Related Experiment Video
Updated: Jul 18, 2026

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
Published on: June 25, 2019
Effect of "missing" information on fast mapping by individuals with vocabulary limitations associated with
1Communication Sciences & Disorders, Emerson College, Boston, MA 02116, USA. krista_wilkinson@emerson.edu
Abstract:
One phenomenon of language development is a dramatic increase in vocabulary size, driven by rapid word learning. For individuals with intellectual disabilities, the size of the lexicon often lags behind what would be expected both for CA and MA. I examined how well individuals with severely limited receptive vocabulary associated with intellectual disability retained a new word-picture map after a single exposure under conditions of varying difficulty. This study was a direct replication of a previous investigation with typically developing preschool children, enabling a direct comparison. Individuals with intellectual disabilities performed equally as well as control children in the initial exposure phase but poorer when asked to remember the initial map in the presence of other novel distracters or labels.
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