These statistics are from the version of the PSIA that was in use from 2003 to 2007, and was highly similar to the later Revision 2007. The scores are t-scores (mean = 50, σ = 10) normed on an earlier group (partly overlapping this one) so this group may not have an exact mean and σ of 50 and 10. An explanation of the scale can be found through the test's order page.
Explanatory and analytical remarks regarding the interpretation of the statistics are purposely largely avoided, so it is up to the reader to study the report carefully and thus obtain a clear impression of the test's validity — that is, "what it measures". Although the statistics sometimes reveal an almost chilling discriminative power, experience shows that explicitly observing that in a remark tends to evoke negative responses in persons who recognize themselves ("Your remark betrays that your are biased! The test only measures your personal biases!", et cetera).
24 | * |
25 | ** |
26 | ** |
27 | ** |
29 | ** |
31 | * |
32 | ** |
33 | ** |
34 | * |
35 | * |
36 | **** |
37 | **** |
38 | **** |
39 | * |
40 | ****** |
41 | ****** |
42 | ********** |
43 | ******** |
44 | ************* |
45 | ********* |
46 | ********* |
47 | ******** |
48 | ********* |
49 | ************* |
50 | ************* |
51 | **************** |
52 | ********** |
53 | ********** |
54 | ************** |
55 | ****** |
56 | ************* |
57 | ************* |
58 | ***** |
59 | ******** |
60 | ****** |
61 | ************* |
62 | **** |
63 | ***** |
64 | ****** |
65 | *********** |
66 | *** |
67 | * |
68 | * |
69 | ** |
70 | * |
71 | * |
72 | ** |
73 | **** |
74 | * |
75 | ** |
76 | ** |
78 | * |
84 | * |
n = 238
24 | * |
25 | ** |
26 | ** |
27 | ** |
29 | ** |
31 | * |
33 | ** |
34 | * |
35 | * |
36 | * |
37 | **** |
38 | **** |
39 | * |
40 | ***** |
41 | **** |
42 | ********* |
43 | ******* |
44 | ************ |
45 | ******* |
46 | ****** |
47 | **** |
48 | ******* |
49 | ************ |
50 | ********** |
51 | ************** |
52 | ********* |
53 | ******** |
54 | ************* |
55 | **** |
56 | ******** |
57 | ********** |
58 | **** |
59 | ***** |
60 | **** |
61 | *********** |
62 | *** |
63 | ***** |
64 | ***** |
65 | ********* |
66 | ** |
67 | * |
68 | * |
69 | ** |
70 | * |
71 | * |
72 | ** |
73 | **** |
74 | * |
76 | ** |
78 | * |
84 | * |
n = 57
32 | ** |
36 | *** |
40 | * |
41 | ** |
42 | * |
43 | * |
44 | * |
45 | ** |
46 | *** |
47 | **** |
48 | ** |
49 | * |
50 | *** |
51 | ** |
52 | * |
53 | ** |
54 | * |
55 | ** |
56 | ***** |
57 | *** |
58 | * |
59 | *** |
60 | ** |
61 | ** |
62 | * |
64 | * |
65 | ** |
66 | * |
75 | ** |
Test name | n | r |
---|---|---|
Verbal section of The Marathon Test | 4 | 0.97 |
Words | 4 | 0.94 |
Letters | 4 | 0.75 |
Evens | 4 | 0.59 |
Analogies of Long Test For Genius | 13 | 0.55 |
Qoymans Multiple-Choice #2 | 6 | 0.55 |
The Marathon Test | 4 | 0.50 |
Problems In Gentle Slopes of the third degree | 5 | 0.46 |
Test of Inductive Reasoning / J.C.T.I. (Xavier Jouve) | 8 | 0.45 |
Titan Test (Ronald K. Hoeflin) | 8 | 0.42 |
Bonsai Test | 6 | 0.36 |
Qoymans Multiple-Choice #1 | 7 | 0.36 |
Qoymans Multiple-Choice #3 | 25 | 0.35 |
Wechsler Adult Intelligence Scales | 12 | 0.34 |
Strict Logic Spatial Exam 48 (Jonathan Wai) | 4 | 0.34 |
Chimera High Ability Riddle Test (Bill Bultas) | 4 | 0.33 |
Cooijmans On-Line Test - Two-barrelled version | 4 | 0.32 |
Test of Shock and Awe | 9 | 0.32 |
Unknown and miscellaneous tests | 57 | 0.27 |
