Marnen Laibow-Koser vs William James Sidis

Who Was the Greater Genius? A Complete Comparison

Marnen Laibow-Koser
IQ268
Born1970
OriginDobbs Ferry, New York
Known ForBeing a child prodigy, proficient with multiple musical instruments and programm
VS
William James Sidis
IQ250
Born1898
Died1944
OriginManhattan, New York City, U.S.
Known ForThe Animate And The Inanimate

About Marnen Laibow-Koser

Is a genius with a proclaimed IQ of 268, who started studying and playing music at the age of 3 and is a multi-instrumentalist performer, as well as a computer science expert.

Read full biography of Marnen Laibow-Koser → · In-Depth Article →

About William James Sidis

American child prodigy

DER KOSTENLOSE TEST
Wie hoch ist Ihrer?

Zwanzig Fragen, acht Minuten auf der Uhr und ein Perzentil, gemessen an allen bisherigen Teilnehmern. Ohne Anmeldung.

IQ-Test starten →

Read full biography of William James Sidis → · In-Depth Article →

The Verdict

Based on estimated IQ scores, Marnen Laibow-Koser (IQ 268) ranks higher than William James Sidis (IQ 250). However, both made extraordinary contributions.

Frequently Asked Questions

Who had a higher IQ — Marnen Laibow-Koser or William James Sidis?

Marnen Laibow-Koser had an estimated IQ of 268 while William James Sidis had an estimated IQ of 250.

What is each genius known for?

Marnen Laibow-Koser is known for: Being a child prodigy, proficient with multiple musical instruments and programming techniques.. William James Sidis is known for: The Animate And The Inanimate.

Are both considered geniuses?

Yes. Both Marnen Laibow-Koser and William James Sidis are universally regarded as among history's greatest intellects.

Full Profile: Marnen Laibow-KoserFull Profile: William James Sidis

← Browse all genius comparisons | IQ Rankings