Girls show slight superiority in range of botanical information while boys show lower error rates (2% vs 7%)¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r1 · q2
Currency · newest study 1919 · 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? Reclassified by sex, results show a slight superiority in girls of range of information in nature study. → Grier 1919 q2 i? Boys' percentage of error (2%) is lower than girls' (7%) on the botany test. → Grier 1919 (2)

Evidence¶

Grier 1919¶

Grier, N. M. (1919). The range of information in biology: III. Botany. Journal of Educational Psychology, 10(10), 509–516. doi:10.1037/h0073567

q2 · i? · associational · r1

Sex reclassification of the same test data (101 boys, 82 girls in Table II). The article reports "a slight superiority in girls of range of information in nature study"; only percentages are printed, no effect size.

"Reclassified by sex, the results of the rest show a slight superiority in girls of range of information in nature study."

Grier 1919 (2)¶

Grier, N. M. (1919). The range of information in biology: III. Botany. Journal of Educational Psychology, 10(10), 509–516. doi:10.1037/h0073567

q2 · i? · associational · r1

Error percentages by sex on the botany test: "2 per cent with boys, 7 per cent with girls". The author notes the same 2%/6% pattern appeared in the zoology paper of the series.

"This checks with the percentage of error, 2 per cent with boys, 7 per cent with girls."

Discussion¶

Learner Variables¶

Gender — predictor: outcomes differ by group: a gap reflecting circumstances and treatment, not a cause

Page metadata

Field	Value
`type`	`claim`
`id`	`sex-differences-botany-range-information`
`title`	`Girls show slight superiority in range of botanical information while boys show lower error rates (2% vs 7%)`
`description`	`Girls show slight superiority in range of botanical information while boys show lower error rates (2% vs 7%)`
`status`	`review`
`evidence_strength`	`weak`
`newest_evidence`	`1919`
`generated`	by `process:wiki-ingest` on `2026-10-25`
`trust`	unverified — no one has confirmed this page's content
`sources`	2 — `grier-1919`, `grier-1919-2`

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