DD children show operation-specific hyperactivation: greater IPS, superior parietal lobule and fusiform activity during subtraction, while during addition only the right superior parietal lobule differs (lower in DD)¶
Claim · All claims
Evidence · 1 study (2 entries) · associationalr2·q3
Currency · newest study 2014 · checked against its sources 2026-10-20 (automated, 2 of 2 entries) · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q3 i? A significant Group × Operation interaction revealed greater DD activation in bilateral IPS, right SPL and left fusiform gyrus during subtraction relative to addition, with no group differences during addition (except right SPL). → Rosenberg-Lee 2014
q3 i? In cytoarchitectonically defined IPS ROIs, DD children did not differ from TD during addition (p = .569) but showed significantly greater activation during subtraction (p = .020). → Rosenberg-Lee 2014 (2)
Evidence¶
Rosenberg-Lee 2014¶
Rosenberg-Lee, M., Ashkenazi, S., Chen, T., Young, C. B., Geary, D. C., & Menon, V. (2014). Brain hyper-connectivity and operation-specific deficits during arithmetic problem solving in children with developmental dyscalculia. Developmental Science. https://doi.org/10.1111/desc.12216
q3 · i? · associational · r2
Whole-brain Group × Operation interaction analysis in the block-design fMRI study. The study found "children with DD showed greater activation in the bilateral IPS, right superior parietal lobule, and left fusiform gyrus during subtraction, compared to addition", with only right SPL differing during addition.
"Compared to TD children, children with DD showed greater activation in the bilateral IPS, right superior parietal lobule, and left fusiform gyrus during subtraction, compared to addition"
Rosenberg-Lee 2014 (2)¶
Rosenberg-Lee, M., Ashkenazi, S., Chen, T., Young, C. B., Geary, D. C., & Menon, V. (2014). Brain hyper-connectivity and operation-specific deficits during arithmetic problem solving in children with developmental dyscalculia. Developmental Science. https://doi.org/10.1111/desc.12216
q3 · i? · associational · r2
Four-way ANOVA over cytoarchitectonic IPS subdivisions (hIP1, hIP2, hIP3) with a significant Group × Operation interaction (F(34, 1) = 6.20, p = .018). Follow-ups showed "children with DD did not differ from TD children in their IPS response during addition problem solving (F(34, 1) = .33, p = .569)" but greater activation during subtraction.
"children with DD did not differ from TD children in their IPS response during addition problem solving (F(34, 1) = .33, p = .569), but did show significantly greater activation during subtraction problem solving (F(34, 1) = 5.95, p = .020)"
Discussion¶
Learner Variables¶
- Learning Disabilities and Developmental Differences — moderator: an instructional effect differs with it
- Operations and Place Value — predictor: learners who differ on it differ in outcomes
Related Claims¶
- Correct and incorrect subtraction trials produce similar robust brain activity in DD children, indicating aberrant activation is not driven by error processing — related
- DD children fail to disengage the default mode network during demanding arithmetic, showing aberrant coupling with task-positive IPS regions — related
- Children with DD show greater brain activation than TD children in parietal, occipito-temporal and prefrontal regions during both addition and subtraction — reports the opposite
- Children with developmental dyscalculia are disproportionately impaired on subtraction accuracy relative to addition, showing a significant group × operation interaction — related
- Arithmetic problem-solving performance improves over 1.2 years in children, with larger gains on standard addition than control problems — related
- Children with DD show hyper-connectivity, not reduced connectivity, between the IPS and fronto-parietal and default mode networks during arithmetic — related
- Children with DD show slower reaction times than TD children during arithmetic problem solving, with no operation-specific RT effect — related
- Individual records revealed contrasting specific disabilities within the same pupil across arithmetic operations — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
dd-subtraction-specific-parietal-hyperactivation |
title |
DD children show operation-specific hyperactivation: greater IPS, superior parietal lobule and fusiform activity during subtraction, while during addition only the right superior parietal lobule differs (lower in DD) |
description |
DD children show operation-specific hyperactivation: greater IPS, superior parietal lobule and fusiform activity during subtraction, while during addition only the right superior parietal lobule differs (lower in DD) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2014 |
source_checked |
2026-10-20 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
2 — rosenberg-lee-2014, rosenberg-lee-2014-2 |
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