The scale differentiates pupil material between schools in neighborhoods of different character¶

Claim · All claims
Evidence · 1 study (2 entries) · design r3 · q2
Currency · newest study 1919 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? In City B, only 24 per cent of children at the workers' school scored above the age medians of the university-professionals' school, with one child above its seventy-five percentile. → Pressey 1919 q2 i? In City A, 74 per cent of children in the 'best' school scored above the corresponding age medians of children in the 'worst' school. → Pressey 1919 (2)

Evidence¶

Pressey 1919¶

Pressey, L. W. (1919). A Group Scale of Intelligence for Use in the First Three Grades. The Journal of Educational Psychology. https://doi.org/10.1037/h0072897

q2 · i? · design · r3

School-comparison validation in City B contrasting a school attended by children of professional men with one attended by factory and quarry workers' children; percentages only, no effect size printed.

"Only 24 per cent, of the children in the second school tested above the age medians of the children attending the first school; there was only one child in the second school who tested above the seventy-five percentile for children of his age in the first school."

Pressey 1919 (2)¶

Pressey, L. W. (1919). A Group Scale of Intelligence for Use in the First Three Grades. The Journal of Educational Psychology. https://doi.org/10.1037/h0072897

q2 · i? · design · r3

School-comparison evidence in City A, where the worst school draws from a neighborhood of the cheapest kind of quarry labor; the article prints percentages but no test statistic.

"Similar facts can be presented for City A, in which 74 per cent of the children attending the "best" school score above their corresponding age medians for the children in the "worst" school"

Discussion¶

Related Claims¶

• Intermedian grade distances on the scientific-thinking scale are derived from the per cent of each grade's pupils lying between successive grade medians — related
• Grades overlap massively in spelling: on average 20.8% of pupils reach or exceed the median of the next grade above — related
• Uneven school coverage of ages makes general age norms for achievement tests practically impossible to establish — related
• Median age per grade, not per cent of retardation, is the best single statement of the age-grade situation for most practical purposes — related