The author concludes that much remains to be done before group intelligence tests can be fully relied upon for trustworthy placing of individual pupils¶

Claim · All claims
Evidence · 1 study · associational r1 · q1
Currency · newest study 1921 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q1 i? Based on the extent to which rankings by one group test varied from rankings by another, the author concludes there is much yet to be done before group intelligence tests can be very fully relied upon for trustworthy placing of individual pupils. → Geyer 1921

Evidence¶

Geyer 1921¶

Geyer, D. L. (1921). The Reliability of Rankings by Group Intelligence Tests. The Journal of Educational Psychology. https://www.jstor.org/journal/jeduapsy

q1 · i? · associational · r1

The author's concluding interpretation of the between-test disagreement data reported in the article, referencing a recent symposium in the same journal. No new data are presented in this concluding statement.

"The extent to which rankings by a given group test varied from rankings by another, in the data cited above, would seem to show that, as indicated in the recent symposium in this journal, there is much yet to be done before group intelligence tests can be very fully relied upon for trustworthy placing of individual pupils."

Discussion¶

Related Claims¶

• Rankings of the same 120 junior high pupils by the Otis and Illinois group intelligence tests disagreed by a median of 18 places, with a rank correlation of 0.642 — a narrower finding that bears on this claim
• The editor predicts NRC group tests will make intelligence testing a routine school measure and open the way for adjusting school work to pupil needs — related