Intervention-induced cortical thickness changes in Chinese children with reading disability.

Area of Science:

• Neuroscience
• Developmental Psychology
• Educational Psychology

Background:

• Reading disability (RD) affects children's literacy development.
• Previous interventions show reading improvements and brain changes.
• Specificity of brain changes and SES interactions with interventions require further study.

Purpose of the Study:

• Investigate intervention-specific brain changes in children with RD.
• Examine how socioeconomic status (SES) interacts with different reading interventions.
• Clarify neurocognitive mechanisms of phonological and morphological interventions.

Main Methods:

• Randomly assigned 67 Chinese children with RD to phonological intervention (PI), morphological intervention (MI), or waitlist (WL).
• Assessed reading skills, phonological awareness, and morphological awareness.
• Utilized neuroimaging to observe cortical thickening patterns.

Main Results:

• Both PI and MI improved reading skills.
• PI enhanced phonological awareness; MI improved morphological awareness.
• Intervention-specific cortical thickening observed: PI in right temporal gyri; MI in left occipital, parietal, and frontal regions.
• Lower SES correlated with greater reading improvement and brain changes in the PI group.

Conclusions:

• Phonological and morphological interventions engage distinct neurocognitive mechanisms in Chinese children with RD.
• SES significantly influences responsiveness to phonological intervention compared to morphological intervention.
• Phonological skills may be more sensitive to environmental influences than morphological skills.