Claims

The Haggerty Intelligence Examination Delta 1 for grades 1-3 correlates .68 with teachers' estimates

Claim · All claims
Evidence · 1 study · review r2 · q2
Currency · newest study 1921 · not yet checked against its sources · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? The six-test Haggerty Delta 1 examination, used in the Virginia School Survey, gives a correlation of .68 with teachers' estimates. → Bell 1921

Evidence

Bell 1921

Bell, J. C. (1921). Group tests of intelligence: An annotated list. Journal of Educational Psychology, 12(2), 103–108. doi:10.1037/h0073682

q2 · i? · review · r2

Annotated-list entry for M. E. Haggerty's Intelligence Examination Delta 1, a six-test scale with a fore-exercise for each test, designed for grades 1-3. The author reports its use in the Virginia School Survey and the .68 correlation with teachers' estimates; no sample size is printed.

"They were used in the Virginia School Survey, and give a correlation of .68 with teachers' estimates."

Discussion

Page metadata
Field Value
type claim
id haggerty-delta-1-correlation-68-teachers-estimates
title The Haggerty Intelligence Examination Delta 1 for grades 1-3 correlates .68 with teachers' estimates
description The Haggerty Intelligence Examination Delta 1 for grades 1-3 correlates .68 with teachers' estimates
status review
evidence_strength weak
newest_evidence 1921
generated by process:wiki-ingest on 2026-10-24
trust unverified — no one has confirmed this page's content
sources 1 — bell-1921

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