Alpha predicts academic standing better in Agriculture (r = .54) than in Arts or Engineering, and subtest patterns vary by college¶

Claim · All claims
Evidence · 1 study (2 entries) · associational r2 · q3 · i3 large
Currency · newest study 1920 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 The whole examination correlated r = .54 in Agriculture, .27 in Arts, and .22 in Engineering random samples, with subtest correlations varying considerably between colleges. → Bridges 1920 q3 i? In a corroboration sample of all seniors in four colleges, findings for tests 2, 4 and 6 were confirmed, though other results varied. → Bridges 1920 (2)

Evidence¶

Bridges 1920¶

Bridges, J. W. (1920). The correlation between college grades and the Alpha intelligence tests. The Journal of Educational Psychology, 11(7), 361-369. https://doi.org/10.1037/h0071462

q3 · i3 · associational · r2

Correlations computed separately for 106 Arts, 87 Engineering and 70 Agriculture students in the 436-case sample (Table IV prints r = .54 Agriculture, r = .27 Arts, r = .22 Engineering); subtests such as Test 4 gave zero correlation for Engineering students.

"the examination as a whole gives a much higher correlation with academic standing in the college of Agriculture than in either of the other colleges."

Bridges 1920 (2)¶

Bridges, J. W. (1920). The correlation between college grades and the Alpha intelligence tests. The Journal of Educational Psychology, 11(7), 361-369. https://doi.org/10.1037/h0071462

q3 · i? · associational · r2

A second analysis obtained point-hour ratios for all senior students in the colleges of Arts, Agriculture, Engineering and Education and recomputed correlations with Alpha and each subtest; several values shifted, with the tests 2, 4 and 6 findings confirmed. No effect size is printed for the corroboration itself.

"They vary in some respects from those at first obtained; but the findings regarding tests 2, 4 and 6 are corroborated."

Discussion¶

Related Claims¶

• Correlations between Alpha and grades vary by class standing, lowest for graduates (r = .15) and highest for seniors (r = .38) — related
• The low Alpha–school-standing correlation is difficult to explain and investigators report conflicting correlation results — related
• Alpha subtests differ in predicting grades, with correlations from .17 (Test 3) to .37 (Test 7) among seniors — related