The Relationship Between Word Learning and Executive Function in Preschoolers With and Without Developmental Language...

Area of Science:

• Child Development
• Neuroscience
• Linguistics

Background:

• Children with developmental language disorder (DLD) often exhibit challenges in language acquisition and cognitive skills.
• Executive functions are crucial cognitive processes supporting goal-directed behavior and learning.

Purpose of the Study:

• To investigate the relationship between executive functioning and novel word learning in preschoolers with and without DLD.
• To determine if executive function predicts word learning outcomes independently of group status (DLD vs. typically developing).

Main Methods:

• Forty-one preschoolers with DLD were matched with typically developing peers.
• Participants learned novel pseudowords referring to familiar and unfamiliar objects.
• Executive function was assessed using tasks measuring attention, memory, inhibition, and shifting; word learning was measured by production, recognition, and comprehension.

Main Results:

• Preschoolers with DLD demonstrated poorer performance on executive function and word learning tasks compared to controls.
• Both groups struggled more with learning pseudowords for familiar objects.
• Executive function significantly predicted word learning variance, with inhibition and short-term memory being key predictors.

Conclusions:

• Findings confirm executive function and word learning deficits in children with DLD.
• Preschoolers face unique challenges learning new words for familiar objects.
• A significant link exists between executive function and word learning in both children with and without DLD.