Stanford Adult test results correlate .44 with college grades when Juniors and Sophomores are re-ranked as one group¶

Claim · All claims
Evidence · 1 study · associational r1 · q2
Currency · newest study 1919 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? In Caldwell's study of 48 college students, the correlation between intelligence quotient and grades was .44 for Juniors and Sophomores re-ranked in one group, higher than any prior reported coefficient except Kitson's. → Caldwell 1919

Evidence¶

Caldwell 1919¶

Caldwell, Helen Hubbert. (1919). Adult Tests of the Stanford Revision Applied to College Students. The Journal of Educational Psychology, X(10). https://doi.org/10.1037/h0074484

q2 · i? · associational · r1

Correlational study of 24 Sophomores and 24 Juniors at Randolph-Macon Woman's College tested with the XVI and XVIII year Terman tests; Pearson rank correlations computed against registrar's grades. The combined-group coefficient "is higher than any yet obtained except that of Kitson" (.44 per Table II).

"In the re-ranking of the two groups as one, even though the three records discussed above are included, the coefficient of correlation between the grades and intelligence quotient is higher than any yet obtained except that of Kitson."

Discussion¶

Related Claims¶

• Test results correlate more highly with estimated intelligence than with grades, including Starch's .75 versus .30 at Wisconsin — related
• IQ-grade correlation differs sharply by class standing: .69 for Juniors versus .17 for Sophomores, rising to .48 when three discrepant records are omitted — related
• Prior studies show low and variable correlations between mental tests and college grades, averaging from .09 to .44 — related
• Three Sophomores' discrepant records trace to character factors, including over-rating due to verbal fluency — related
• Correlations between Alpha and grades vary by class standing, lowest for graduates (r = .15) and highest for seniors (r = .38) — related