Tarski's World facilitated conditional reasoning relative to only-situated or only-formal instruction¶

Claim · All claims
Evidence · 1 study · causal r? · q3
Currency · newest study 1999 · checked against its sources 2026-10-22 (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? Tarski's World instruction, combining situated and formal elements, facilitated conditional reasoning compared with instruction based on only-situated or only-formal tasks. → Jelke van Der Pal 1999

Evidence¶

Jelke van Der Pal 1999¶

Jelke van Der Pal, Tessa Eysink. (1999). Balancing situativity and formality: the importance of relating a formal language to interactive graphics in logic instruction. Learning and Instruction, 9 (4), pp.327-341. https://telearn.hal.science/hal-00197363

q3 · i? · causal · r?

Empirical evaluation reported in the abstract comparing Tarski's World instruction with only-situated and only-formal instruction. The article states "Tarski's World was found to facilitate conditional reasoning", supporting the developmental situativity theory; no effect size is printed in the available text.

"The developmental situativity theory was supported empirically: Tarski's World was found to facilitate conditional reasoning, in contrast to instruction that is based on only-situated or only-formal tasks."

Discussion¶

Learner Variables¶

Algebraic Thinking — outcome: instruction changes it

Learning is assumed to be a non-symbolic inductive process enhanced by formal systems acting as tools — a broader claim this one bears on
Guidance in a computer-based logic environment significantly influences pre- to post-test scores for learning the conditional — related
The authors conclude that guidance combined with the possibility to manipulate objects supports acquisition of knowledge and skills in a domain — a broader claim this one bears on
Object manipulation in a visual representation significantly improves scores from post-test to retention test after two weeks of non-instruction — related

Page metadata

Field	Value
`type`	`claim`
`id`	`tarski-world-facilitated-conditional-reasoning`
`title`	`Tarski's World facilitated conditional reasoning relative to only-situated or only-formal instruction`
`description`	`Tarski's World facilitated conditional reasoning relative to only-situated or only-formal instruction`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`1999`
`source_checked`	`2026-10-22`
`generated`	by `process:wiki-ingest` on `2026-10-22`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `jelke-van-der-pal-1999`

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