Statistics of Test For Genius - Revision 2004

© November 2008 Paul Cooijmans

Norms

Scores

0 **
9 *
12 *
14 *
18 **
19 **
21 *
25 *
26 *
29 **
31 *
32 *
32.5 *
33 *
34 *
35 *
36 ****
37 ***
38 **
39 *
40 **
41 *
42 *
43 *
45 ***
46 **
47 ***
48 *****
49 ***
51 *
52 *
53 *
56 *
61 **
62 *
63 *
67 *

Correlation with other tests

Test#cor
Qoymans Multiple-Choice #350.97
Sigma Test50.94
Spatial section of Test For Genius - Revision 2004600.93
Long Test For Genius130.90
Titan Test50.89
Cooijmans Intelligence Test - Form 2160.86
The Test To End All Tests110.83
International High IQ Society Miscellaneous tests70.83
Nonverbal Cognitive Performance Examination130.81
Mysterium Entrance Exam100.79
Verbal section of Test For Genius - Revision 2004600.78
Associative LIMIT Test110.76
Space, Time and Hyperspace170.75
Association subtest of Long Test For Genius140.74
Strict Logic Sequences Exam I120.73
Cartoons of Shock110.70
The Final Test180.68
Analogies of Long Test For Genius140.67
Test of the Beheaded Man50.62
Culture Fair Numerical Spatial Examination - Final version120.60
Qoymans Multiple-Choice #4260.57
Reason Behind Multiple-Choice150.51
Numbers100.50
Genius Association Test200.48
Reason160.47
Lieshout International Mesospheric Intelligence Test220.46
The Nemesis Test80.43
Qoymans Automatic Test #350.43
Bonsai Test80.43
Test of Shock and Awe90.42
Logima Strictica 36100.42
Verbal section of The Marathon Test50.34
The Sargasso Test60.34
TRI50.30
Culture Fair Numerical Spatial Examination - C70.30
KIT Intelligence Test60.30
Spatial Insight Test80.22
Strict Logic Spatial Exam 4880.21
Odds70.10
Cooijmans On-Line Test50.09
The Marathon Test5-0.08
Spatial section of The Marathon Test5-0.68
Numerical section of The Marathon Test5-0.69

Weighted average of correlations: 0.616

Conservatively estimated minimum g loading: 0.79

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 are not artificially inflated by leaving out ceiling scores, outliers or other anomalies.

Additional statistics November 2014

© November 2014 Paul Cooijmans

Scores on Test For Genius - Revision 2004

Contents type: Verbal, spatial.   Period: 2004-2010

0 **
9 *
12 *
14 *
18 **
19 **
20 *
21 *
22 *
25 *
26 **
27 *
29 **
30 *
31 **
32 *
32.5 *
33 **
34 *
35 **
36 ****
37 ***
38 **
39 **
40 **
41 *
42 **
43 **
45 ***
46 ***
47 ***
48 *****
49 ****
50 *
51 *
52 *
53 *
54 *
56 *
61 **
62 **
63 *
65 *
66 *
67 *
72 *
73 *

Correlation of Test For Genius - Revision 2004 with other tests by Paul Cooijmans

(Test index) Test name n r
(53) Qoymans Multiple-Choice #350.97
(21) Psychometric Qrosswords50.95
(27) Spatial section of Test For Genius - Revision 2004800.91
(2) Cooijmans Intelligence Test - Form 3120.90
(87) Cooijmans Intelligence Test - Form 2220.90
(63) Long Test For Genius140.89
(35) Intelligence Quantifier by assessment170.88
(26) Verbal section of Test For Genius - Revision 2004800.81
(79) Association subtest of Long Test For Genius150.78
(1) Cartoons of Shock160.78
(44) Associative LIMIT170.78
(12) Cooijmans On-Line Test (Two-barrelled)60.77
(57) Space, Time, and Hyperspace180.75
(3) Qoymans Multiple-Choice #5150.75
(40) Reason Behind Multiple-Choice - Revision 2008150.75
(0) Test of the Beheaded Man110.74
(18) The Nemesis Test110.73
(7) The Final Test220.70
(75) Analogies of Long Test For Genius150.70
(24) Reason - Revision 2008150.69
(28) The Test To End All Tests170.69
(80) Qoymans Multiple-Choice #4300.63
(10) Genius Association Test270.60
(68) Numbers120.57
(62) Reason Behind Multiple-Choice180.57
(33) Problems In Gentle Slopes of the first degree50.56
(11) Isis Test160.55
(16) Lieshout International Mesospheric Intelligence Test280.53
(82) Reason190.50
(84) Bonsai Test90.45
(54) Test of Shock and Awe90.42
(25) The Sargasso Test100.39
(83) KIT Intelligence Test - first attempts60.30
(69) Odds90.23
(55) Spatial Insight Test80.22
(74) Cooijmans On-Line Test50.09
(42) The Marathon Test60.04
(30) Verbal section of The Marathon Test70.02
(31) Numerical section of The Marathon Test6-0.31
(45) Numerical and spatial sections of The Marathon Test6-0.67
(32) Spatial section of The Marathon Test6-0.70
(29) Words5-0.77

Weighted average of correlations: 0.652

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, including possible floor/ceiling scores or outliers.

