The association between delayed tracking and larger genetic influence is driven mostly by reduced primary effects (influences common to performance and attainment), not secondary effects¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 2022 · 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? Differences between immediate and delayed tracking stem mostly from variance components common to performance and attainment. → Antonie Knigge 2022
Evidence¶
Antonie Knigge 2022¶
Antonie Knigge, Ineke Maas, Kim Stienstra, Eveline L. de Zeeuw and Dorret I. Boomsma. (2022). Delayed tracking and inequality of opportunity: Gene-environment interactions in educational attainment. npj Science of Learning 7:6. https://doi.org/10.1038/s41539-022-00122-1
q2 · i? · associational · r2
Bivariate Cholesky ACE decomposition splitting attainment variance into components common to performance and unique to attainment, for the N = 8847 twin sample. The article reports "for a major part driven by a reduction in primary effects"; common shared-environmental variance is 0.57 squared for immediate versus 0.04 squared for delayed tracking.
"the larger genetic and lower shared environmental effects associated with delayed tracking seem for a major part driven by a reduction in primary effects, and to a much lesser extent by a reduction in secondary effects."
Discussion¶
Related Claims¶
- Delaying tracking is associated with a larger genetic influence especially among low-performing students, supporting the compensation hypothesis (H2b) — related
- Delaying definite tracking is associated with a larger genetic influence and a lower shared-environmental influence on secondary educational attainment among Dutch twins — related
- A large share of the genetic influence on secondary-school attainment is due to genes that did not influence primary-school performance — related
- In a genetically informed twin study, the effect of shared family environment was substantially reduced among twins whose tracking was delayed until a later age — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
delayed-tracking-reduces-primary-effects |
title |
The association between delayed tracking and larger genetic influence is driven mostly by reduced primary effects (influences common to performance and attainment), not secondary effects |
description |
The association between delayed tracking and larger genetic influence is driven mostly by reduced primary effects (influences common to performance and attainment), not secondary effects |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2022 |
generated |
by process:wiki-ingest on 2026-10-27 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — antonie-knigge-2022 |
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