Recall of morphologically complex forms is affected by memory task but not dyslexia.

Area of Science:

• Cognitive Psychology
• Developmental Psychology
• Linguistics

Background:

• Investigating the relationship between morphological complexity and working memory capacity.
• Examining how different word types (base, inflected, derived) are processed in memory.
• Understanding potential differences in morphological processing in working memory between typically developing children, dyslexic children, and adults.

Purpose of the Study:

• To assess the impact of morphological complexity on working memory performance.
• To compare memory recall for base, inflected, and derived words across different age and reading ability groups.
• To determine if dyslexia is associated with specific difficulties in representing complex morphology within working memory.

Main Methods:

• Utilizing list recall tasks involving base, inflected, and derived words in Finnish.
• Comparing simple serial recall with complex working memory tasks (word recall + sentence verification).
• Testing 8-year-old typically reading children, dyslexic children, and adults.

Main Results:

• Typically reading children outperformed dyslexic children on memory and morphology tasks.
• Base words were recalled better than morphologically complex words (inflected and derived).
• Derived words showed better recall than inflected words in simple span tasks, but not complex ones.

Conclusions:

• Working memory performance for morphologically complex words is influenced by task demands.
• No evidence suggests dyslexia is linked to specific deficits in representing complex morphology in working memory.
• Morphological processing in working memory is task-dependent.