Early estimates place the IQ needed for successful first-year high school work between about 110 and 120¶

Claim · All claims
Evidence · 1 study · associational r1 · q2
Currency · newest study 1922 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? The Providence estimate implies an IQ of 120 is necessary for successful first-year high school work, while Terman predicts average high school success at IQ 110, the estimates never differing by more than a year. → Cobb 1922

Evidence¶

Cobb 1922¶

Cobb, Margaret V. (1922). The Limits Set to Educational Achievement by Limited Intelligence. The Journal of Educational Psychology, Vol. XIII, No. 8. https://eric.ed.gov/?q=The+Limits+Set+to+Educational+Achievement+by+Limited+Intelligence

q2 · i? · associational · r1

Section I compares the Providence school report's estimated limit of school progress by IQ with Terman's estimates, noting the estimates are identical at some points and never more than a year apart. The text states the Providence table "would seem to indicate" IQ 120 is necessary for first-year high school work.

"The Providence table would seem to indicate that in order to do successful work in the first year of high school, an intelligence quotient of 120 is necessary. Terman would predict average high school success where the intelligence quotient is 110."

Discussion¶

Learner Variables¶

• General Cognitive Ability — predictor: learners who differ on it differ in outcomes

Related Claims¶

• IQ is only approximately constant across successive examinations, with first-to-fifth IQ correlation of +0.82 and prediction error of 4 to 7 points — related