Claims

The three instruction items intercorrelate strongly enough to form an internally consistent scale, yet achievement is positively associated with two items and negatively with the third, so their common variance does not represent instructional quality

Claim · All claims
Evidence · 1 study · associational r2 · q2
Currency · newest study 2019 · 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? The three class-level instruction variables were strongly positively correlated across Swedish waves, with internal consistency comparable to the Instruction to Engage Students in Learning Scale, but achievement was positively associated with two items and negatively with the third. → Kimmo Eriksson 2019

Evidence

Kimmo Eriksson 2019

Kimmo Eriksson, Ola Helenius, Andreas Ryve. (2019). Using TIMSS items to evaluate the effectiveness of different instructional practices. Instructional Science. https://doi.org/10.1007/s11251-018-9473-1

q2 · i? · associational · r2

Discussion of the Swedish class-level correlations (Table 3, all significant at p < .001) showing the three items covary. The article's plausible interpretation is that what the items have in common does not represent instructional quality, so composite scales of such items are unwarranted.

"Nonetheless, achievement was positively associated with two items and negatively associated with the third one."

Discussion

Page metadata
Field Value
type claim
id intercorrelated-items-common-variance-not-quality
title The three instruction items intercorrelate strongly enough to form an internally consistent scale, yet achievement is positively associated with two items and negatively with the third, so their common variance does not represent instructional quality
description The three instruction items intercorrelate strongly enough to form an internally consistent scale, yet achievement is positively associated with two items and negatively with the third, so their common variance does n...
status review
evidence_strength moderate
newest_evidence 2019
generated by process:wiki-ingest on 2026-10-18
trust unverified — no one has confirmed this page's content
sources 1 — kimmo-eriksson-2019

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