Group tests correlate much lower with the Stanford Revision (.45 and .53) and only .37 with each other¶

Claim · All claims
Evidence · 1 study · associational r1 · q2 · i3 large
Currency · newest study 1921 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i3 The Pressey Primer Scale correlated .45 and the Meyer Tests .53 with the Stanford Revision, and the two group tests correlated only .37 with each other. → Chassell 1921

Evidence¶

Chassell 1921¶

Chassell, C. F., & Chassell, L. M. (1921). A survey of the three first grades of the Horace Mann School by means of psychological tests and teachers' estimates, and a statistical evaluation of the methods employed. Part II. The Journal of Educational Psychology, 12(5), 243-252. https://doi.org/10.1037/h0068285

q2 · i3 · associational · r1

Correlational analysis of group test scores against Stanford Revision mental ages in the same first-grade survey, based on 37 and 45 cases respectively; the printed correlations r = .45 and r = .53 are large effects by the r code table, as is r = .37 between the two group tests themselves.

"The correlations with the two group tests" are much lower, namely, .45 for the Pressey Primer Scale, and .53 for the Meyer Tests" (based on 37 and 45 cases, respectively). A correlation of only .37 was found between the two group tests themselves."

Discussion¶

Related Claims¶

• Combinations of two measure types correlate very highly with the composite (.96, .91, .98), with little difference between choices — related
• Group tests combined with teachers' estimates correlate .77 with the Stanford Revision, questioning the necessity of individual examination — related
• Teachers' estimates show the highest single-measure correlation with the Stanford Revision (.72, 60 cases) — related
• The Pressey Mental Survey Primer Scale for grades 1-3 requires neither reading nor writing and correlates .58 with teachers' estimates — related