Development
How does executive function relate to early reading in Brazil?
Open access · cc by · source: Europe PMC
Children rated as poor readers by their teachers show specific difficulties in working memory and mental flexibility, rather than in attention or impulse control.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
Core components of executive functioning, particularly working memory and cognitive flexibility, reliably predict early reading and mathematical achievements in childhood.
Evidence for the claim as stated.
Working memory capacity is a significant predictor of academic outcomes, specifically in mathematics and reading.
Evidence for the claim as stated.
The direct predictive value of response inhibition on reading achievement.
Evidence for the claim as stated.
Cognitive flexibility is closely linked to reading achievement and comprehension skills in school-aged children.
Evidence for the claim as stated.
Whether cognitive flexibility operates as a domain-general resource or requires domain-specific task design to predict outcomes. One study demonstrates that reading-specific cognitive flexibility using written words predicts reading comprehension, whereas domain-general picture-based flexibility does not. However, other reading research successfully distinguishes reader profiles using broader, domain-general cognitive flexibility metrics.
Evidence for the claim as stated.
Schoolchildren struggling with reading do not necessarily show deficits in selective attention; instead, their difficulties are more uniquely tied to working memory and cognitive flexibility.
Evidence for the claim as stated.
Open questions
Tensions this paper is part of
From concept pages' “where studies disagree.” Disagreement means the same question; scope means different assays, populations, or outcomes.
The direct predictive value of response inhibition on reading achievement.
Whether cognitive flexibility operates as a domain-general resource or requires domain-specific task design to predict outcomes. One study demonstrates that reading-specific cognitive flexibility using written words predicts reading comprehension, whereas domain-general picture-based flexibility does not. However, other reading research successfully distinguishes reader profiles using broader, domain-general cognitive flexibility metrics.
Study at a glance
- Design
- Case-control — Matched poor vs good readers on chronological age, sex, school type, domicile, and SES
- N
- N=106 · 53 poor readers (from screening N=355) matched to 53 good readers
- Population
- Brazilian schoolchildren classified as poor or good readers
- Outcome
- EF factor distinguishing poor vs good readers
Structured fields used in claim comparison tables when every cited study has a complete layer.
Inspect source passages
How does executive function relate to early reading in Brazil?
These passages occur verbatim in the stored paper text. They support the points listed below; they do not verify every statement in the explanation.
53 children identified as poor readers
The number of children identified as poor readers (from a total N = 355) was 53 (13%).
53 good readers used as a matched comparison group
These poor readers were matched for chronological age, sex, school type (private or public), domicile (Salvador or São Paulo) and socioeconomic status with 53 children presenting satisfactory reading scores of 6 or above in both decoding and reading comprehension.
Key findings
The results showed that only the combined working memory and cognitive flexibility factor significantly distinguished the two groups. Good readers scored higher on this factor than poor readers, whereas the groups performed similarly on measures of selective attention, response inhibition, and interference suppression. This cognitive factor successfully categorized 61.3% of the students into their correct reading groups.
Methodology
Researchers selected 53 children classified as poor readers by their teachers and matched them with 53 good readers from typical classrooms in Brazil. The children completed 12 tasks assessing working memory, cognitive flexibility, inhibition, and selective attention. The researchers then analyzed which cognitive components distinguished the two reading groups.
Limitations
The study relied entirely on subjective teacher ratings of reading performance rather than standardized tests, which may introduce classroom bias. Additionally, because the study is cross-sectional, it cannot prove that working memory deficits cause reading struggles. Finally, the findings may not apply to clinical populations, as children with diagnosed learning disorders were excluded from the study.
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