Contents type: Verbal, logical. Period: 2008-present
| 9 | * |
| 35 | * |
| 85 | * |
| 117.5 | * |
| 121 | * |
| 125 | * |
| 126.5 | * |
| 128 | * |
| 134.5 | * |
| 142.5 | * |
| 145.5 | * |
| 146 | * |
| 150 | * |
| 153.5 | * |
| 155.5 | * |
| 156 | ** |
| 157 | ** |
| 158 | * |
| 159 | * |
| 160 | * |
| 161 | *** |
| 162 | * |
| 169 | * |
| 170 | * |
| 174.5 | * |
| 190 | * |
| Test | n | r |
|---|---|---|
| Reason - Revision 2008 | 30 | 0.95 |
| Intelligence Quantifier by assessment | 10 | 0.93 |
| Qoymans Multiple-Choice #5 | 30 | 0.91 |
| Cartoons of Shock | 10 | 0.89 |
| Test For Genius - Revision 2004 | 14 | 0.76 |
| Reason | 10 | 0.75 |
| Test of the Beheaded Man | 5 | 0.74 |
| The Test To End All Tests | 8 | 0.72 |
| Spatial section of Test For Genius - Revision 2004 | 16 | 0.70 |
| Reason Behind Multiple-Choice | 9 | 0.68 |
| Verbal section of Test For Genius - Revision 2004 | 16 | 0.67 |
| Cooijmans Intelligence Test - Form 2 | 10 | 0.66 |
| The Sargasso Test | 7 | 0.59 |
| Qoymans Multiple-Choice #4 | 12 | 0.56 |
| Numbers | 5 | 0.54 |
| Genius Association Test | 11 | 0.48 |
| Cooijmans Intelligence Test - Form 3 | 8 | 0.42 |
| The Nemesis Test | 5 | 0.38 |
| Associative LIMIT | 10 | 0.32 |
| The Final Test | 11 | 0.31 |
| Isis Test | 9 | 0.24 |
| Spatial Insight Test | 5 | 0.23 |
| Lieshout International Mesospheric Intelligence Test | 11 | 0.23 |
| Qoymans Multiple-Choice #3 | 5 | 0.15 |
Weighted average of correlations: 0.650
Conservatively estimated minimum g loading: 0.81
Ranking in above table is based on the unrounded correlations. All available data is present in this table, no tests are left out except for those with less than 5 score pairs. All known pairs are used to obtain the true, honest statistics; correlations have not been artificially inflated by leaving out ceiling scores, outliers or other anomalies.
| Test | n | r |
|---|---|---|
| Titan Test | 7 | 0.97 |
| Nonverbal Cognitive Performance Examination | 5 | 0.46 |
| Mysterium Entrance Exam | 6 | 0.34 |
| Strict Logic Sequences Exam I | 8 | -0.13 |
Weighted average of correlations: 0.389
Ranking in above table is based on the unrounded correlations. All available data is present in this table, no tests are left out except for those with less than 5 score pairs. All known pairs are used to obtain the true, honest statistics; correlations have not been artificially inflated by leaving out ceiling scores, outliers or other anomalies.
Please be aware that correlations with these external tests are in most cases affected (depressed, typically) by one or more of the following: 1) Little overlap with the object test because of the much lower ceilings and inherent ceiling effects of the tests used in regular psychology; 2) Candidates reporting scores selectively, for instance only the higher ones while withholding lower ones; 3) Candidates reporting, or having been reported by psychometricians, incorrect scores.
These are estimated g factor loadings, but against homogeneous tests containing only particular item types, as opposed to non-compound heterogeneous tests. Although tending to surprise the lay person, it is not uncommon for tests to have high loadings on item types they do not actually contain themselves. Such loadings reflect the empirical fact that most tests for mental abilities measure primarily g, regardless of their contents; that the major part of test score variance is caused by g, and only a minor part by factors germane to particular item types. It is of key importance to understand that this is a fact of nature, a natural phenomenon, and not something that was built into the tests by the test constructors.
| Type | g loading of Reason Behind Multiple-Choice - Revision 2008 on that type |
|---|---|
| Verbal | 0.80 |
| Numerical | 0.74 |
| Spatial | 0.68 |
| Logical | 0.95 |
| Heterogeneous | 0.76 |
There is no overlap between the categories in this table as a result of leaving out compound tests.
Balanced g loading = 0.79
| Country | n | median score |
|---|---|---|
| United_States | 8 | 159.0 |
| Germany | 3 | 156.0 |
| Finland | 2 | 140.3 |
| Greece | 2 | 119.3 |
For reasons of privacy, only countries with 2 or more candidates are included in this table. Ranking is based on the medians, and then alphabetic.
| Personalia | n | r |
|---|---|---|
| P.S.I.A. Neurotic - Revision 2007 | 7 | 0.50 |
| P.S.I.A. Orderly - Revision 2007 | 7 | 0.29 |
| P.S.I.A. Cruel - Revision 2007 | 7 | 0.23 |
| Educational level | 29 | 0.22 |
| Mother's educational level | 29 | 0.17 |
| P.S.I.A. Rare - Revision 2007 | 7 | 0.05 |
| Year of birth | 30 | 0.02 |
| Father's educational level | 28 | -0.03 |
| Sex | 30 | -0.10 |
| P.S.I.A. Extreme - Revision 2007 | 7 | -0.12 |
| P.S.I.A. Antisocial - Revision 2007 | 7 | -0.14 |
| Observed behaviour | 9 | -0.22 |
| P.S.I.A. Deviance factor - Revision 2007 | 7 | -0.26 |
| Disorders (own) | 29 | -0.27 |
| Gifted Adult's Inventory of Aspergerisms | 7 | -0.30 |
| P.S.I.A. Rational - Revision 2007 | 7 | -0.38 |
| P.S.I.A. Aspergoid - Revision 2007 | 7 | -0.39 |
| P.S.I.A. Ethics factor - Revision 2007 | 7 | -0.46 |
| Disorders (parents and siblings) | 29 | -0.53 |
| P.S.I.A. True - Revision 2007 | 7 | -0.54 |
| P.S.I.A. Introverted - Revision 2007 | 7 | -0.62 |
| P.S.I.A. Just - Revision 2007 | 7 | -0.65 |
| P.S.I.A. Cold - Revision 2007 | 7 | -0.69 |
| P.S.I.A. System factor - Revision 2007 | 7 | -0.73 |
Correlation of this test with national average I.Q.s published by Lynn and Vanhanen:
In parentheses the number of score pairs on which that estimated g factor loading is based. The Upward and Downward values are calculated including the pertinent score itself. It is normal that g factor loadings go down when the range is restricted, so some inevitable depression must be taken into account.
| Score | Upward (n) | Downward (n) |
|---|---|---|
| -100 | 0.81 (267) | NaN (0) |
| 139.3 | 0.64 (161) | 0.86 (41) |
| 155.8 | 0.54 (95) | 0.83 (117) |
| 160.5 | 0.88 (16) | 0.79 (195) |
| 172.3 | NaN (0) | 0.80 (226) |
| 196 | NaN (0) | 0.81 (267) |
Other internal statistics are reported at subtest level. The two subtests have statistical reports of their own.