Cooijmans Intelligence Test - Form 1 | 7 | 0.26 |
Numerical section of The Marathon Test | 6 | 0.25 |
Epiq Tests (aggregate) | 7 | 0.24 |
Association subtest of Long Test For Genius | 14 | 0.22 |
Reason - Revision 2008 | 6 | 0.22 |
Tests by Nicolas Elenas (aggregate) | 6 | 0.19 |
The Final Test | 22 | 0.19 |
Long Test For Genius | 9 | 0.18 |
Cooijmans Intelligence Test - Form 3 | 9 | 0.17 |
Reflections In Peroxide | 4 | 0.17 |
KIT Intelligence Test - first attempts | 9 | 0.16 |
Associative LIMIT | 7 | 0.14 |
Lieshout International Mesospheric Intelligence Test | 17 | 0.14 |
Numerical and spatial sections of The Marathon Test | 6 | 0.09 |
Numbers | 16 | 0.09 |
The Bonsai Test - Revision 2016 | 5 | 0.08 |
916 Test (Laurent Dubois) | 5 | 0.06 |
Cattell Culture Fair | 12 | 0.06 |
Reason Behind Multiple-Choice - Revision 2008 | 6 | 0.06 |
Space, Time, and Hyperspace | 23 | 0.04 |
Genius Association Test | 29 | 0.04 |
The Sargasso Test | 11 | 0.04 |
Spatial section of Test For Genius - Revision 2004 | 26 | 0.01 |
The Test To End All Tests | 16 | 0.01 |
Test of the Beheaded Man | 9 | 0.01 |
Spatial Insight Test | 14 | -0.00 |
Strict Logic Sequences Exam I (Jonathan Wai) | 20 | -0.01 |
Narcissus' last stand | 4 | -0.01 |
Numerical Insight Test | 8 | -0.02 |
Cartoons of Shock | 8 | -0.04 |
Scholastic Aptitude Test (new) | 4 | -0.05 |
Spatial section of The Marathon Test | 6 | -0.05 |
International High IQ Society tests (aggregate) | 22 | -0.05 |
Raven's Advanced Progressive Matrices (raw) | 8 | -0.05 |
Test For Genius - Revision 2004 | 26 | -0.06 |
Odds | 7 | -0.07 |
Non-Verbal Cognitive Performance Examination (Xavier Jouve) | 20 | -0.08 |
Isis Test | 13 | -0.08 |
Reason | 13 | -0.10 |
Qoymans Automatic Test #2 | 4 | -0.16 |
Verbal section of Test For Genius - Revision 2004 | 26 | -0.16 |
Qoymans Multiple-Choice #4 | 91 | -0.17 |
Reason Behind Multiple-Choice | 11 | -0.19 |
Qoymans Multiple-Choice #5 | 6 | -0.21 |
Cooijmans Intelligence Test - Form 2 | 20 | -0.22 |
Daedalus Test | 4 | -0.25 |
Cooijmans On-Line Test | 6 | -0.27 |
Logima Strictica 36 (Robert Lato) | 16 | -0.27 |
Cito-toets | 5 | -0.28 |
Tests by Greg Grove (aggregate) | 14 | -0.29 |
Culture Fair Numerical Spatial Examination - Final version (Etienne Forsström) | 12 | -0.29 |
European I.Q. Test | 6 | -0.34 |
Mega Test (Ronald K. Hoeflin) | 4 | -0.37 |
American College Testing program | 7 | -0.40 |
Sigma Test (Melão Hindemburg) | 10 | -0.41 |
Qoymans Automatic Test #3 | 5 | -0.44 |
Qoymans Automatic Test #1 | 4 | -0.48 |
Raven's Advanced Progressive Matrices (I.Q.) | 6 | -0.55 |
The Nemesis Test | 8 | -0.57 |
Psychometric Qrosswords | 5 | -0.58 |
Scholastic Aptitude Test (old) | 8 | -0.65 |
W-87 (International Society for Philosophical Enquiry) | 7 | -0.68 |
Short Test For Genius | 4 | -0.70 |
Problems In Gentle Slopes of the second degree | 4 | -0.77 |
Graduate Record Examination | 5 | -0.86 |
Cooijmans Intelligence Test - Form 4 | 4 | -0.90 |
Weighted average of correlations: 0.003 (N = 950)
Estimated g factor loading: 0.06
Test name | n | r |
---|---|---|
(242) Unknown and miscellaneous tests | 4 | 0.20 |
(80) Qoymans Multiple-Choice #4 | 11 | 0.10 |
Weighted average of correlations: 0.124 (N = 15)
Estimated g factor loading among females: 0.35
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 | n | g loading of PSIA Orderly on that type |
---|---|---|
Verbal | 276 | 0.26 |
Numerical | 61 | 0.27 |
Spatial | 90 | 0.23 |
