Procedural Memory Deficits in Preschool Children with Developmental Language Disorder in a Spanish-Speaking...

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Neuroscience

Background:

• Developmental Language Disorder (DLD) affects language acquisition in children.
• Procedural learning, a type of implicit learning, is crucial for skill acquisition.
• The procedural deficit hypothesis (PDH) posits a link between procedural learning deficits and DLD.

Purpose of the Study:

• To compare procedural learning skills in Spanish-speaking preschoolers with DLD versus typically developing (TD) peers.
• To investigate the role of procedural memory in language development within the Spanish context.

Main Methods:

• Utilized the serial reaction time (SRT) task to assess procedural learning.
• Participants included 30 children with DLD and 30 TD children (ages 4-4 years, 11 months).
• Measured reaction time (RT) and accuracy across sequential and random task blocks.

Main Results:

• Children with DLD exhibited significantly longer RTs and lower accuracy across all blocks.
• TD children demonstrated expected performance improvements in sequential blocks and decrements in the random block.
• No evidence of implicit learning was observed in the DLD group via the SRT task.

Conclusions:

• Findings suggest a procedural learning deficit in Spanish-speaking children with DLD.
• Results support the procedural deficit hypothesis (PDH) by linking language impairments to procedural memory deficits.
• The study highlights potential implications for understanding DLD within the Spanish linguistic context.