Week 1 (Ch. 1 &3) Flashcards
ASHA definition of language disorder
An impairment in the “comprehension and/or use of
a spoken, written and/or other symbol system.
3 things a disorder may involve in any combination
The form of language (phonology, morphology, syntax) The content of language (semantics) The function of language in communication (pragmatics)
Define: Naturalist perspective
Impairment is characterized as a deviation from the average
level of ability achieved by a similar group of people
Naturalist perspective (does, Does not) help the clinician decide what differences in language behavior constitute an impairment or what level of impairment intervention is warranted
does not
Define: normative perspective
Considers impact of language impairment on the child’s
overall development and ability to function in everyday situations
Normative perspective States a language disorder exists when __________________
it interferes with the
child’s ability to meet societal expectations now or in the future
Deficits (do, do not) always occur together, although
impairments in one area may influence development in another
do not
Important to make a distinction between ______, _______, and _______ in order to highlight __________
order to
speech, language, and communication. The child’s most salient difficulty.
Very often impairments occur in the context of __________ with a _________
another developmental disorder, recognized label (ASD, Down’s).
Some of the other names for language problems
Specific language impairment, language delay, language disability,
language disorder, or developmental language disorder
Bloom and Lahey (1978) and Lahey (1988)- 2 major findings
Provided the framework for examining language
competencies
Suggested that language is comprised of three major
aspects: form, content and use
(All, Not all) of these features will be present in all children
with a diagnosis of DLD and the features that characterize a child at one age (may, may not) be very different to the features that stand out as the child gets older
Not all, may
Bloom and Lahey’s taxonomy of language: 3 major aspects
Form, content, use
3 key linguistic characteristics of disorders in form
Errors in speech production and poor phonological
awareness
Errors in marking grammatical tense
Simplified grammatical structures and errors in
complex grammar
3 key linguistic characteristics of disorders of content
Delayed acquisition of first words and phrases
Restricted vocabulary
problems finding the right word for known objects
3 key linguistic characteristics of disorders of use
Difficulties understanding complex language and
long stretches of discourse
Difficulties telling a coherent narrative
Difficulties understanding abstract and ambiguous
language
Mental age is an index of __________.
Developmental age
One way to describe children with developmental disability is
to say that ____________.
their developmental level is significantly lower than their chronological age
ASHA (2000) argued against cognitive referencing in making
decisions about eligibility of services. Why? Define cognitive referencing?
Comparing oral language skills to IQ to determine if language
intervention would benefit a student – make student eligible for
services in public schools
Sometimes language functioning can surpass cognitive levels
A Full Scale IQ score is comprised of what 2 things?
Verbal IQ and non-verbal IQ
Define: verbal IQ
measure of oral language skill
Define: non-verbal IQ
measure of the ability to carry out motor tasks
or analyze and solve problems using visual reasoning
When measuring IQ in children with language
impairments, best to use _______________.
cognitive tests that do not involve the production or comprehension of language
Nonverbal IQ is used as a measure of __________.
general intelligence in
individuals with language impairment
Nonverbal IQ is sometimes used to qualify or deny
services in individuals with ID. Why?
The assumption is that language skills cannot improve beyond
one’s language ability
In many states, SLPs cannot provide services to a student
when his/her________ and ________ are equivalent
nonverbal IQ and language ability
Longitudinal studies of children with language disorders
have reported a (drop, increase) in (verbal, nonverbal) IQ over time
drop, nonverbal
Degree of discrepancy between verbal and nonverbal
abilities does not necessarily predict a child’s __________
responsiveness to intervention
Denial of services to children because of depressed
(verbal, nonverbal) IQ scores (is not, is) consistent with the tenet of IDEA
nonverbal, is not
Standardized scores give us some useful information
about ______________, but sometimes we need more information to determine if speech-language services are needed
a child’s abilities relative to their peers
Tests with adequate psychometric data are (always, not always)
available for all age levels, for all _________, __________, or _________.
not always; age levels, language communities, or aspects of language/communication
The __________ stresses that a language
disorder must be big enough to be noticed by ordinary people
Normative position
Some problems are more readily apparent to non-specialists,
while others are more ______ and _________.
Subtle and easily missed
(A, no) single cause of DLD.