Logical | 37 | 0.17 |
Heterogeneous | 198 | -0.32 |
N = 662
Balanced g loading = 0.12
Country | n | mean score |
---|---|---|
Mexico | 3 | 61.33 |
Norway | 5 | 59.20 |
Turkey | 4 | 57.50 |
South_Africa | 4 | 56.75 |
Canada | 9 | 55.11 |
Australia | 6 | 55.00 |
Finland | 5 | 54.60 |
Germany | 12 | 54.00 |
Poland | 3 | 54.00 |
Netherlands | 34 | 52.94 |
Korea_South | 3 | 51.67 |
United_States | 98 | 51.43 |
China | 3 | 50.00 |
Israel | 4 | 50.00 |
Yugoslavia | 5 | 49.80 |
India | 12 | 49.75 |
Belgium | 8 | 49.63 |
Spain | 6 | 49.50 |
Sweden | 17 | 49.47 |
United_Kingdom | 13 | 48.85 |
Brazil | 7 | 44.71 |
Italy | 3 | 42.67 |
Correlation of this test with national average I.Q.'s published by Lynn and Vanhanen:
Personalia | n | r |
---|---|---|
PSIA System factor | 47 | 0.65 |
Observed behaviour | 19 | 0.49 |
Educational level | 292 | 0.27 |
Observed associative horizon | 10 | 0.26 |
PSIA True | 295 | 0.25 |
PSIA Ethics factor | 295 | 0.24 |
PSIA Extreme | 295 | 0.09 |
Gifted Adult's Inventory of Aspergerisms | 18 | 0.04 |
PSIA Cold | 295 | 0.01 |
Sex | 295 | -0.01 |
PSIA Just | 295 | -0.01 |
PSIA Rational | 295 | -0.02 |
Disorders (parents and siblings) | 291 | -0.04 |
Father's educational level | 277 | -0.08 |
Mother's educational level | 279 | -0.09 |
PSIA Rare | 295 | -0.10 |
PSIA Aspergoid | 295 | -0.10 |
PSIA Deviance factor | 295 | -0.11 |
PSIA Introverted | 295 | -0.13 |
PSIA Cruel | 295 | -0.15 |
PSIA Antisocial | 295 | -0.18 |
Disorders (own) | 292 | -0.23 |
Year of birth | 292 | -0.25 |
PSIA Neurotic | 295 | -0.27 |
Cooijmans Inventory of Neo-Marxist Attitudes | 9 | -0.29 |
Personalia | n | r |
---|---|---|
PSIA System factor | 10 | 0.53 |
Educational level | 55 | 0.26 |
PSIA True | 57 | 0.20 |
PSIA Ethics factor | 57 | 0.18 |
PSIA Cold | 57 | 0.03 |
PSIA Rational | 57 | 0.02 |
PSIA Aspergoid | 57 | 0.01 |
Year of birth | 55 | -0.02 |
PSIA Cruel | 57 | -0.05 |
PSIA Neurotic | 57 | -0.10 |
PSIA Deviance factor | 57 | -0.11 |
PSIA Rare | 57 | -0.12 |
Father's educational level | 47 | -0.13 |
PSIA Extreme | 57 | -0.14 |
PSIA Introverted | 57 | -0.14 |
Disorders (parents and siblings) | 54 | -0.15 |
Mother's educational level | 47 | -0.16 |
PSIA Just | 57 | -0.19 |
Disorders (own) | 55 | -0.20 |
PSIA Antisocial | 57 | -0.36 |
Personalia | n | r |
---|---|---|
PSIA System factor | 37 | 0.66 |
Observed behaviour | 18 | 0.49 |
Educational level | 237 | 0.28 |
PSIA True | 238 | 0.26 |
PSIA Ethics factor | 238 | 0.26 |
Observed associative horizon | 9 | 0.23 |
PSIA Extreme | 238 | 0.13 |
Gifted Adult's Inventory of Aspergerisms | 15 | 0.03 |
PSIA Just | 238 | 0.03 |
PSIA Cold | 238 | 0.01 |
Disorders (parents and siblings) | 237 | -0.01 |
PSIA Rational | 238 | -0.03 |
Father's educational level | 230 | -0.07 |
Mother's educational level | 232 | -0.08 |
PSIA Rare | 238 | -0.09 |
PSIA Deviance factor | 238 | -0.11 |
PSIA Introverted | 238 | -0.12 |
PSIA Aspergoid | 238 | -0.13 |
PSIA Antisocial | 238 | -0.15 |
PSIA Cruel | 238 | -0.16 |
Disorders (own) | 237 | -0.24 |
Year of birth | 237 | -0.29 |
PSIA Neurotic | 238 | -0.31 |
Cooijmans Inventory of Neo-Marxist Attitudes | 8 | -0.34 |
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 these values to be lower than the test's full-range g loading.
Below 1st quartile | 0.38 (243) |
---|---|
Below median | 0.27 (482) |
Above median | -0.32 (485) |
Above 3rd quartile | -0.59 (173) |
Positive in the lower half, negative in the upper half.