CCM showed adequate model-data fit for game log data, except for infrequent tasks 7 and 9¶

Claim · All claims
Evidence · 1 study (2 entries) · design r2 · q3
Currency · newest study 2022 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2025: 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.

q3 i? Observed total scores were similar to model-implied total scores, suggesting the CCM can fit the data. → Jiaqi Yu 2022 q3 i? Weighted and unweighted MAD values were less than .25 except those related to tasks 7 and 9. → Jiaqi Yu 2022 (2)

Evidence¶

Jiaqi Yu 2022¶

Jiaqi Yu, Wenchao Ma, Jewoong Moon, Andre R. Denham. (2022). Developing a Stealth Assessment System Using a Continuous Conjunctive Model. Journal of Learning Analytics, 9(3), 11–31. https://doi.org/10.18608/jla.2022.7639

q3 · i? · design · r2

Internal model evaluation comparing histogram of observed total scores with density plot of model-implied total scores (Figure 5). "The observed and model-implied total scores are similar, suggesting that the model can fit data."

"The observed and model-implied total scores are similar, suggesting that the model can fit data."

Jiaqi Yu 2022 (2)¶

q3 · i? · design · r2

Weighted and unweighted mean absolute deviation computed per task for both halves. "all values were less than .25, except those related to tasks 7 and 9" — task 7 unweighted MAD was 0.34 and 0.36 in the two halves.

"The values of MAD are on a scale of 0 to 1 and all values were less than .25, except those related to tasks 7 and 9, suggesting that the model can fit most data adequately."

Discussion¶

CCM-estimated skill profiles showed minor positive correlations with external pre- and post-test scores, ranging from .018 to .495 — related
Standard BKT fits Raging Skies pilot process data with acceptable RMSE and good accuracy under 10-fold cross-validation — related
Automated detectors of disengaged behaviors inferred from interaction-log data alone reached AUC over 0.8 for gaming and correlated 0.55 with observed off-task behavior — related

Page metadata

Field	Value
`type`	`claim`
`id`	`ccm-model-data-fit-adequate-except-tasks-7-9`
`title`	`CCM showed adequate model-data fit for game log data, except for infrequent tasks 7 and 9`
`description`	`CCM showed adequate model-data fit for game log data, except for infrequent tasks 7 and 9`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2022`
`recheck_by`	`2025`
`generated`	by `process:wiki-ingest` on `2026-10-09`
`trust`	unverified — no one has confirmed this page's content
`sources`	2 — `jiaqi-yu-2022`, `jiaqi-yu-2022-2`

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