Inferring Word Class and Meaning From Spoken and Written Texts: A Comparison of Children With and Without...

Area of Science:

• Linguistics
• Developmental Psychology
• Education

Background:

• Developmental Language Disorder (DLD) affects language acquisition and comprehension.
• Understanding word meaning and class is crucial for reading and listening comprehension.
• Children with DLD often face challenges in language processing tasks.

Purpose of the Study:

• To assess the ability of children with DLD to infer word class and meaning from text.
• To examine variations in inference ability based on word class (noun, verb, adjective) and modality (listening, reading).
• To investigate whether children can utilize global and local contextual cues for inference.

Main Methods:

• Fourth graders with DLD and typical language development (TLD) participated.
• Participants listened to and read expository texts with missing words.
• Latent Semantic Analysis (LSA) evaluated the semantic fit of guessed words.

Main Results:

• The DLD group was 24% less accurate than the TLD group.
• Accuracy varied by word class (nouns > adjectives > verbs) but not modality.
• Children with DLD made more semantic errors and were less likely to use global cues effectively.

Conclusions:

• Children with DLD demonstrate reduced ability to infer word meaning from text, regardless of modality.
• Deficits in executive function and lexical semantic knowledge contribute to these difficulties.
• Vocabulary knowledge and executive functions like working memory and attention are related to inference performance in DLD.