Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

FAQ Get premium

Create a timeline

Public timelines

About & Feedback Terms Privacy FAQ

Cabinet Get premium

Donate

jan 22, 1912 - William Stern developed the original formula for the Intelligence Quotient (IQ) after studying the scores on Binet’s intelligence test

Added to timeline:

History of psychology

11 Dec 2017

0

0

688

Date:

jan 22, 1912

Now

~ 113 years ago

About & Feedback Terms Privacy FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL