A single Thorndike-McCall administration deviates about 0.31 of a school year from the five-test composite; measuring monthly progress requires composites of 3 or 4 tests¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 1921 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? Composites of 1, 2, 3, or 4 Thorndike-McCall tests deviate from the composite of all 5 by 0.31, 0.22, about 1 month, and about 3/5 of a school year respectively in grade IV, so measuring monthly progress requires 3 or 4 tests. → Arthur I. Gates 1921

Evidence¶

Arthur I. Gates 1921¶

Arthur I. Gates. (1921). An Experimental and Statistical Study of Reading and Reading Tests (Continued). The Journal of Educational Psychology. https://doi.org/10.1037/h0068367

q3 · i? · associational · r2

Analysis of Table VI deviations of 1-4 test composites from the 5-test composite, converted to grade years (one test: 0.31 of a school year in grade IV). The article concludes monthly progress measurement needs "a composite score of 3 or 4 tests".

"This means that if we wish to measure monthly progress, we will need to secure a composite score of 3 or 4 tests, requiring 1}^ to 2 hours time. To measure adequately the monthly progress of each individual will require at least 3 tests."

Discussion¶

Related Claims¶

• Practice effects on the Thorndike-McCall test over two or more hours of testing are very small — related