The equal-group tests showed high test-retest and between-group correlations, supporting the reliability of the arithmetical-reasoning marking method.¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 1911 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Correlations between successive preliminary and final tests ranged from +.69 to +.95 across the three series, and between-group total-mark correlations reached +.99 (preliminaries) and +.88 (finals) in the infants' series. → W. H. Winch 1911

Evidence¶

W. H. Winch 1911¶

W. H. Winch. (1911). Mental Adaptation During the School Day as Measured by Arithmetical Reasoning.—Part II. The Journal of Educational Psychology. https://eric.ed.gov/?q=Mental+Adaptation+During+the+School+Day+as+Measured+by+Arithmetical+Reasoning

q2 · i? · causal · r2

Third series (infants): product-moment correlations computed from individual marks on the orally administered problem sets, marked one mark per rational step. The article also prints test-retest coefficients of +.78 and +.78 (preliminaries) and +.84 and +.79 (finals). These are correlations, not standardised effect sizes for a comparison.

"The total marks of the Group A series correlated with those of the Group B series to the extent of + .99 in the prelimina-ries and to the extent of + .88 in the finals."

Discussion¶

Related Claims¶

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• In a Standard I infants class, the group working arithmetical reasoning tests at 10.25 A.M. improved more on preliminary records than the group working at 9.40 A.M. — related
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