Claims

Student characteristics across cognitive, affective, and psychomotor domains show a medium-level overall relationship with K-12 academic achievement (r = 0.26)

Claim · All claims
Evidence · 1 study · quant-synthesis r3 · q3 · i2 medium
Currency · newest study 2026 · 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 i2 Across 71 effect sizes from 29 first-order meta-analyses, student characteristics correlate moderately with academic achievement (mean r = 0.26). → Erdem Cahit 2026

Evidence

Erdem Cahit 2026

Erdem Cahit, Kaya Metin, Polat Mustafa, Eğmir Eray. (2026). Thinking and feeling matter: a second-order meta-analysis of student characteristics across developmental domains and their effect on academic outcomes. BMC Psychology, 14, 919. https://doi.org/10.1186/s40359-026-05035-x

q3 · i2 · quant-synthesis · r3

Second-order meta-analysis synthesizing 29 first-order meta-analyses meeting R-AMSTAR quality criteria, yielding 71 effect sizes transformed to r and analyzed with a random-effects model in CMA 2.0. The mean effect size was "r = 0.26 (LL = 0.238 UL = 0.288)", interpreted as a medium-level relationship.

"The data set included 71 effect sizes. The effect sizes ranged between r = 0.46 and r = 0.01. The mean effect size was r = 0.26 (LL = 0.238 UL = 0.288)."

Discussion

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