Diagram-comprehension scores were already high before the treatment and showed no significant pre-to-post increase¶
Claim · All claims
Evidence · 1 study · designr2·q2
Currency · newest study 2010 · not yet checked against its sources · not reviewed by a person
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? Mean diagram-test scores rose slightly from pre-test to post-test but the difference was not significant. → Anders Bouwer 2010
Evidence¶
Anders Bouwer 2010¶
Anders Bouwer, Bert Bredeweg. (2010). Graphical means for inspecting qualitative models of system behaviour. Instr Sci 38:173–208. https://doi.org/10.1007/s11251-008-9083-4
q2 · i? · design · r2
Paper-based diagram-comprehension pre/post tests (DIA-A/DIA-B, counterbalanced) in the same 30-participant evaluation. Pre-test mean was "M = 67%, SD = 17.6%" and post-test "M = 73%, SD = 19.5%"; the article reports the difference was not significant and equivalence was not tested.
"The scores on the pre-test were already reasonably high ( M = 67%, SD = 17.6%). There was a slight increase from pre-test to post-test ( M = 73%, SD = 19.5%), but this difference was not significant."
Discussion¶
Related Claims¶
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Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
visigarp-diagram-prepost-null |
title |
Diagram-comprehension scores were already high before the treatment and showed no significant pre-to-post increase |
description |
Diagram-comprehension scores were already high before the treatment and showed no significant pre-to-post increase |
status |
review |
evidence_strength |
weak |
newest_evidence |
2010 |
generated |
by process:wiki-ingest on 2026-10-18 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — anders-bouwer-2010 |
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