In predicting the change in achievement from 3rd to 4th grade, IQ is positively and study habits negatively associated with change, together predicting 12%¶
Claim · All claims
Evidence · 1 study · associationalr2·q3·i1small
Currency · newest study 2020 · not yet checked against its sources · not reviewed by a person
Subclaims¶
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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 i1 Mean achievement declined significantly from 3rd (mean = 7.80) to 4th grade (mean = 7.57), with a small effect size (Cohen's d = .236). → Alberto Quilez-Robres 2020
Evidence¶
Alberto Quilez-Robres 2020¶
Alberto Quilez-Robres, Alejandro González-Andrade, Zaira Ortega and Sandra Santiago-Ramajo. (2020). Intelligence Quotient, short-term memory and study habits as academic achievement predictors of elementary school: a follow-up study. https://doi.org/10.1016/j.stueduc.2021.101020
q3 · i1 · associational · r2
T-test of related samples comparing 3rd-grade (mean = 7.80, SD = .91) and 4th-grade (mean = 7.57, SD = 1.03) achievement. The article reports t (1,71) = 3.759, p <.001, and "The Cohen’s d was .236, which indicates a small effect size."
"The re sults showed a significant difference, displaying a lower mean in the 4th grade (t (1,71) = 3.759, p <.001). The Cohen’s d was .236, which indicates a small effect size."
Discussion¶
Related Claims¶
- IQ and study habits, but not short-term memory, significantly predict 56-59% of academic achievement variance in 3rd and 4th grade elementary pupils — related
- IQ, short-term memory and study habits each correlate positively and significantly with academic achievement in both 3rd and 4th grade — reports the opposite
- Predictive weights of IQ, memory and study habits do not differ significantly between 3rd and 4th grade — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
iq-and-study-habits-opposite-effects-on-achievement-change |
title |
In predicting the change in achievement from 3rd to 4th grade, IQ is positively and study habits negatively associated with change, together predicting 12% |
description |
In predicting the change in achievement from 3rd to 4th grade, IQ is positively and study habits negatively associated with change, together predicting 12% |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2020 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — alberto-quilez-robres-2020 |
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