Adults, but not children, show a P1 ERP amplitude difference between reversed and typical letters during early visual processing¶
Claim · All claims
Evidence · 1 study · causalr2·q3
Currency · newest study 2014 · not yet checked against its sources · not reviewed by a person
Subclaims¶
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q3 i? On the P1 component (100–150 ms), the group x condition interaction was significant; adults showed a significantly more positive-going amplitude for reversed than typical letters, whereas children showed no reliable difference. → Blackburne LK 2014
Evidence¶
Blackburne LK 2014¶
Blackburne LK, Eddy MD, Kalra P, Yee D, Sinha P, Gabrieli JDE. (2014) Neural Correlates of Letter Reversal in Children and Adults. PLoS ONE 9(5): e98386. https://doi.org/10.1371/journal.pone.0098386
q3 · i? · causal · r2
ERP letter reversal task with 12 adults and 12 children; mean amplitudes from posterior electrodes entered into repeated-measures ANOVA with group as between-subject factor. The P1 group x condition interaction was significant (F(1,22) = 5.19, p = .03); the adult condition effect was significant (F(1,22) = 6.96, p = .02), while children's Fs were all <0.2. No standardized effect size was printed in a form the article states cleanly, so no magnitude is reported.
"For the P1 component, adults had a significantly more positive going wave for reversed letters compared to typical letters than did children (group x condition interaction: F(1,22) = 5.19, p = .03, gp2 =. 1 9 ) . This interaction reflects the fact that adults showed a significantly more positive going amplitude for reversed compared to typical letters (F(1,22) = 6.96, p = .02, g 2 = .39), whereas children showed no reliable difference between these conditions on this component"
Discussion¶
Related Claims¶
- N170 peak latency is later in children than adults, and only adults show a latency difference between reversed and typical letters — related
- Adults, but not children, show a differential N170 response to typical versus reversed letters — related
- The N170 reversed-minus-typical amplitude difference correlates with the VWFA reversed-minus-typical activation difference across participants, but not within either group — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
p1-erp-reversal-effect-adults-not-children |
title |
Adults, but not children, show a P1 ERP amplitude difference between reversed and typical letters during early visual processing |
description |
Adults, but not children, show a P1 ERP amplitude difference between reversed and typical letters during early visual processing |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2014 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — blackburne-lk-2014 |
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