Word-learning trajectories influence long-term recall in children with developmental language disorder and typical...

Area of Science:

• Child language acquisition
• Developmental psychology
• Speech and language therapy

Background:

• Children with developmental language disorder (DLD) face significant challenges in word learning.
• Repeated spaced retrieval (RSR) is a promising intervention to mitigate these difficulties.
• Understanding the learning process within RSR is crucial for optimizing interventions.

Purpose of the Study:

• To analyze the unfolding of word learning in children with DLD and typical development (TD) using RSR.
• To investigate how learning trajectories predict long-term recall in these groups.
• To examine the relationship between immediate and spaced retrieval success.

Main Methods:

• Analysis of trial-by-trial learning data from three RSR studies involving children with DLD and TD.
• Fitting growth curves to immediate and spaced retrieval trial data.
• Utilizing individual word-learning trajectories to predict long-term recall.

Main Results:

• Both DLD and TD groups showed linear learning growth, even with learning breaks.
• Early success in immediate retrieval trials positively influenced subsequent spaced retrieval performance.
• Learning trajectories, including cumulative success and growth over time in spaced retrieval, predicted long-term recall.

Conclusions:

• Repeated spaced retrieval (RSR), enhanced with immediate retrieval trials, effectively promotes long-term word recall.
• The study provides insights into the learning dynamics within RSR for children with DLD.
• Individual learning patterns during RSR are key indicators of future recall success.