This report contains some information on the very highest test scores having occurred from 1995 to present. The cutoff for inclusion is I.Q. 170, which corresponds to protonorm 620 according to the current norms. The I.Q. range 170-179 is tentatively called "pervasive intelligence" (a few scores are actually in the 180+ range, called "exceptional intelligence", but it is not a priori so that higher scores have extra significance in this report). Considered are only scores on tests containing at least two different item types, when items are classified by their appearance as either verbal, numerical, spatial, or logical. Such heterogeneous tests have proven to be more robust, valid, and reliable than are homogeneous tests (with only one item type). Tests of which the norms are still of doubtful quality, and/or that may have too low ceilings, have not been considered.
There are 25 scores in this range, following above criteria. Their exact distribution, the norming of tests in this range, and the question whether higher scores within this range also mean greater ability, are not topics of this report. Those matters are dealt with, when possible, in the statistical reports for the tests in question, and in the report on the norming of protonorms to norms. When norms change, the number of scores that fall at or above I.Q. 170 may naturally change. Considering the rareness of these scores, it should best be assumed that the current norms within this range are not good enough to distinguish well between the corresponding performances, and that this may improve with future renormings.
The 25 scores have been obtained by 15 candidates:
All of the scores have been obtained by males.
|Age class||# scores|
|Birth year||# scores|
|Cooijmans Intelligence Test - Form 1||****|
|Test For Genius - Revision 2004||***|
|The Nemesis Test||**|
|Long Test For Genius||**|
|Cooijmans Intelligence Test - Form 4||**|
|Short Test For Genius||*|
|Cooijmans Intelligence Test - Form 2||*|
|Cooijmans Intelligence Test - Form 3||*|
|Reason Behind Multiple-Choice - Revision 2008||*|
|Test of the Beheaded Man||*|
|Cooijmans On-Line Test - Two-barrelled version||*|
|The Marathon Test||*|
|Numerical and Spatial sections of The Marathon Test||*|
|Cooijmans Intelligence Test 5||*|
|The Piper's Test||*|
|Secondary school completed||*******|
A total of 8 out of the 25 scores are from 4 candidates who report having a psychiatric disorder; one of those has committed suicide. 7 of those 8 scores are from 3 candidates who have been observed displaying disordered behaviour.
The majority of scores therefore are from a majority of candidates with no reported disorders, and with no observed disordered behaviour.
Remarkable in a large majority of these candidates is the absence of negativity and rudeness, and the, on the whole, positive, polite, constructive attitude.