Fast Mapping of Words in Event Contexts by Children with Down Syndrome

Robin S. Chapman · Elizabeth Kay‐Raining Bird · Scott E. Schwartz

86 citations0/0 files storedJournal of Speech and Hearing Disorders

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Language Development and Disorders Reading and Literacy Development Down syndrome and intellectual disability research

Abstract

Fast mapping of novel words for objects was compared in 48 children and adolescents with Down syndrome (ages 5:6-20:6), who were delayed in expressive language acquisition compared to mental age, and 48 normally developing children matched for mental age (chronological ages 2:0-6:0). Normal and Down syndrome groups did not differ in their ability to infer a connection between the novel word and referent (100% vs. 100%), to comprehend the novel word after a single exposure (83% vs. 73%), and to recall the location in which they hid the novel referent (83% vs. 75%). Nor did they differ in their ability to produce the novel word correctly (at least two out of three phonemes in order: 48% vs. 40%). When retested after an hour of other activity, only the production task showed a significant, and comparable, decrement. Comparing youngest and oldest quarters of each group showed improved memory for location in both, improved comprehension in the Down syndrome group, and improved production in the control group. Adults (n = 12), in contrast, performed perfectly on all tasks except the delayed word production. Neither intelligibility differences nor use of real word labels accounts for the failure to find a difference between groups. Fast mapping skills were unrelated to expressive language deficit in these children with Down syndrome.

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References

1978Acquiring a Single New Word 1987Fast Mapping in Normal and Language-Impaired Children 1985Child Meets Word

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2000Predicting Language Production in Children and Adolescents With Down Syndrome 1993Following the Child’s Lead When Teaching Nouns to Preschoolers With Mental Retardation 2008Word-Learning Abilities in Deaf and Hard-of-Hearing Preschoolers: Effect of Lexicon Size and Language Modality 2000Novel word acquisition in children with down syndrome 1998Fast Mapping and Exclusion (Emergent Matching) in Developmental Language, Behavior Analysis, and Animal Cognition Research 2004Fast Mapping of Words and Story Recall by Individuals With Down Syndrome 2009Exclusion Learning and Emergent Symbolic Category Formation in Individuals With Severe Language Impairments and Intellectual Disabilities 2015Syntactic comprehension and working memory in children with specific language impairment, autism or Down syndrome

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