I.Q. Test Scores by Country

National median protonorms and I.Q.s

Per country, the median of scores (expressed in protonorms) across a large number of high-range I.Q. tests is computed. Countries are ranked by median protonorm, and then by number of scores (n).

Total n = 1658

Most of the country names hyper-refer to images of those countries' stamps; these are scans of stamps actually received in correspondence with test candidates from the countries in question, in many cases in the period before Internet and e-mail become dominant.

Tests used

• Test of the Beheaded Man
• Cartoons of Shock
• Cooijmans Intelligence Test - Form 3
• Daedalus Test
• De Laatste Test
• The Final Test
• Genius Association Test
• Isis Test
• Cooijmans On-Line Test (Two-barrelled)
• Low Countries Aptitude Test
• Lieshout International Mesospheric Intelligence Test
• The Nemesis Test
• Cooijmans Intelligence Test - Form 3
• The Sargasso Test
• The Test To End All Tests
• Reason Behind Multiple-Choice - Revision 2008
• The LAW - Letters And Words
• The Marathon Test
• Qoymans Multiple-Choice #1
• Qoymans Multiple-Choice #2
• Qoymans Multiple-Choice #3
• Test of Shock and Awe
• Spatial Insight Test
• Short Test For Genius
• Space, Time, and Hyperspace
• Association and Analogies (German)
• A-10 - Early experimental association test in Netherlandic
• Long Test For Genius
• Long Test For Genius (French)
• Long Test For Genius (Netherlandic)
• Test For Genius - Revision 2004
• Numbers
• Odds
• Numerical Insight Test
• Cooijmans On-Line Test
• Analogies #1
• Analogies #1 (Netherlandic)
• Qoymans Multiple-Choice #4
• Reason
• KIT Intelligence Test - first attempts
• Bonsai Test
• Cooijmans Intelligence Test - Form 1
• Cooijmans Intelligence Test - Form 2
• Giga Test
• Grail Test

[Old versions of this report - More statistical reports on intelligence tests]