Correlation of Test For Genius - Revision 2004 with tests by others

(Test index) Test name n r
(218) Raven's Advanced Progressive Matrices (I.Q.)60.81
(235) Nonverbal Cognitive Performance Examination140.80
(236) International High IQ Society Miscellaneous tests100.78
(239) Titan Test110.75
(237) Sigma Test60.70
(234) Strict Logic Sequences Exam I180.67
(242) Unknown tests350.56
(231) Mysterium Entrance Exam130.53
(211) Culture Fair Numerical Spatial Examination - Final version140.52
(238) 916 Test70.41
(225) Logima Strictica 36140.40
(224) T.R.I.50.30
(201) Wechsler Adult Intelligence Scales70.27
(240) Strict Logic Spatial Exam 48100.20
(212) Raven's Advanced Progressive Matrices (raw)60.04
(223) Strict Logic Sequences Exam II6-0.03

Weighted average of correlations: 0.526

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, including possible floor/ceiling scores or outliers.

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.

Estimated loadings of Test For Genius - Revision 2004 on particular item types

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.

Typeg loading of Test For Genius - Revision 2004 on that type
Verbal0.83
Numerical0.51
Spatial0.84
Logical0.72
Heterogeneous0.83

Compound tests have been left out of this table to avoid overlap.

Balanced g loading = 0.75

National medians for Test For Genius - Revision 2004

Country n median score
Germany363.0
France257.5
Belgium256.5
Switzerland251.5
Canada349.0
Norway347.0
United_States2042.0
Australia439.5
United_Kingdom739.0
Greece438.0
Italy237.0
Sweden537.0
Spain234.5
Finland632.0

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.

Correlation of Test For Genius - Revision 2004 with personal details

Personalia n r
Candidate's self-estimated I.Q.30.80
Observed associative horizon80.43
Sex800.29
P.S.I.A. Rational310.29
Educational level760.24
P.S.I.A. Cruel310.21
Observed behaviour210.16
Mother's educational level750.14
Father's educational level750.12
P.S.I.A. Neurotic310.08
Year of birth800.07
P.S.I.A. Cold310.04
P.S.I.A. Rare310.02
P.S.I.A. Introverted31-0.01
Disorders (own)76-0.02
P.S.I.A. Orderly31-0.04
P.S.I.A. Antisocial31-0.05
P.S.I.A. Deviance factor37-0.10
P.S.I.A. Just31-0.12
P.S.I.A. Ethics factor37-0.13
P.S.I.A. True31-0.14
Gifted Adult's Inventory of Aspergerisms18-0.15
P.S.I.A. Aspergoid31-0.17
P.S.I.A. Extreme31-0.26
Disorders (parents and siblings)75-0.26
P.S.I.A. System factor14-0.27
Cooijmans Inventory of Neo-Marxist Attitudes3-0.91

Correlation with national I.Q.'s of Test For Genius - Revision 2004

Correlation of this test with national average I.Q.'s published by Lynn and Vanhanen:

Estimated g factor loadings upward and downward of particular scores

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 scoreUpward g (n)Downward g (n)
00.81 (675)NaN (0)
31.20.74 (488)0.69 (98)
400.74 (339)0.76 (266)
48.80.76 (129)0.77 (437)
96NaN (0)0.81 (675)

Reliability

Remark: This very high reliability is caused by (1) high quality of items as apparent in item analysis, and (2) above-average length of the test (72 items).

Error

Scores by age

Age class n median score
60 to 64114.0
55 to 59229.5
50 to 54427.5
45 to 49635.0
40 to 44843.5
35 to 39847.5
30 to 341138.0
25 to 291546.0
22 to 241343.0
20 or 21137.0
18 or 19238.5
17335.0
16134.0

Scores by year taken

Year taken n median score
20041439.5
20051841.0
20061042.5
20071337.0
2008738.0
2009657.5
2010742.0

ryear taken × median score = 0.40 (n = 75)

Robustness and overall test quality

Item analysis

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.

Subtest statistics

For the correlation between the subtests and any other statistics on subtest level, see the statistical reports for "Verbal section of Test For Genius - Revision 2004" and "Spatial section of Test For Genius - Revision 2004".