High-range I.Q. scores by age group

© Paul Cooijmans

Within males - January 2011

This report focuses on performance by age within males over a number of tests (listed under the table). For each test the median protonorms per age class are computed. For each age class the median protonorm over the tests is computed. The following table gives for each class the median protonorm, the therewith corresponding I.Q. by the current norming, and a graphical representation wherein the number of *s is (I.Q. - 86)/3.

Age class Prot. I.Q. Graph
80-84 280 118 ***********
75-79      
70-74 307 122 ************
65-69      
60-64 387 135 ****************
55-59 407 139 ******************
50-54 409 139.5 ******************
45-49 413 140 ******************
40-44 427 142 *******************
35-39 427 142 *******************
30-34 400 137 *****************
25-29 420 141 ******************
22-24 407 139 ******************
20-21 413 140 ******************
18-19 383 134 ****************
17 391 136 *****************
16 377 133 ****************
15 314 123 ************
14 327 125 *************
13 67 89 *
12 297 121 ************
11      
10      
9 233 112 *********

Tests used: Analogies subtest of Long Test For Genius (English), Association subtest of Long Test For Genius (English), Cooijmans Intelligence Test (Forms 1, 2), Numbers, The Final Test, Genius Association Test, Lieshout International Mesospheric Intelligence Test, Qoymans Multiple-Choice #1, 3, 4, Test For Genius - Revision 2004, Test To End All Tests, Short Test For Genius, Space, Time, and Hyperspace.

It is a pity there are still no scores in 65-69 yet, as that is probably the range where the decline of old age starts; or does it only start in 70-74, and is 65-69 still relatively close to the ages 16 to 64, which form more or less a solid block? We will see later. The irregularities in the lower part of the table result from the lower numbers of scores in those age classes.

Within females - October 2010

This report focuses on performance by age within females over a number of tests (listed under the table). For each test the median protonorms per age class are computed. For each age class the weighted median protonorm over the tests is computed. The following table gives for each class the number of scores on which the median is based, the median protonorm, the therewith corresponding I.Q. by the current norming, and a graphical representation wherein the number of *s is (I.Q. - 105)/3.

Age class  n  Prot. I.Q. Graph
75-79 1 355 129 ********
70-74 6 380 134 **********
65-69 0      
60-64 2 305 121 *****
55-59 3 304 121 *****
50-54 15 393 137 ***********
45-49 7 387 135 **********
40-44 34 353 129 ********
35-39 22 393 137 ***********
30-34 13 340 128 ********
25-29 18 346 129 ********
22-24 22 330 127 *******
20-21 5 324 125 *******
18-19 10 338 127 *******
17 4 311 122 ******
16 5 302 121 *****
15 5 337 127 *******
14 6 300 120 *****
13 1 286 118 ****
12 2 189 108 *

Tests used: Analogies #1, Analogies subtest of Long Test For Genius (English and Netherlandic), Association subtest of Long Test For Genius (English and Netherlandic), Bonsai Test, Cooijmans Intelligence Test (Forms 1, 2, and 3), COLT (One- and Two-barrelled versions), Numbers, Cartoons of Shock, De Laatste Test, The Final Test, Female Intelligence Test, Genius Association Test, Gliaweb Riddled Intelligence Test, Isis Test, Low Countries Aptitude Test, Lieshout International Mesospheric Intelligence Test, The Nemesis Test, Qoymans Multiple-Choice #1, 3, 4, and 5, Reason (original and Revision 2008), The Sargasso Test, Test For Genius - Revision 2004, Test To End All Tests, Giga Test, Odds, Test of Shock and Awe, Spatial Insight Test, Short Test For Genius, Space, Time, and Hyperspace, Test of the Beheaded Man.

Sex-combined - April 2006

This report focuses on the performance by age group over a number of normed tests: Test of Shock and Awe, Short Test For Genius, Space, Time and Hyperspace, Bonsai Test, CIT Forms 1 and 2, Final Test, Analogies subtest of Long TFG, Association subtest of Long TFG, QMC #3 and #4, Genius Association Test, Numbers, Test For Genius Revision 2004 and Test To End All Tests.

For each test the average I.Q.s by age group are computed. For each age group the weighted average I.Q. over the tests is computed. The following table gives for each group the number of scores on which the average is based, the average I.Q., and a graphical representation wherein the number of *s is (I.Q. - 103)/3.

Age group  n  I.Q. Graph
80-84 1 122 ******
75-79 0    
70-74 8 128.6 *********
65-69 0    
60-64 12 138.9 ************
55-59 31 139.7 ************
50-54 73 141.8 *************
45-49 86 140.8 *************
40-44 115 142.1 *************
35-39 165 142.6 *************
30-34 132 144.3 **************
25-29 167 141 *************
22-24 83 137.8 ************
20-21 57 140.5 *************
18-19 64 136.7 ***********
17 30 140.3 ************
16 22 135 ***********
15 4 127.3 ********
14 7 126.9 ********
13 3 113.7 ****
12 2 106 *

It is a pity there are no scores in 65-69 yet, as that is probably the point where the decline of old age starts; or does it only start in 70-74, and is 65-69 still relatively close to the ages 16 to 64, which form more or less a solid block? We will see later.