DIF study finds most items in category A, with C DIF rare (~1%) except for the Native English/Bilingual group (6.66%)¶
Claim · All claims
Evidence · 1 study · designr2·q2
Currency · newest study 2021 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2024: tool and model accuracy changes quickly
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? Across DIF study groups, most items are classified as A, the highest percentage of C DIF occurs for the Native English/Bilingual group at 6.66%, and C DIF is rare (~1%) for the remaining groups. → NWEA 2021
Evidence¶
NWEA 2021¶
NWEA. (2021). Spanish MAP Growth Reading Technical Report. https://www.nwea.org/research/publication/spanish-map-growth-reading-technical-report/
q2 · i? · design · r2
Differential item functioning analysis (Chapter 8) comparing items across language background groups using Mantel-Haenszel procedures. The report summarizes that "Most items are classified as A" and C DIF is highest for the Native English/Bilingual group at 6.66% versus about 1% elsewhere.
"Overall, DIF results show the following three patterns: (1) Most items are classified as A, (2) the highest percentage of C DIF is the Native English/Bilingual group (6.66%), and (3) C DIF is rare for the remaining DIF study groups (~1%)."
Discussion¶
Related Claims¶
- English and Spanish MAP Growth Reading scales were statistically linked via a bilingual group design despite measuring similar but not identical constructs — related
- Most Spanish test items show negligible differential item functioning across gender and Hispanic–White comparisons — related
- Goodness-of-fit results indicate Spanish MAP Growth Reading constructs are at least tau-equivalent across language background groups — related
- DIF analysis finds mostly negligible or slight-to-moderate differential item functioning, with only one item showing moderate-to-large DIF favoring Asian over White participants — a narrower finding that bears on this claim
- DIF analyses indicate the vast majority of MAP Growth items show negligible differential item functioning across gender and racial/ethnic groups — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
spanish-map-reading-dif-patterns |
title |
DIF study finds most items in category A, with C DIF rare (~1%) except for the Native English/Bilingual group (6.66%) |
description |
DIF study finds most items in category A, with C DIF rare (~1%) except for the Native English/Bilingual group (6.66%) |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2021 |
recheck_by |
2024 |
generated |
by process:wiki-ingest on 2026-10-08 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — nwea-2021 |
Frontmatter is the page's machine-readable record — see the Schema & Guide.