Varying Syntax to Enhance Verb-Focused Intervention for 30-Month-Olds With Language Delay: A Concurrent Multiple...

Area of Science:

• Child Language Acquisition
• Developmental Psychology
• Linguistics

Background:

• Children with language delay often exhibit limited verb vocabularies, hindering expressive language development.
• Typically developing children learn verbs more robustly with alternating argument structures compared to single argument structures.

Purpose of the Study:

• To investigate if 2.5-year-olds with language delay can learn verbs, such as 'spill,' when exposed to varying syntactic structures in a therapeutic setting.
• To explore the impact of argument structure variability on verb learning in toddlers with language delays.

Main Methods:

• A verb-focused treatment study employed a concurrent multiple baseline design with three toddlers (29-30 months) experiencing expressive language delay.
• Participants viewed action videos paired with sentences featuring varied argument structures for target verbs.
• Verb learning was assessed by observing participants' ability to demonstrate target actions pre- and post-treatment.

Main Results:

• Significant post-treatment gains in target verb learning were observed for verbs taught using varying argument structures.
• Analyses indicated a positive effect of syntactic variability on verb acquisition.

Conclusions:

• Learning verbs with diverse argument roles may strengthen the connection between a verb's lexical representation and its syntactic framework.
• Utilizing argument structure variability as an intervention strategy shows promise for enhancing verb learning in children with language delays and warrants further investigation in larger studies.