Genetic factors underlying spelling accuracy at age 7 capture nearly all genetic variation in spelling accuracy at age 9¶
Claim · All claims
Evidence · 1 study · associationalr3·q2
Currency · newest study 2021 · not yet checked against its sources · 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.
q2 i? Age-7 spelling genetic factors captured 94% (SE = 0.09) of the genetic variation in age-9 spelling accuracy, with rg of 0.97 (SE = 0.05). → Chin Yang Shapland 2021
Evidence¶
Chin Yang Shapland 2021¶
Chin Yang Shapland, Ellen Verhoef, George Davey Smith, Simon E. Fisher, Brad Verhulst, Philip S. Dale and Beate St Pourcain. (2021). Multivariate genome-wide covariance analyses of literacy, language and working memory skills reveal distinct etiologies. npj Science of Learning 6:23. https://doi.org/10.1038/s41539-021-00101-y
q2 · i? · associational · r3
Stage 1 Cholesky GSEM of two spelling accuracy measures (ALSPAC NB instrument, ages 7 and 9). The article reports age-7 genetic factors capture "nearly all (94% with SE = 0.09)" of age-9 genetic variation, rg = 0.97 (SE = 0.05).
"genetic factors underlying spelling accuracy at age 7 years can capture nearly all (94% with SE = 0.09) of the genetic variation for spelling accuracy at age 9 years (Supplementary Table 11), with rg of 0.97 (SE = 0.05, Supplementary Table 12)"
Discussion¶
Related Claims¶
- Literacy, phonological awareness, oral language and PWM abilities share a large proportion of underlying genetic variation in unrelated youth — a broader claim this one bears on
- Non-word repetition (PWM) shows trait-specific genetic variance beyond the shared genetic factor — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
spelling-genetic-stability-age-7-to-9 |
title |
Genetic factors underlying spelling accuracy at age 7 capture nearly all genetic variation in spelling accuracy at age 9 |
description |
Genetic factors underlying spelling accuracy at age 7 capture nearly all genetic variation in spelling accuracy at age 9 |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2021 |
generated |
by process:wiki-ingest on 2026-10-26 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — chin-yang-shapland-2021 |
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