The personal equation of the experimenters never amounted to more than one-third of the average mean variation, too small to be considered significant¶

Claim · All claims
Evidence · 1 study · associational r1 · q2
Currency · newest study 1914 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Examiner effects could not be accurately determined but in every treatment never exceeded one-third of the average mean variation. → Carl C. Brigham 1914

Evidence¶

Carl C. Brigham 1914¶

Carl C. Brigham. (1914). An Experimental Critique of the Binet-Simon Scale. The Journal of Educational Psychology. https://doi.org/10.1037/h0071183

q2 · i? · associational · r1

The article reports that examiner effects could not be accurately determined because one experimenter tested more older children and another more minus-grade cases; after eliminating such disturbing cases too few remained, but in every treatment the influence "never amounted to more than one-third of the average mean variation."

"However, in every method by which the results were treated to bring out the influence of the personal equation, that influence never amounted to more than one-third of the average mean variation, a value too small to be considered significant."

Discussion¶

Related Claims¶

• The Binet-Simon scale measured intelligence development from ages seven to eleven with at least 96 per cent efficiency under the study's conditions — related
• The Binet-Simon scale accurately graded fairly minute individual differences in mental ability within same-age groups, as validated against teacher and principal judgments — related
• The Binet scale can be understood and applied by the average teacher or school principal as readily as current pedagogical tests — related