Psychological Test with Manual and Key, Holzinger-Crowder Uni-Factor Tests

Psychological Test with Manual and Key, Holzinger-Crowder Uni-Factor Tests

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Karl J. Holzinger (1892-1954) and Norman A. Crowder (1921-1998) believed that it was important to test the individual factors usually combined in scores from intelligence tests. This is an example of such a test. It has separate tests of four factors – verbal (Test 1 and 2), spatial (Tests 3 and 4), numerical (tests 5 and 6), and reasoning (Test 7, 8 and 9) skills. In addition to the test itself, there is a manual and a punched key for grading Test 4.
Holzinger earned his undergraduate degree (1915) and masters (1917) from the University of Minnesota and his PhD. in mathematics and education at the University of Chicago (1922). He joined the faculty at Chicago, rising to the positon of professor of education. Crowder was a research psychologist at the Human Resources Research Center of the United States Air Force.
Crowder, Norman A., “The Holzinger-Crowder Uni-Factor Tests,” The Personnel and Guidance Journal, 1957, 35 #5, pp. 281-286.
An obituary of Norman Allison Crowder (1921-1998) is at the website The test is not mentioned, although his work for the Air Force and other psychological studies are.
Currently not on view
Object Name
Psychological Test With Manual And Key
date made
World Book Company
Holzinger, Karl J.
Physical Description
paper (overall material)
overall:.1 cm x 21.8 cm x 28 cm; 1/32 in x 8 19/32 in x 11 1/32 in
ID Number
catalog number
accession number
Credit Line
Gift of Samuel Kavruck
Psychological Tests
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Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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