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CLD exam 1

(c)

QuestionAnswer
what is affected by language disorders (4) any of the 5 domains of language -listening -speaking -reading -writing
when is a LD considered 'secondary'? when it occurs as the result of another primary diagnosis ("Language Disorder associated with ASD") -hearing loss, fragile x, asd, brain injury)
can a LD occur in isolation yes (DLD/SLI), or in the presence of another disorder (comorbid with ADHD)
what is DLD a subset of the broader category of language disorders
prevalence of DLD 2019 7.5% in US (estimated over 5 million)
what aspects contribute to the variation in signs/symptoms of DLD -age -severity/level of disruption -language domains affected -stage of linguistic development
why is there no standard signs/symptoms of DLD there is no consistent presentation
hallmark features of FORM deficits (4) -errors in complex grammar (simplified grammar) -morphosyntactic omissions, lower MLU -weak phonological system -incomplete knowledge of grammar
hallmark features of CONTENT deficits (4) -delayed acquisition of first words -restricted vocabulary -difficulty w multiple meanings, figurative lang -word finding
what does a restricted vocabulary lead to common use of overextension
hallmark features of USE deficits (3) difficulty: -telling coherent narrative -understanding complex, long discourse -understanding abstract/ambiguous language
origin of DLD brain based, developmental disorder that runs in families -originates from birth or early in life, changes over time
why is DLD an understudied area there are multiple areas/pathways involved
brain areas impacted with DLD -brocas, basal ganglia, planum temporale
twin studies with SLI more commonly shared in monozygotic twins -phonological working memory deficits
percentage of children that have family history of SLI 50-70%
gene mutation suggested to be associated with SLI FOXP2- a single autosomal-dominant gene -rare
why is DLD multi-factorial in etiology there is no simple recessive/dominant inheritance
Created by: liz gelles
 

 



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