Do reading and spelling share orthographic representations? Evidence from developmental dysgraphia

Area of Science:

• Cognitive Science
• Developmental Psychology
• Neuroscience

Background:

• Spelling and reading are fundamental literacy skills relying on word knowledge.
• Dissociations in acquired and developmental deficits suggest independent cognitive mechanisms for spelling and reading.

Observation:

• Examined two children with developmental dysgraphia and spelling deficits affecting orthographic long-term memory.
• Assessed reading skills to determine if similar deficits were present.

Findings:

• Both children exhibited significant spelling deficits related to orthographic long-term memory processing.
• One child showed no evidence of a reading deficit despite extensive testing.
• Proposed an underlying difficulty specifically impacting the learning of orthographic representations for spelling.

Implications:

• Suggests that some components of lexical orthographic representation and processing develop independently for spelling and reading.
• Highlights the potential for targeted interventions for spelling difficulties in developmental dysgraphia.
• Informs understanding of the cognitive architecture underlying literacy acquisition.