Challenges in skill acquisition and memory retention in children with developmental language disorder

Area of Science:

• Cognitive Psychology
• Developmental Neuroscience
• Speech and Language Pathology

Background:

• Understanding memory retention in children with developmental language disorder (DLD) is crucial for enhancing knowledge of memory processes.
• Current research often overlooks long-term performance and non-sleep memory consolidation in younger children, a gap this study addresses.

Purpose of the Study:

• To compare long-term memory consolidation for declarative (object-location) and procedural (symbol-writing) tasks in 5-year-old children with DLD and typically developing (TD) peers.
• To examine the relationship between memory skills and grammatical/lexical abilities in these groups.

Main Methods:

• 23 children with DLD and 30 TD peers participated.
• Declarative memory assessed via an object-location task at 4 hours and 2 weeks post-training.
• Procedural memory assessed via a symbol-writing task at 4 hours and 2 weeks post-training.

Main Results:

• Children with DLD demonstrated significantly poorer declarative memory retention over time.
• Children with DLD showed lower overall accuracy on the procedural symbol-writing task.
• TD peers exhibited delayed procedural gains, while children with DLD did not.

Conclusions:

• Children with DLD exhibit atypical long-term declarative memory retention and procedural knowledge acquisition.
• Declarative memory correlated with lexical scores in both groups; procedural memory correlated with grammatical scores only in TD peers.
• Findings suggest the need for targeted interventions to support memory deficits in children with DLD.