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models of child language disorders
theories explaining how children acquire language and specific strategies to support language development
cognitive model
links language acquisition to broader cognitive development
mismatch model
language develops when a child encounters new info that doesn’t quite fit existing language knowledge but thinking about how it’s not necessarily because of the child, but the result of environment that child is in (doesn’t quite fit needs of the child).
categorical model
identifies language impairments into discrete types based on observed difficulties
identifies the best grouping to apply to a child who is not using language as expected for his age
specific disabilities model
looks at identifying language deficits without a known cause
individuals with language disorders differ in abilities relative to others, focuses on strengths and weaknesses
descriptive-developmental or communication-language approach
most commonly used model of child language as it relates to language disorders
focuses on practical social functions of language and how it develops in context
form, content, use
etiological model
underlying causes of a language disorder such as potentially resulting in neurological conditions or brain damage
categorizes children according to syndrome, condition, disorder (etiology)
cognitive model focuse
This model emphasizes the relationship between cognitive development and language acquisition
cognitive model key idea
Children's ability to think, remember, and understand concepts influences their language learning.
• For instance, better memory skills can help a child form stronger links between words and their meanings.
language disorders result from deficits in non-linguistic cognitive ability
cognitive model examples
A child who has developed the cognitive ability to understand object permanence (that an object still exists even when out of sight) may also be better able to learn and use words for that object
therapy may target a child’s working memory to improve their ability to process and recall spoken language
mismatch model focus
How environmental challenges impact an individual’s language
mismatch model key idea
Language learning is likely driven by environmental stimuli that aligns with the individual’s need
mismatch model example
A child with minimal exposure to print is less likely to recognize the significance of letters, potentially resulting
lack of structured routines can create a mismatch that negatively impacts language learning and development
categorical model focuse
• Classifying language difficulties into distinct types
syndrome or syndrome of behavior it accompanies
categorical model key idea
Language disorders can be categorized based on the specific area of language affected, allowing for more targeted interventions
categorical model examples
• Receptive Language Disorder – Difficulty understanding words, sentences, and directions.
• Expressive Language Disorder – Difficulty using words, sentences, and proper grammar.
• Pragmatic Disorder – Difficulty using language appropriately in social situations
specific disabilities model focus
•Identifying language impairments that are not attributed to other conditions; distinguishing traits or characteristics; a child’s specific strengths and weaknesses and abilities believed toi nfluence language development
individuals with language disorders differ in some abilities relative to other or how they show within child variation
specific disabilities model key idea
LD, Specific Language Impairment (SLI), describes a primary language disorder that is not a result of hearing loss, intellectual disability, or other neurological conditions.
distinguishing traits or characteristics; a child’s specific strengths and weaknesses and abilities believed toi nfluence language development
specific disabilities model example
child may struggle to learn and use language effectively without any known medical reason, impacting their speaking, listening, reading, and writing skills
descriptive-developmental or communication-language approach focus
Understanding language development in the context of the child's broader communication skills and social interactions
detailed description of child’s strengths and weaknesses across all domain areas of language
descriptive-developmental or communication-language approach key idea
This approach views language as a social tool and examines how children learn to use it effectively in various situations to achieve their communication goals.
child with a language disorder follow same developmental path as typical children just slower or at a significantly different rate
descriptive-developmental or communication-language approach example
Analyzing how a child's language use, including their gestures, tone of voice, and interaction patterns, supports their ability to make requests, ask questions, and connect with others.
etiological model focus
Identifying the underlying causes of language disorders
etiological model key idea
this model seeks to understand the biological, neurological, or environmental factors that lead to language difficulties
etiological model example
Identifying the genetic predisposition, brain injury, or medical condition (like a stroke) that might be causing a child to experience difficulties with speech or language.
samuel t. orton (1937)
a neurologist, credited with bringing awareness to developmental language disorder
language disorders are multifactorial
mcginnis (1956)
developed “Associative method” teaches children with learning disabilities
morley (1957)
instrumental in applying information on normal language development to the problem of treating children with language disorder
language disorders
persistent or persistent difficulties in acquisition and use of language across various domains
• A difficulty in understanding and using spoken or written language
• Potentially affects a person’s ability to communicate effectively
• Research has shown early identification/intervention can:
• Improve language skills
• Reduce the risk of academic and social difficulties
• Complex
• Involve a combination of factors, such as., genetic, neurological, and/or
environmental factors
• SLPs diagnose and treat
• Support academic, social, and professional success
key aspects of language disorders
Bloom and Lahey (1978) and Lahey (1988) framework for exploring language competencies.
