), written (reading/writing).

  • Framework by Lois Bloom and Margaret Lahey (1978) includes:

    • Language form (phonology, morphology, syntax)

    • Language content (meanings of words and combinations)

    • Language use (pragmatics)

Language Form

  • Phonology: Knowledge of consonant and vowel sounds; the limited number of sounds can create an endless number of words.

  • Morphology: The study of morphemes, the smallest meaningful units in language, consisting of:

    • Free Morphemes: stand-alone words (e.g., "play", "safe", "elephant").

    • Bound Morphemes: need to be attached to free morphemes to convey meaning (e.g., in "playing", "unsafe", and "elephants").

  • Syntax: The rules for combining words into sentences; examples of correct and incorrect English structures, such as:

    • Correct: “He is running.”

    • Incorrect: “Running is he.”

Language Content (Semantics)

  • Refers to the meaning of words and how they can vary.

    • Denotative Meaning: Literal meaning (e.g., "mother" = female parent).

    • Connotative Meaning: Implied or associated meaning (e.g., feelings of love or security associated with "mother").

    • Usage of idioms representing nonliteral language elements (e.g., “raining cats and dogs”).

Language Use (Pragmatics)

  • Describes how language is employed in social contexts:

    • Purposes of communication (e.g., greetings, requests, information sharing).

    • Adapting language according to listeners or situations (e.g., talking to babies vs. adults).

    • Conversational rules (e.g., taking turns, topic introduction).

LANGUAGE DEVELOPMENT

Overview

  • Understanding normal developmental features is essential for identifying language disorders.

Infant/Toddler Language Development

  • Definition: The term 'infant' originates from Latin, meaning “without speech.”

    • Infants communicate prelinguistically (sounds and gestures).

    • Early interactions between infants and caregivers (gaze coupling) start as early as 3 months.

    • Stages of vocal development:

    • Crying: First vocalization indicating health status and needs.

    • Cooing: 2-4 months; vowel-like sounds in pleasurable states.

    • Babbling: 5 months onwards; production of syllable strings (both reduplicated and non-reduplicated).

    • Early words often include names of important people or objects they can interact with.

    • Infants typically comprehend around 50 words by 13 months but may only produce them around 20 months.

Preschool Language Development

  • Age 2-5 years shows rapid language development in morphology and semantics:

    • Expressive utterances increase significantly in length and complexity.

    • Children can follow more complex directions and create narratives by age 4-5.

    • Expressive vocabulary grows to 1,000-2,000 words by 5 years.

    • Language milestones are significant indicators of typical development.

School-Age Language Development

  • Vocabulary expands to 8,000-14,000 words by age 6.

  • Children should be able to construct complete sentences and understand nuances in language, leading to humor and wordplay.

  • Written language skills begin to develop alongside spoken language proficiency.

TYPES OF CHILD LANGUAGE DISORDERS

Characteristics

  • Language disorders manifest as deficiencies in language production and/or comprehension (spoken and written).

  • Estimated 7% of preschool and school-aged children experience significant language limitations.

Specific Language Impairment (SLI)

  • Definition: Difficulty with language that is not attributed to neurological or cognitive deficits.

    • Children may take longer to speak, often showing limited vocabulary.

    • Estimated prevalence is around 8% of 5-year-olds. Many also face reading difficulties later.

Intellectual Impairment

  • Defined by significantly subaverage intellectual functioning identified via IQ assessments (standard IQ calculation: IQ=100imesracMACAIQ = 100 imes rac{MA}{CA}).

    • Various degrees of impairment categorized by IQ ranges:

    • Mild: IQ 50-70

    • Moderate: IQ 35-49

    • Severe: IQ 20-34

    • Profound: IQ 0-19

  • Understanding that language acquisition for impaired children is variable and not a simple scaled-down version of typical development.

Late Talkers

  • Group of children aged 18-30 months with limited expressive vocabulary.

    • Typically developing in comprehension but lagging in expressive abilities, potentially requiring enrichment.

CURRENT THEORIES REGARDING CHILD LANGUAGE DEVELOPMENT AND DISORDERS

  • Four major theories of language acquisition:

    1. Behaviorist Theory: Language learned through imitation and reinforcement (Skinner, Piaget).

    2. Nativist Theory: Innate biological mechanisms for language acquisition (Chomsky); language acquisition device (LAD).

    3. Interactionist Theory: Combines behavioral and nativist elements, emphasizing social interaction for language learning.

    4. Statistical Learning Theory: Proposes children learn language by recognizing patterns and structures in their linguistic environment.

ASSESSMENT OF CHILD LANGUAGE DISORDERS

  • Classic Bloom and Lahey model highlights the need to assess forms, content, and use of language.

  • Assessment Components:

    • Case History: Gathering parental insights about the child’s language behavior and development history.

    • Standardized Testing: Involves uniform assessment tools; norms comparison to determine abilities across different populations.

    • Language Sampling: Non-standardized method to capture spontaneous communicative behaviors and analyze features like vocabulary and MLU.

Treatment of Child Language Disorders

  • Methodology may vary depending on the child's unique circumstances and abilities.

  • Emphasis on enhancing communication through multiple strategies, involving parents and teachers.

  • Treatment strategies may involve:

    • Adult-centered approaches: Direct instruction focusing on specific language skills.

    • Child-centered therapy: Naturalistic interaction that follows child engagement.

  • Effective techniques include self-talk, parallel talk, description, and language expansion, each encouraging child language development in authentic contexts.

CULTURAL CONSIDERATIONS

  • Addressing multilingualism and cultural diversity in assessments and interventions is increasingly crucial.

    • Culturally and linguistically diverse children may not exhibit language disorders; cultural differences must be recognized and respected.

    • Speech-language pathologists should strive to understand their clients' backgrounds and ensure assessments are culture-free and sensitive to dialects.

    • Issues may arise from using standardized tools designed for monolingual English speakers.

SUMMARY

  • Comprehensive understanding of language disorders, assessment, current treatment methodologies, and cultural implications is essential for supporting children with language challenges.