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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
August 1, 2025
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1 Dez 1911 Jahr - William Stern developed a formula for the Intelligence Quotient (IQ)

Beschreibung:

Stern proposed dividing an individual's mental age by their chronological age to obtain a single ratio.

Zugefügt zum Band der Zeit:

Datum:

1 Dez 1911 Jahr
Jetzt
~ 113 years ago