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Related Experiment Video

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Comparing the Frequency Effect Between the Lexical Decision and Naming Tasks in Chinese

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Published on: April 1, 2016

What is a word? Recognizing polymorphemic lexical items in DLI.

P Royle¹, G Jarema, E Kehayia

¹Université de Montréal, Montreal, Quebec, Canada.

Brain and Language

|August 6, 1999

Summary

Developmentally Language Impaired (DLI) francophones’ word recognition relies on word frequency, not morphological structure. This suggests DLI mental lexicons lack lexical features and organized word families.

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Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment

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Published on: June 25, 2019

Area of Science:

Psycholinguistics
Developmental Psychology
Neurolinguistics

Background:

Word recognition is crucial for language comprehension.
The mental lexicon organizes words based on various linguistic properties.
Developmental Language Impairment (DLI) affects language processing in children.

Purpose of the Study:

To investigate word recognition processes in francophone children with DLI.
To examine the role of word frequency and morphological transparency in DLI word recognition.
To understand the organizational principles of the mental lexicon in DLI.

Main Methods:

A visual lexical decision task was employed.
Participants included DLI francophones and typically developing controls.
The task involved presenting verbs to probe word recognition responses.

Main Results:

DLI participants demonstrated sensitivity to whole-word frequency.
Little to no morphological transparency effects were observed in DLI participants.
Control participants likely showed typical frequency and transparency effects (implied).

Conclusions:

The DLI mental lexicon appears organized by word frequency, not morphological families.
This suggests a lack of lexical features and morphological structure in the DLI mental lexicon.
Findings contribute to understanding language acquisition and processing in DLI.