IQ test

Commonly acknowledged IQ Score Ranking System:

IQ Score Traditional Ranking System
140 + (~.25%) Genius or near genius
130 – 139 Gifted
120 – 129 Very Superior Intelligence
110 – 119 Superior Intelligence
90 – 109 Average/Normal
80 – 89 Dullness
70 – 79 Borderline deficiency
50 – 70 Mild mental retardation
35-50 Moderate mental retardation
20 – 35 Severe mental retardation
< 20 Profound mental retardation (1%)
IQ Bellcurve
The distribution of IQ scores is as follows:

  • 50% of IQ scores fall between 90 and 110
  • 70% of IQ scores fall between 85 and 115
  • 95% of IQ scores fall between 70 and 130
  • 99.5% of IQ scores fall between 60 and 140
  • A score of 132 equals the top 2%
  • A score of 134 equals the top 1%
  • A score of 68 equals the bottom 2%
  • A score of 66 equals the bottom 1%

The Highest IQs On Record

People Still Alive

From the Past

In 1926, psychologist Dr. Catherine Morris Cox – who had been assisted by Dr. Lewis M. Terman, Dr. Florence L. Goodenaugh, and Dr. Kate Gordon – published a study “of the most eminent men and women” who had lived between 1450 and 1850 to estimate what their IQs might have been. Data from that study as well as other sources around the net were compiled to form the following list. Please drop me a comment if you have additions or corrections (make sure and cite sources).

Also, see Wikipedia’s list of Universal Genius (Polymaths).

Test YOUR IQ

Select the image below and the clock starts when the test loads, so be prepared in order to get the full 40 minutes. Trust me, you’re gonna need it! Oh, and if you answer “A” on every question, you get a 72! (a=72, b=65, c=65, d=65, e=72, f=72, g= 65, and h=65 – Only The Man would help you cheat on an IQ test!)

IQ Test

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