Long-term nature exposures produced inconsistent effects on long-term knowledge acquisition, with positive garden and outdoor-lesson effects for some groups but not others¶

Claim · All claims
Evidence · 1 study · review r3 · q2
Currency · newest study 2022 · 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? Wells et al. found school gardens enhanced science knowledge (greatest gains in high-fidelity classes), and Fägerstam and Blom found greater retention for outdoor classes in 7th graders but no significant effect for 8th graders. → Dianne A. Vella-Brodrick · Krystyna Gilowska 2022

Evidence¶

Dianne A. Vella-Brodrick · Krystyna Gilowska 2022¶

Dianne A. Vella-Brodrick · Krystyna Gilowska. (2022). Effects of Nature (Greenspace) on Cognitive Functioning in School Children and Adolescents: a Systematic Review. Educational Psychology Review (2022) 34:1217–1254. https://doi.org/10.1007/s10648-022-09658-5

q2 · i? · review · r3

The review reports Fägerstam and Blom's quasi-experiment measuring long-term biology knowledge by an essay-type question plus interviews, and notes Wells et al. (2015) found classes with "the greatest increases in their science knowledge, by 0.78 on average" received higher garden-intervention dosages.

"They found greater long-term knowledge retention for outdoor compared with indoor classes for 7th graders. However, no significant effects of nature were found for 8th graders."

Discussion¶

Learner Variables¶

Long-Term Memory — outcome: instruction changes it

Nature-based instruction improves academic achievement over traditional instruction, with larger gains at larger doses — related

Page metadata

Field	Value
`type`	`claim`
`id`	`long-term-knowledge-inconsistent-nature-effects`
`title`	`Long-term nature exposures produced inconsistent effects on long-term knowledge acquisition, with positive garden and outdoor-lesson effects for some groups but not others`
`description`	`Long-term nature exposures produced inconsistent effects on long-term knowledge acquisition, with positive garden and outdoor-lesson effects for some groups but not others`
`status`	`review`
`evidence_strength`	`mixed`
`newest_evidence`	`2022`
`generated`	by `process:wiki-ingest` on `2026-10-22`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `dianne-a-vella-brodrick-krystyna-gilowska-2022`

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