[Ads-l] Antedating of "IQ"

[ADSGarson O'Toole]

The citation below antedates both "I.Q." and "intelligence quotient" in the OED.

Date: March 1912
Periodical: Journal of Psycho-Asthenics
Volume 17, Number 3
Section: Review and Notices
Quote Page 115
Publisher: American Association for the Study of the Feeble Minded,
Faribault, Minnesota

https://www.google.com/books/edition/American_Journal_of_Mental_Deficiency/xHU1AQAAMAAJ?hl=en&gbpv=1&dq=%22intelligence+quotient%22&pg=PA115&printsec=frontcover

[Begin excerpt]
We may divide the mental by the chronological age and obtain an
"Intelligence quotient," (I.Q.) a term first used by Stern, which
would represent the true degree of deficiency.
[End excerpt]

Garson

On Fri, Sep 11, 2026 at 4:00 PM Shapiro, Fred
<00001ac016895344-dmarc-request at listserv.uga.edu> wrote:
>
> IQ (OED 1922)
>
> 1916 Lewis M. Terman The Measurement of Intelligence 78 (Internet Archive)
>
> Before we can interpret the results of an examination it is necessary to know how frequently an IQ of the size found occurs among unselected children.
>
> Fred Shapiro
>
>
> ------------------------------------------------------------
> The American Dialect Society - http://www.americandialect.org

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The American Dialect Society - http://www.americandialect.org