Symbolic and nonsymbolic magnitude comparison follow different developmental trajectories, with symbolic comparison undergoing larger developmental improvements between kindergarten and grade 2¶
Claim · All claims
Evidence · 1 study · associationalr2·q3
Currency · newest study 2017 · 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.
q3 i? The two comparison skills developed differently over the three waves, with symbolic comparison improving more than nonsymbolic comparison. → Xenidou-Dervou 2017
Evidence¶
Xenidou-Dervou 2017¶
Xenidou-Dervou, I., Molenaar, D., Ansari, D., van der Schoot, M., & van Lieshout, E.C.D.M. (2017). Nonsymbolic and symbolic magnitude comparison skills as longitudinal predictors of mathematical achievement. Learning and Instruction, 50, 1-13. https://doi.org/10.1016/j.learninstruc.2016.11.001
q3 · i? · associational · r2
Repeated assessment of the same large sample in kindergarten, grade 1 and grade 2 on both comparison measures showed "symbolic and nonsymbolic comparison had different developmental trajectories; the first underwent larger developmental improvements." No effect size is printed in the available text.
"Results demonstrated that symbolic and nonsymbolic comparison had different developmental trajectories; the first underwent larger developmental improvements."
Discussion¶
Related Claims¶
- Nonsymbolic magnitude comparison is only moderately predictive of future mathematical achievement, and only in kindergarten — related
- Symbolic magnitude comparison is a robust and consistent longitudinal predictor of children's future mathematical achievement across kindergarten, grade 1 and grade 2 — related
- Symbolic magnitude comparison is a stronger longitudinal predictor of mathematical achievement than nonsymbolic comparison — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
different-developmental-trajectories-magnitude-comparison |
title |
Symbolic and nonsymbolic magnitude comparison follow different developmental trajectories, with symbolic comparison undergoing larger developmental improvements between kindergarten and grade 2 |
description |
Symbolic and nonsymbolic magnitude comparison follow different developmental trajectories, with symbolic comparison undergoing larger developmental improvements between kindergarten and grade 2 |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2017 |
generated |
by process:wiki-ingest on 2026-10-23 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — xenidou-dervou-2017 |
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