Aptitude-treatment interaction: Assertions led low prior proficiency students to form significantly shorter posttest proofs than Messages¶
Claim · All claims
Evidence · 1 study · causalr2·q3
Currency · newest study 2020 · not yet checked against its sources · not reviewed by a person
Design limits · Mehak Maniktala 2020: the intervention came bundled with another change (read from the study by two models, 2026-10-27)
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? A two-way ANCOVA on posttest average solution length showed a significant Condition x Prior Proficiency interaction, with the Assertions-Low group producing significantly shorter proofs than the Messages-Low group. → Mehak Maniktala 2020
Evidence¶
Mehak Maniktala 2020¶
Mehak Maniktala, Christa Cody, Tiffany Barnes, Min Chi. (2020). Avoiding Help Avoidance: Using Interface Design Changes to Promote Unsolicited Hint Usage in an Intelligent Tutor. https://arxiv.org/abs/2009.13371
q3 · i? · causal · r2
Posttest analysis of the same study (Assertions-Low n = 25, Messages-Low n = 16). The ANCOVA on average solution length found a significant Condition x Prior Proficiency interaction (F(1,100) = 4.983, p = 0.027) with no significant main effects; Table 2 reports means 13.33 vs 15.09 nodes. No standardised effect size is printed.
"We then performed the pairwise Tukey's Honest Significant (HSD) test for multiple comparisons and found a significant difference ( p = 0.033) between the Assertions-Low and Messages-Low groups, showing that the Assertions-Low group formed significantly shorter proofs on the posttest than the Messages-Low group."
Discussion¶
Related Claims¶
- Assertions led low prior proficiency students to complete the posttest significantly faster than Messages — related
- Assertions significantly increase unsolicited hint usage (justification and needed rates) over Messages for students regardless of prior proficiency — related
- For low prior proficiency students, unsolicited hint usage rates correlate negatively with posttest solution length, while hint frequency does not correlate — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
assertions-low-proficiency-shorter-posttest-proofs |
title |
Aptitude-treatment interaction: Assertions led low prior proficiency students to form significantly shorter posttest proofs than Messages |
description |
Aptitude-treatment interaction: Assertions led low prior proficiency students to form significantly shorter posttest proofs than Messages |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2020 |
generated |
by process:wiki-ingest on 2026-10-27 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — mehak-maniktala-2020 |
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