Claims

Object manipulation in a visual representation significantly improves scores from post-test to retention test after two weeks of non-instruction

Claim · All claims
Evidence · 1 study · causal r? · q3
Currency · newest study 2002 · checked against its sources 2026-10-20 (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? Manipulation, operationalised by giving learners a visual representation in which geometrical objects could be manipulated, yielded significant results from post- to retention test. → Tessa Eysink 2002

Evidence

Tessa Eysink 2002

Tessa Eysink, Sanne Dijkstra, Jan Kuper. (2002). The role of guidance in computer-based problem solving for the development of concepts of logic. Instructional Science. https://doi.org/10.1023/A:1016018210897

q3 · i? · causal · r?

In the same 72-student experiment in Tarski's World, the manipulation variable was tested against a retention test administered after two weeks of non-instruction. The abstract reports significant post- to retention-test results; no effect size is printed.

"Manipulation, which was operationalised by giving the learners a visual representation in which geometrical objects could be manipulated, yielded significant results from post- to retention test."

Discussion

Page metadata
Field Value
type claim
id manipulation-improves-retention-logic
title Object manipulation in a visual representation significantly improves scores from post-test to retention test after two weeks of non-instruction
description Object manipulation in a visual representation significantly improves scores from post-test to retention test after two weeks of non-instruction
status review
evidence_strength moderate
newest_evidence 2002
source_checked 2026-10-20
generated by process:wiki-ingest on 2026-10-18
trust unverified — no one has confirmed this page's content
sources 1 — tessa-eysink-2002

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