Gains in critical-thinking competences from dialogic lessons did not come at the expense of Biology subject-matter knowledge¶

Claim · All claims
Evidence · 1 study · causal r? · q3
Currency · newest study 2008 · checked against its sources 2026-10-23 (automated, 1 of 1 entry) · 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.

q3 i? The higher scores on critical-thinking variables in the lessons were not at the expense of the subject-matter knowledge of Biology taught in those lessons. → Frijters 2008

Evidence¶

Frijters 2008¶

Frijters, S., ten Dam, G., & Rijlaarsdam, G. (2008). Effects of dialogic learning on value-loaded critical thinking. Learning and Instruction, 18(1), 66-82. https://doi.org/10.1016/j.learninstruc.2006.11.001

q3 · i? · causal · r?

In the same Biology-embedded lesson-series study, the authors report that higher critical-thinking scores co-occurred with retained subject-matter learning: the gains were "not at the expense of the subject-matter knowledge of Biology". No effect size or test statistic is printed in the available text.

"The higher scores on critical-thinking variables were not at the expense of the subject-matter knowledge of Biology taught in these lessons."

Discussion¶

Learner Variables¶

Critical Thinking — outcome: instruction changes it

Page metadata

Field	Value
`type`	`claim`
`id`	`critical-thinking-gains-not-at-expense-of-subject-knowledge`
`title`	`Gains in critical-thinking competences from dialogic lessons did not come at the expense of Biology subject-matter knowledge`
`description`	`Gains in critical-thinking competences from dialogic lessons did not come at the expense of Biology subject-matter knowledge`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2008`
`source_checked`	`2026-10-23`
`generated`	by `process:wiki-ingest` on `2026-10-23`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `frijters-2008`

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