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Public Domain · 1921

Haggerty Intelligence Examination Delta 2: Single-form K-12 group test

Group intelligence test for grades 3 through 12, developed by Minnesota psychologist M.E. Haggerty (who also served on the National Intelligence Tests committee). The Delta 2 covers a broader grade range with a single form than most contemporary tests, making it useful for longitudinal cognitive studies.

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About the Haggerty Intelligence Examination Delta 2

M.E. Haggerty had served on the committee that produced the National Intelligence Tests in 1920. Almost immediately afterward, he produced his own group intelligence test, the Delta 2, designed to cover a wider grade range than the NIT and to use a single form across that range.

The Delta 2 covered grades 3 through 12 with a single test booklet. Items were calibrated so that the easiest were appropriate for grade 3 and the hardest were appropriate for high-school seniors. Scoring used a single point scale with norms for each grade.

Haggerty's Delta 2 was particularly useful for longitudinal cognitive studies because the same test could be administered to the same student multiple times over their school career. It was used in this way for several Minnesota school district studies in the 1920s and 1930s.

The 5 subtests

#1
Arithmetic Reasoning Word problems of graded difficulty.
Interactive
#2
Vocabulary Word definitions.
Interactive
#3
Verbal Analogies Standard analogy format.
Interactive
#4
Sentence Completion Fill the blank.
Interactive
#5
Information General knowledge multiple choice.
Interactive

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Sample items at grade 7 difficulty.

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About these items: These Haggerty Intelligence Examination Delta 2 items are originally-written reconstructions in the tradition of the original 1921 test, NOT verbatim copies of the historical items. Where the original is a 1-on-1 oral or physical-apparatus test (e.g., examiner shows a card, child draws a shape), we have adapted the format to self-administered multiple choice.

Source

All test materials and historical content on this page are transcribed from:

Haggerty, M. E. (1921). Haggerty Intelligence Examination Delta 2. Yonkers-on-Hudson, NY: World Book Company.

Public domain. Haggerty was Dean of the University of Minnesota College of Education and served on the National Intelligence Tests committee with Terman, Thorndike, Whipple, and Yerkes.

Cite this page

This page is part of the Historical IQ Tests Archive. Editorial content, transcription notes, and curation are released under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0). Public-domain primary sources retain their public-domain status. BibTeX · RIS · CSL JSON

Historical test materials are obsolete and are not valid modern IQ assessments. This page is preserved for educational, research, and historiographic purposes.

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The instrument documented above is a historical document. Modern IQ scoring uses contemporary norms (mean 100, SD 15). Our free full IQ test is available separately.