Classroom-relativized delayed start shows stronger predictive power and model fit than raw minutes, especially for ELA outcomes¶
Claim · All claims
Evidence · 1 study · associationalr2·q2
Currency · newest study 2026 · not yet checked against its sources · not reviewed by a person · recheck by 2029: tool and model accuracy changes quickly
Subclaims¶
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q2 i? The relative delayed start metric (scaled within classroom) had larger effect sizes and fit improvements than raw delayed start minutes in both subjects. → Jordan Gutterman 2026
Evidence¶
Jordan Gutterman 2026¶
Jordan Gutterman, Ashish Gurung, Lee Branstetter, Kenneth Koedinger, and Vincent Aleven. (2026). Cross-Subject Predictive Validity for Learning Outcomes of Delayed Start Behavior. https://arxiv.org/abs/2606.25308 doi:10.48550/arxiv.2606.25308
q2 · i? · associational · r2
Model comparison across Table 2 regressions: relative delayed start effects were Math -.13 and ELA -.15 (both p<.001), with the ELA fit gain where "R2 increased by .02 and BIC declined by 21"; math gains were R2 +.01, BIC -14.
"The greatest improvement in model fit above the baseline model for relative delayed start was in ELA outcomes, whereR2 increased by .02 and BIC declined by 21; there were also improvements for the delayed start minutes metric (R2: +.01, BIC: -7)."
Discussion¶
Related Claims¶
- Delayed start during math practice predicts standardized ELA test performance (β=.10 SD, p<.001) — related
- Delayed start during math practice predicts standardized math test performance (β=-.07 SD, p=.02) — related
- Total time on task in the DLP positively predicts both math and ELA outcomes — related
- Sensitivity analysis finds outcome gains significant at cut-points below 5 minutes and beyond 13-15 minutes of delayed start in both subjects — related
- Early starters (<5 min delay) show greater outcome growth while chronic delayers (>13 min) show negative trends relative to regular starters — related
- Gaussian Mixture Modeling identifies two latent clusters of delayed start behavior, outperforming three-cluster and unimodal models — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
relative-delayed-start-stronger-fit |
title |
Classroom-relativized delayed start shows stronger predictive power and model fit than raw minutes, especially for ELA outcomes |
description |
Classroom-relativized delayed start shows stronger predictive power and model fit than raw minutes, especially for ELA outcomes |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2026 |
recheck_by |
2029 |
generated |
by process:wiki-ingest on 2026-10-10 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — jordan-gutterman-2026 |
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