• Form: syntax, morphology, and phonology
• Content: semantic
• Use: pragmatics
causes of language disorders
Co-occurring Conditions – Language disorders can co-occur with otherconditions
• Can make the language disorders more complex to diagnose and treat
• Ex. Attention-deficit/hyperactivity disorder (ADHD), Autism Spectrum Disorder (ASD), or Intellectual Disability
• Genetic factors – genetic component
• Researchers have identified specific genes that may be involved in language development
• May not be fully understood
• Neurological factors – neurological conditions; disrupts the brain’s ability to process and produce language
• Ex. Developmental brain abnormalities, Traumatic brain injury, Stroke, or degenerative diseases
• Environmental factors – Poverty, neglect, abuse can impact language development
• Ex. A child who experiences chronic stress or sleep deprivation
• Developmental factors – may experience a delay in language development that may or may not be related to other developmental delays
• can be temporary
comorbidity
language orders rarely occur in isolation→ comorbidity refers to a situation where a child may experience 2 or more disorders simultaneously→ independent causal origins or causally related
diagnosing a language disorder
1. Observations - observe the child’s language use and social communication skills in a variety of settings
2. Comprehensive Evaluation (Additional Assessments)– SLP may recommend additional assessments to rule out other conditions that
can impact language development
3. Diagnosis – Based on the results of the evaluation, the SLP will determine whether the child meets the criteria for a diagnosis of language disorder
4. Treatment Plan/Planning - If a diagnosis of language disorder is made, the SLP will develop a treatment plan tailored to the child’s specific needs and strengths
5. Intervention – appropriate teaching techniques, dynamic
assessment, evidence-based practice,
6. Follow up assessments/Progress Monitoring
developmental language disorder (DLD)
A language disorder not associated with a known etiology
when language challenges significantly interfere with social interaction, academic achievement, and or daily functioning
form linguistic characteristics of DLD
syntax, morphology
most consistently omit morphosyntactic markers of grammatical tense in spontaneous speech
• Errors in grammatical forms in older children are an indicator of a language disorder
content linguistic characteristics of DLD
Limited or poor vocabularies throughout development
• As children get older the problem becomes what they know about words
• (e.g., words with multiple meanings
use linguistic characteristics of DLD
pragmatics
• Can be seen as immature
• difficulty understanding and applying pragmatic rules
• Ex. Social conventions
diagnosis of DLD
development- a problem that arises in childhood → communication milestones
language- receptive and/or expressive → think of what is used to communicate (eg spoken or written)
disorder- a significant deviation from the typical developmental patterns→ both neutralist (test scores) and normative (functional assessment) criteria
consider control, culturally and linguistically diverse individuals
diagnostic issues in DLD
eligibility criteria- Consider a child’s language development relative to chronological age
•the child’s overall level or cognitive ability or “mental age”
•Individuals with Disabilities Education Act (IDEA Amendments of 1997, public law 105-17) stipulates that services be determined on an individual basis
subtypes- lack of agreement
range in severity or classification are often subjective
diagnostic cutoffs- •cutoff scores for eligibility are mandated by school districts
•Arbitrary
•Inconsistent profiles of language skills and deficits
diagnostic issues funcitonal impact
Functional impact
• ___________ position stresses that language
disorders must involve a significant deficit
relative to environmental expectations
(Tomblin, 2008)
• WHO International Classification of Disease—
10 (2004) stresses the importance of
evaluating the impact of disorder on everyday
well-being
brain structure and function
• Magnetic Resonance Imaging (MRI) – common method used to examine brain structure and function
• Functional Magnetic Resonance Imaging (fMRI) – used to identify regions of the brain that become active while performing language tasks
• Electrophysiological Measures (EEGs) – measure language processing in real time
• Researchers have reported subtle differences in the size of different brain regions
• i.e., the inferior frontal gyrus and the superior temporal gyrus
expressive language disorders
Difficulty with expressing oneself through speech or writing
May struggle with using appropriate grammar, vocabulary, or sentence structure
mixed receptive-expressive language disorder
• A combination of expressive and receptive language difficulties
