0 | * |
11 | * |
17 | * |
20 | * |
32 | * |
36 | * |
40 | * |
56 | * |
59 | * |
63 | * |
64 | * |
71 | * |
75 | * |
76 | * |
79 | ** |
80 | * |
84 | * |
85 | ** |
87 | ** |
88 | * |
89 | * |
92 | * |
93 | * |
94 | *** |
95 | * |
Test | # | cor |
---|---|---|
Cooijmans OnLine Test | 5 | 0.96 |
Reason Behind Multiple-Choice | 22 | 0.80 |
Bonsai Test | 5 | 0.63 |
Verbal section of Test For Genius - Revision 2004 | 14 | 0.60 |
Test of Shock and Awe | 6 | 0.59 |
Analogies of Long Test For Genius | 5 | 0.58 |
Test of the Beheaded Man | 5 | 0.56 |
The Test To End All Tests | 5 | 0.53 |
Test For Genius - Revision 2004 | 14 | 0.49 |
Cooijmans Intelligence Test - Form 2 | 8 | 0.46 |
Genius Association Test | 9 | 0.39 |
Space, Time and Hyperspace | 6 | 0.35 |
NVCPE | 5 | 0.33 |
Spatial section of Test For Genius - Revision 2004 | 14 | 0.32 |
Spatial Insight Test | 10 | 0.31 |
Associative LIMIT Test | 8 | 0.28 |
Lieshout International Mesospheric Intelligence Test | 16 | 0.23 |
Qoymans Multiple-Choice #4 | 22 | 0.16 |
Logima Strictica 36 | 7 | 0.10 |
Qoymans Multiple-Choice #3 | 5 | -0.02 |
Culture Fair Numerical Spatial Examination - Final version | 5 | -0.04 |
KIT Intelligence Test | 6 | -0.04 |
Numbers | 5 | -0.18 |
Strict Logic Sequences Exam I | 8 | -0.20 |
Association subtest of Long Test For Genius | 5 | -0.33 |
Weighted average of correlations: 0.348
Conservatively estimated minimum g loading: 0.59
0 | * |
11 | * |
17 | * |
20 | * |
32 | * |
36 | * |
38 | * |
40 | * |
56 | * |
59 | * |
63 | * |
64 | * |
71 | * |
72 | * |
75 | * |
76 | * |
79 | ** |
80 | *** |
82 | * |
84 | * |
85 | ** |
86 | * |
87 | **** |
88 | * |
89 | * |
92 | * |
93 | * |
94 | **** |
95 | * |
(Test index) Test name | n | r |
---|---|---|
(74) Cooijmans On-Line Test | 5 | 0.96 |
(24) Reason - Revision 2008 | 11 | 0.89 |
(62) Reason Behind Multiple-Choice | 31 | 0.80 |
(40) Reason Behind Multiple-Choice - Revision 2008 | 11 | 0.75 |
(68) Numbers | 9 | 0.72 |
(7) The Final Test | 12 | 0.68 |
(84) Bonsai Test | 5 | 0.63 |
(11) Isis Test | 7 | 0.62 |
(18) The Nemesis Test | 6 | 0.61 |
(54) Test of Shock and Awe | 6 | 0.59 |
(75) Analogies of Long Test For Genius | 5 | 0.58 |
(35) Intelligence Quantifier by assessment | 12 | 0.56 |
(0) Test of the Beheaded Man | 8 | 0.54 |
(87) Cooijmans Intelligence Test - Form 2 | 14 | 0.52 |
(66) Test For Genius - Revision 2004 | 19 | 0.50 |
(26) Verbal section of Test For Genius - Revision 2004 | 19 | 0.43 |
(27) Spatial section of Test For Genius - Revision 2004 | 19 | 0.40 |
(57) Space, Time, and Hyperspace | 7 | 0.39 |
(10) Genius Association Test | 13 | 0.39 |
(3) Qoymans Multiple-Choice #5 | 11 | 0.39 |
(1) Cartoons of Shock | 9 | 0.38 |
(44) Associative LIMIT | 12 | 0.38 |
(55) Spatial Insight Test | 10 | 0.31 |
(33) Problems In Gentle Slopes of the first degree | 5 | 0.31 |
(16) Lieshout International Mesospheric Intelligence Test | 20 | 0.27 |
(28) The Test To End All Tests | 10 | 0.22 |
(25) The Sargasso Test | 7 | 0.19 |
(80) Qoymans Multiple-Choice #4 | 31 | 0.16 |
(53) Qoymans Multiple-Choice #3 | 5 | -0.02 |
(83) KIT Intelligence Test - first attempts | 6 | -0.04 |
(79) Association subtest of Long Test For Genius | 5 | -0.33 |
Weighted average of correlations: 0.458
Conservatively estimated minimum g loading: 0.68
(Test index) Test name | n | r |
---|---|---|
(242) Unknown tests | 6 | 0.31 |
(235) Nonverbal Cognitive Performance Examination | 5 | 0.31 |
