Coefficients of variability for physical traits tend to decrease from ages seven to seventeen and are generally higher in boys than in girls, per the review of Baldwin's growth study¶
Claim · All claims
Evidence · 1 study · reviewr?·q2
Currency · newest study 1921 · 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? Coefficients of variability of physical growth traits tend to decrease from seven to seventeen years of age. → New Publications 1921
q2 i? Coefficients of variability are, in general, higher in boys than in girls. → New Publications 1921
Evidence¶
New Publications 1921¶
New Publications. (1921). The Journal of Educational Psychology. https://psycnet.apa.org/journals/edu
q2 · i? · review · r?
The review reports, on Baldwin's growth study covering 400 individual growth curves in traits including height, weight, and strength, that coefficients of variability "tend, on the whole, to decrease from seven to seventeen" and to be higher in boys than girls. No effect sizes are printed.
"The coefficients of variability tend, on the whole, to decrease from seven to seventeen, and, in general, to be higher in boys than in girls."
Discussion¶
Related Claims¶
- Average-type children's percentage of final height attained by age 7 supports prediction of ultimate stature (70.3% for boys, 74.2% for girls) — related
- Children maintain their relative height rank within a group from ages 4 to 18, with little crossing of growth curves — related
- Height at age 12 can be predicted from height at age 6 with a probable error of estimate of 2.98 cm for boys and 2.58 cm for girls — related
- Growth measurements at age ten predict stature at sixteen within about 2.5 centimeters and IQ over the same period within 6.3 points — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
baldwin-variability-decreases-7-17-higher-boys |
title |
Coefficients of variability for physical traits tend to decrease from ages seven to seventeen and are generally higher in boys than in girls, per the review of Baldwin's growth study |
description |
Coefficients of variability for physical traits tend to decrease from ages seven to seventeen and are generally higher in boys than in girls, per the review of Baldwin's growth study |
status |
review |
evidence_strength |
weak |
newest_evidence |
1921 |
generated |
by process:wiki-ingest on 2026-10-24 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — new-publications-1921 |
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