• Difficulty with both understanding and using language effectively
• Difficulty with grammar, vocabulary, sentence structure, and cosmprehension
common language disorders in practice
1. Children with Developmental Language Disorders
1. Language impairments are the most salient
2. Children identified as having as having language-learning disorders
1. Co-existing literacy difficulties
3. Children with language disorders that are associated with or secondary to some other developmental disorder such as ASD or intellectual disorder (ID)
appraisal (assessment)
Collection of data from a variety of sources to describe the client’s condition
process of collecting information
reviewing case histories, conducting interviews, administering standardized tests, observing play and interaction and gathering input from various stakeholders, caregivers, and other professionals
diagnosis (assessment)
the assignment and labeling of the clinical condition by means of the interpretation of standardized tests, case history information, observation, and medical examination, often with some inference about its underlying cause
process of analyzing that info that we gathered to determine whether a language disorder is present
young children- interpreting results and identifying whether delays are within typical limits or indicative of a disarray- identify contributing factors (ex. hearing loss, medical conditionm, and role of medical condition)
assessment
• Decide whether the child has a significant impairment in language form, content, or use to describe the deficit in some detail relative to the normal developmental sequence of language acquisition, and to determine how this deficit will affect the child’s daily activities
broader ongoing process that includes both appraisal and diagnosis
involves data to establish a child’s baseline, setting, intervention goals, and monitoring change over time and devolves as the child develops
dynamic, not just one time
goals of assessment
to decide whether the child has a significant impairment in language form, content, and/or use
to describe that deficit in some detail relative to the normal developmental sequence of language acquisition
to determine how this deficit will affect the child’s daily activities (school, family, and social well-being)
to understand and convey how a child functions within the environment, given the individual profile of communicative strengths and weaknesses
screening for potential delays,
establishing baseline functions
identifying intervention goals
monitoring progres over time
key principles of assessments for young children
developmentally appropriate- match child’s age and stage
family-centered, involving caregivers as essential info
multiple sources of info for unstandardized tools, observations
behavioral and formal caregiver reports and play-based assessments to get a complete picture
culturally and linguistically responsive, avoid bias, and misinterpretation
general assesment principles
assessing communicative functioning
special ed programs focus on functional assessments
International Classification of Functioning Disability and Health (WHO)- provides a framework for describing individual’s health in relation to what they can do in a standard environment and in their actual environment
considers family priorities, cultural and linguistic diversity, and developmental appropriateness
goal- understand child’s communicative strengths and contexts
collaboration
helps you see the whole child with the full picture
referral, case review, and observation
collect referral info
case history
language or communication sample
low structure observations
helps form hypothesis about the child’s needs and determine which tools to select
mapping out the assessment plan
select tools based on child’s age or client’s age, developmental level, and referral question: so why are they being referred? are there speech concerns or language concerns?
integrate info from range of sources→ history, interview, hearing tests, vision assessment, neuromotor assessment, general developmental level
evaluate eligibility for services, including standardized testing
mapping out assessment plan pt 2
determine presenting problem, but consider related issues
construct series of assessment to suit client needs
order of administrations, what do first to build your board, how to incorporate caregiver input, and when to use structured versus a more naturalistic method to get as much info as possible
decide which tools and methods best match the child’s developmental level- ex standardized tests, play-based observation, or caregiver interviews
planned out activities to build rapport and maintain attention, be ready to adjust if child is fatigued
okay to change work to meet needs of client and where they need support
outline adjustments or modifications to meet the needs and ensure assessments are in function family centers- considering age range
why are we assessing?
