Old (English-borrowed) and newly calibrated Spanish item RITs differ negligibly, with correlations of 0.98 and no statistically significant paired t-test differences¶
Claim · All claims
Evidence · 1 study · designr2·q2
Currency · newest study 2020 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2023: 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? Paired sample t-tests retain the null hypothesis: there are no statistically significant differences between old and new Spanish item RIT parameters across item calibration status (XX only: p = 0.40; XX and 10: p = 0.28). → Wang 2020
Evidence¶
Wang 2020¶
Wang, S., & Li, S. (2020). Calibration of Spanish MAP Growth math tests. Portland, OR: NWEA. https://www.nwea.org/research/publication/calibration-of-spanish-map-growth-math-tests/
q2 · i? · design · r2
Paired sample t-test analysis of old versus new item RITs for the selected sample (Table 3.3), comparing "old and new item parameters across item calibration status". The XX-only pair (N = 2,762, mean difference -0.09) yielded t = -0.84, p = 0.40; the XX-and-10 pair (N = 3,900, mean difference -0.10) yielded t = -1.09, p = 0.28. No effect size is printed.
"All statistical test null hypotheses have been retained, and there are no statistically significant differences between old and new item parameters across item calibration status."
Discussion¶
Related Claims¶
- Adaptive testing explains why about one third of calibrated Spanish math items carry calibration status 10 — related
- Outlier rates in Spanish item calibration are extremely low, which the authors take as evidence of very high calibration quality — related
- Including or excluding calibration status 10 items in scoring has a negligible impact on Spanish student RIT scores for monolingual and bilingual students — related
- Rescoring with new item parameters changed average ability estimates negligibly, with new and original scores correlated above 0.99 — related
- Average on-grade and all-grade item difficulty estimates differ by less than 0.1 logit for MAP Growth items — related
- The Spanish math test population is predominantly Hispanic (about 78%), unlike the English math test population (about 15%), with implications for Spanish norms — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
spanish-item-rit-calibration-negligible-differences |
title |
Old (English-borrowed) and newly calibrated Spanish item RITs differ negligibly, with correlations of 0.98 and no statistically significant paired t-test differences |
description |
Old (English-borrowed) and newly calibrated Spanish item RITs differ negligibly, with correlations of 0.98 and no statistically significant paired t-test differences |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2020 |
recheck_by |
2023 |
generated |
by process:wiki-ingest on 2026-10-08 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — wang-2020 |
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