Limited Evidence of an Association Between Language, Literacy, and Procedural Learning in Typical and Atypical...

Area of Science:

• Cognitive Neuroscience
• Developmental Psychology
• Linguistics

Background:

• Procedural learning, the ability to extract patterns from sensory input, is crucial for language and literacy development.
• Impairments in procedural learning are hypothesized to underlie neurodevelopmental disorders like dyslexia and developmental language disorder (DLD).
• The procedural/declarative model predicts a relationship between procedural learning and language/literacy skills.

Approach:

• A meta-analysis of 39 studies with 2396 participants assessed the relationship between procedural learning (using the Serial Reaction Time task - SRTT) and language/literacy skills.
• The study examined this relationship in typically developing (TD) individuals, and those with dyslexia and DLD.
• Relationships were analyzed both continuously and at the group level.

Key Points:

• A significant but very small overall relationship was found between procedural learning and general language/literacy measures.
• This relationship was not significant at the group level for TD, dyslexia, or DLD groups.
• Contrary to the procedural/declarative model, no positive relationship was observed between procedural learning and language/literacy measures in the TD group.
• The magnitude of the relationship between procedural learning and grammar/phonology did not differ between TD and DLD groups.
• Similarly, no difference was found between TD and dyslexic groups regarding reading, spelling, and phonology.

Conclusions:

• The findings provide limited support for the procedural/declarative model of language and literacy acquisition.
• The study suggests that the Serial Reaction Time task may have limitations as a measure of procedural learning.
• Further research is needed to explore alternative measures and refine our understanding of procedural learning's role in neurodevelopmental language and literacy disorders.