No
4 risk factors that co-occur to give rise to diagnosable conditions
Biological, cognitive, behavioral, environmental
Define: biological factors
Biological factors Differences in genetic risk and neurological structure and function
Define: cognitive factors
Cognitive factors Differences in perception and information processing
Define: behavioral factors
Behavioral features Overt differences in behavior
Define: environmental factors
Environmental factors External experiences that either increase risk of disorder or that
are protective in the face of biological risk
4 genetic factors of DLD
Primary DLD tends to run in families, suggesting
that genes may influence susceptibility to disorder
Cannot be sure of this because families also share
environments
Genes that have been implicated in DLD have also
been implicated in a host of other neurodevelopmental disorders, including Tourette syndrome, ADHD, dyslexia, ASD, epilepsy and ID
Partially overlapping etiologies may help to explain
the high rates of co-morbidity seen in developmental disorders
Human brain starts developing ______ and
continues to grow and develop throughout adolescence
in utero
Current neurobiological theory of DLD
Initially regional differences in the brain favor different types
of input for processing and computations
Smaller regions within these areas become more specialized
through activity-dependent processes that respond to environmental input
Increased cortical specialization and learning require
_________________ in order for effective communication within the brai
changes in the number and strength of connections between neurons
__________ eliminates weak or underused
connections and helps strengthen remaining connections
Synaptic pruning
Results in _____________ – specialized
neural networks that are more finely tuned to process particular inputs
functional specialization
Language in the adult brain is a great example of ________ and ___________.
Localization and functional specialization
In most individuals, language processing occurs in
the (right, left) hemisphere…this is called _____________.
left, left lateralized
As a result cortical structures that process language
tend to be larger in the (left, right) hemisphere than in (right, left) homologous structures
left, right
2 critical cortical areas for language
Frontal lobe and temporal lobe
Frontal lobe language functions
Inferior frontal gyrus includes pars opercularis and pars
triangularis…together they form Broca’s area
Important for speech motor planning needed for spoken
language
Temporal lobe language functions
Includes Heschl’s gyrus, superior temporal gyrus and the
planum temporale
Important for auditory processing and language
comprehension
5 things MRI studies of DLD find
as a group individuals with DLD show atypical patterns of
asymmetry of the language cortex (Leonard and Gauger
studies)
Abnormalities in white matter volume Cortical dysplasia
Additional gyri in frontal and temporal regions
Unusual proportions of anatomical structures implicated in
language processing
3 fMRI findings of brain function in DLD
Hugdahl et al. (2004) studied language processing in 5 Finnish
family members with DLD and 6 age-matched peers. The family members with DLD showed bilateral activation in the temporal lobes which was much weaker and more focal than
activations in the comparison group
Weismer et al. (2005) studied working memory abilities in 8
teenagers with primary DLD and 8 individuals with NL. The individuals with DLD exhibited hypoactivation in frontal and parietal regions and inferior temporal gyrus
Whitehouse and Bishop (2008) found that adults with DLD
showed reduced blood flow to the left hemisphere when engaged in language tasks
Language learning is remarkably robust in the face of _________________
impoverished language input
___________ factors alone cannot account for the
deficits that characterize DLD
environmental
Environmental factors can have an important role in
mediating _________ and ____________
the developmental course of the disorder, impact of the disorder on the child’s adaptation and wellbeing
Children from families with ________ have (slower, faster)
rates of language development relative to peers from __________ environments
low SES, slower, affluent
Relationship between ___ and _______
not straight forward
SES, language impairment
DLD in the context of _______ should alert clinicians
and educators to the need for ________ and ____________
Low SES, careful monitoring and language support
3 cognitive models of DLD
auditory processing, limited processing capacity, procedural deficits
Auditory processing model of DLD
Auditory deficits have been shown to be neither necessary nor
sufficient to cause DLD
Limited processing capacity model of DLD
Evidence for limited capacity system stems from poor
performance on tasks of working memory and phonological short term memory
Procedural deficits model of DLD
Children with DLD are impaired on measures of learning that
tap into procedural memory systems (important for rule based
learning such as grammar)
Children with Autism and DLD share ________________ (including _____ and ______)
language problems, vocabulary and grammar
Children with autism typically demonstrate 6 deviant features
that would not be regarded as typical at any age
Repetitive use of stereotyped phrases Unusual and exaggerated intonation Pronoun reversal
Idiosyncratic words
Echoing the speech of others Pragmatic skills
Skilled reading requires ______ and ______ …_______-based skills
reading accuracy and
reading comprehension; language
Individuals with ________ also have some oral
language difficulties
dyslexia
Poor comprehenders (good decoding, poor reading comprehension) have oral language weaknesses in \_\_\_\_\_, \_\_\_\_\_\_, and \_\_\_\_\_\_\_\_\_\_
vocabulary, grammar, verbal working memory
Many children with DLD end up having _____________
reading difficulties
4 purposes of intervention
1). Change or eliminate the underlying problem
Rendering the child a normal language learner
2). Change the disorder
Improve specific aspects of language behaviors by teaching
specific behaviors
3). Teach compensatory strategies
Rather than trying to make their language normal, the
clinician attempts to give them tools to function better with the deficits they have
4). Change the child’s environment
Try to influence the context in which a child must function