Teachers' estimates show the highest single-measure correlation with the Stanford Revision (.72, 60 cases)¶

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 Among single measures, teachers' estimates of maturity and ability in reading correlated most highly with the Stanford Revision mental ages (r = .72, 60 cases). → 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 survey data from three first grades, comparing teachers' rankings in maturity and ability in reading with Stanford Revision mental ages. The article reports the printed correlation r = .72 (60 cases), which codes as a large effect (i = 3).

"An examination of the correlations reported for the Stanford Revision shows that the highest correlation between this measure and any other single measure appears in the case of teachers' estimates, nameh", .72 (60 cases being included)."

Discussion¶

Related Claims¶

• Group tests correlate much lower with the Stanford Revision (.45 and .53) and only .37 with each other — related
• Stanford-Binet mental age correlations with reading rise from grade III to grade VI — related
• Any single measure type approximates the composite (.89, .87, .85) but has only limited value used alone — related
• Group tests combined with teachers' estimates correlate .77 with the Stanford Revision, questioning the necessity of individual examination — related
• Combinations of two measure types correlate very highly with the composite (.96, .91, .98), with little difference between choices — related
• Against Stanford Binet criteria for 300 grade 3–6 children, the mental index correlated .47, the educational index .52, crude score with mental age .80, mental with educational index .62, and Difference with I.Q. .21 — related
• Mental index ratings on the group test showed close correspondence over a two-year interval (r = .72, rank correlation .77) among 46 retested children — related
• The Pressey Mental Survey Primer Scale for grades 1-3 requires neither reading nor writing and correlates .58 with teachers' estimates — related