screening identifies children at risk for DLD- does not characterize the nature and extent of difficulties (be aware of culturally and linguistically different backgrounds)
screening instrument properties
establishing baseline function
identifying goals for intervention
measuring change in intervention
collateral areas
areas and components/domains of language
form- syntax, morphology phonology
content- knowledge of basic concepts underlying language, semantic relations among words and clauses, understanding ambiguity and multiple meanings, understanding figurative language use
use- appearance of appropriate rang of communicative functions, discourse management, flexibility of language for different listeners and social situations, clarity, cohesion, and coherence in discourse
standardized tests (how are we assessing)
norm-referenced tests- developed by devising a series of items that are given to large groups of children with normal language development and then computing acceptable range of variation in scores for age range covered by test
compare a child’s performance to age
helpful for eligibility decisions
s
standardized test limits
can miss subtle or functional difficulties, especially in natural settings
fairness
being narrow item sampling
elicitation or nets that may not reflect spontaneous communication patterns (not natural)
standardizes tests (how are we assesing) pt 2
validity, reliability, diagnostic accuracy, standardization, measures of central tendency and variability, standard error of measurement
validity (standardized tests)
whether a test measures what it claims to measure
ex. does a receptive vocab test truly reflect a child’s comprehension of words? or is it confounded by attention or cultural factors?
ensure results are meaningful
reliability (standardized tests)
across readers or between different forms of the same test
give stable scores when the child’s abilities haven’t changed, consistent stable and repeatable results under similar conditions
diagnostic accuracy (standardized tests)
measures like sensitivity identifying true deposits so that the child does indeed have a language disorder
specificity- identifying true negative so identify that the child does not have a language disorder
high diagnostic accuracy- helps us correctly identify children who do and do not have language or have a languge disorder
specificity and sensitivity
standardization (standardized tests)
test was administered and scored the same away across a large representative group of children
establishes the norms we compare our clients to so whether it’s based off of same age, or same grade level
measures of central tendency and variability (standardized tests)
mean, media, and mode that shows center of data
standard deviation shows spread out scores and
in the normal way, these help us interpret where a child falls relative to peers
standard error of measurement (standardized tests)
no test score is exact
how much a score might vary due to measurement error
helps us interpret confidence intervals around a child’s score, avoiding over interpretation of small number differences
adding to credibility that’s obtained
uses (standardized tests)
to demonstrate a client is significant different from others
to establish eligibility for services
other methods of assessment
interviews, questionnaires, and developmental scales
can give valuable context but often lack standard scores to they’re not always used for eligibility
developmental scales- sample behaviors from a period of development, provide age-equivalent; not appropriate for eligibility
creiterion-referenced procedures (how are we assessing)
examine particular communication behaviors without comparison to other children; no eligibility determination
used when eligibility has already been established to- establish baseline function, identify goals for intervention
examine specific communication skills without comparing to norms
ideal- whole setting and progress monitoring ex language probes, elicited productions and structured analysis
eliminate specific error patterns and functional deficits in natural contexts that you wouldn’t otherwise pick up in standardized assessments
language comprehension and criterion refernced procedures
avoid overinterpretation
specify appropriate responses
elicited imitation
elicited production
structured analysis
integrated approaches
behavioral observations (how are we assessing)
used to sample a particular behavior- appearance, frequency, context/antecedents
use standard or clinician-created checklists or rating forms
development of reliable rating format
allows us to see communication in real time as it happens
ex. play, turn-taking, interaction styles, often uncovers needs not yet visible in formal testing settings
dynamic assessment (how are we assessing)
level of support needed for client to achieve goal is identified
test-teach-test- provide varying levels of support for communicative behavior; assess level needed for success
identifies error patterns and self-monitoring abilities
degree of modifiability of client behavior (stimulability)
preferred intervention style
works best for addressing some challenging skills a student may be having
curriculum-based assessment (how we are assessing)
examine how language supports or limits their access to the curriculum
bridge assessments to functional educational planning
formative assesment (curriculum-based assessment)
include informal ways to stimulate learning (ongoing)s
summative assessments (curriculum-based assessment)
includes structured and standardized assessment of school achievement (end of learning)
recommendations (integrating and interpreting assessment data)
is speech/language intervention warranted
statement for goals for intervention, based on assessment data
suggestions for methods to approach activities and reinforcers based on observations during assessment
reports (integrating and interpreting assessment data)
identify key info
examination of findings
behavioral observations
severity/progress
summary/concluding statementsda
data integration
combining scores, observations, caregiver input, and functional performance to create a coherent picture of the child’s communication