Students' experiment-evaluation strategies shifted toward correct CVS after instruction, though 23% still used incorrect strategies¶
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Evidence · 1 study · causalr1·q3
Currency · newest study 2000 · not yet checked against its sources · not reviewed by a person
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q3 i? The proportion of students applying the correct CVS evaluation strategy rose from 27% before instruction to 77% after, with the strategy distribution significantly different across tests. → Eva Erdosne Toth 2000
Evidence¶
Eva Erdosne Toth 2000¶
Eva Erdosne Toth, David Klahr, and Zhe Chen. (2000). Bridging Research and Practice: A Cognitively Based Classroom Intervention for Teaching Experimentation Skills to Elementary School Children. Cognition and Instruction, 18(4), 423–459. https://doi.org/10.1207/s1532690xci1804_1
q3 · i? · causal · r1
Strategy-fit analysis of the experiment evaluation test: each student's 10 answers were matched to hypothesized strategies (correct CVS, vary focal ignore others, vary any one control others, vary at least one ignore others, other). Correct-strategy use rose from 27% to 77%; distribution difference χ2(1, N = 77) = 32.6, p = .0001.
"prior to instruction, 27% of the students applied the correct, CVS strategy to evaluate experiments conducted by others, whereas after instruction, 77% of the students used this strategy."
Discussion¶
Related Claims¶
- Classroom expository CVS instruction dramatically increased fourth graders' CVS performance in individual hands-on interviews — related
- Domain knowledge about the ramps variables increased although instruction targeted only the domain-general CVS strategy — related
- Group CVS performance on classroom worksheets rose after instruction, and experimentation alone without instruction produced no significant gain — related
- Collaborative critique-and-redesign instruction shifts students from a value-free view of objectivity toward a procedural one — related
- Instruction increased students' ability to evaluate experiments designed by others on a paper-and-pencil test — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
evaluation-strategies-shift-to-cvs |
title |
Students' experiment-evaluation strategies shifted toward correct CVS after instruction, though 23% still used incorrect strategies |
description |
Students' experiment-evaluation strategies shifted toward correct CVS after instruction, though 23% still used incorrect strategies |
status |
review |
evidence_strength |
moderate |
newest_evidence |
2000 |
generated |
by process:wiki-ingest on 2026-10-18 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — eva-erdosne-toth-2000 |
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