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)¶

Claim · All claims
Evidence · 1 study · associational r2 · q2
Currency · newest study 1922 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? A boy of the average type at 7 years of age has gained 70.3 per cent of his final growth at 17, and a girl 74.2 per cent, permitting prediction of ultimate stature. → Bird T. Baldwin 1922

Evidence¶

Bird T. Baldwin 1922¶

Bird T. Baldwin. (1922). The Relation Between Mental and Physical Growth. The Journal of Educational Psychology, Vol. XIII, No. 1. https://psycnet.apa.org/journals/edu/13/1/193

q2 · i? · associational · r2

Descriptive analysis of the Iowa growth-curve data on height. The author reports that "a boy of the average type at 7 years of age has gained 70.3 per cent of his final growth at 17 years of age, and a girl 74.2 per cent."

"knowing that a boy of the average type at 7 years of age has gained 70.3 per cent of his final growth at 17 years of age, and a girl 74.2 per cent of her final growth, we can predict what the ultimate stature of a similiar child should be."

Discussion¶

Related Claims¶

• 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
• Children maintain their relative height rank within a group from ages 4 to 18, with little crossing of growth curves — 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
• 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 — related