(211) Culture Fair Numerical Spatial Examination - Final version | 8 | 0.23 |
(225) Logima Strictica 36 | 9 | 0.15 |
(234) Strict Logic Sequences Exam I | 9 | -0.15 |
(240) Strict Logic Spatial Exam 48 | 7 | -0.33 |
Weighted average of correlations: 0.070
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 on that type |
---|---|
Verbal | 0.55 |
Numerical | 0.85 |
Spatial | 0.58 |
Logical | 0.95 |
Heterogeneous | 0.70 |
Balanced g loading = 0.73
Country | n | median score |
---|---|---|
Canada | 3 | 94.0 |
Spain | 2 | 86.5 |
Finland | 3 | 86.0 |
Greece | 2 | 83.5 |
United_States | 11 | 80.0 |
United_Kingdom | 2 | 75.0 |
Turkey | 2 | 43.5 |
Sweden | 2 | 26.5 |
Netherlands | 2 | 25.5 |
Personalia | n | r |
---|---|---|
Father's educational level | 37 | 0.30 |
P.S.I.A. Cold | 17 | 0.29 |
P.S.I.A. Cruel | 17 | 0.29 |
P.S.I.A. System factor | 14 | 0.24 |
Mother's educational level | 38 | 0.22 |
Year of birth | 38 | 0.17 |
P.S.I.A. Neurotic | 17 | 0.14 |
P.S.I.A. Introverted | 17 | 0.13 |
Observed associative horizon | 8 | 0.10 |
P.S.I.A. Deviance factor | 24 | 0.09 |
P.S.I.A. Antisocial | 17 | 0.07 |
P.S.I.A. Rare | 17 | -0.00 |
P.S.I.A. Aspergoid | 17 | -0.01 |
P.S.I.A. Orderly | 17 | -0.05 |
P.S.I.A. Rational | 17 | -0.05 |
Observed behaviour | 14 | -0.08 |
Disorders (parents and siblings) | 38 | -0.09 |
P.S.I.A. Just | 17 | -0.10 |
P.S.I.A. Extreme | 17 | -0.15 |
Disorders (own) | 38 | -0.21 |
P.S.I.A. Ethics factor | 24 | -0.21 |
P.S.I.A. True | 17 | -0.25 |
Educational level | 38 | -0.30 |
Gifted Adult's Inventory of Aspergerisms | 7 | -0.54 |
Cooijmans Inventory of Neo-Marxist Attitudes | 3 | -0.92 |
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 goal of this is to verify the hypothesis that g becomes less important, accounts for a smaller proportion of the variance, at higher I.Q. levels. The mere fact of restricting the range like this also depresses the g loading compared to computing it over the test's full range, so it would be normal for both values to be lower than the test's full-range g loading.
Raw score | Upward g (n) | Downward g (n) |
---|---|---|
0 | 0.68 (350) | NaN (0) |
66 | 0.56 (237) | 0.48 (49) |
80 | 0.29 (153) | 0.67 (124) |
87 | -0.17 (60) | 0.62 (242) |
94 | NaN (0) | 0.66 (338) |
96 | NaN (0) | 0.68 (350) |
Remark: In the upper part of the range, say above the mid-80s, there was a problem with "ceiling bumping" on this test, and it has been attempted to repair that in the revised version of 2008.
Remark: Crohnbach's alpha can not be computed for this test because some of the item scores are greater than 1.
Age class | n | median score |
---|---|---|
60 to 64 | 1 | 20.0 |
55 to 59 | 1 | 56.0 |
50 to 54 | 1 | 32.0 |
45 to 49 | 4 | 80.0 |
40 to 44 | 2 | 81.5 |
35 to 39 | 8 | 82.0 |
30 to 34 | 4 | 93.5 |
25 to 29 | 3 | 71.0 |
22 to 24 | 6 | 85.5 |
20 or 21 | 5 | 84.0 |
18 or 19 | 3 | 64.0 |
Year taken | n | median score |
---|---|---|
2003 | 4 | 87.0 |
2004 | 9 | 84.0 |
2005 | 8 | 73.0 |
2006 | 3 | 40.0 |
2007 | 4 | 86.5 |
2008 | 11 | 80.0 |
ryear taken × median score = -0.18 (n = 39)
Item statistics are not published as that would help future candidates. To detect bad items, answers and comments from candidates are studied, as well as, for each problem, the correlation with total score and the proportion of candidates getting it wrong (hardness of the item). Possible bad items are removed or revised, resulting in a revised version of the test.