"Female" and "Male" are here defined as "Having chosen the corresponding option in the test registration form". When "Female" is encoded as 0, "Intersexual" as .5, and "Male" as 1, the following statistics result:
Contents type: Personal information.
0 (female) | 531 |
0.5 (intersexual) | 1 |
1 (male) | 2182 |
Remark: This male/female ratio of 4.1 understates the sex difference in high-range test taking activity considerably; on the level of test submissions, this ratio is more like 11, because males take more tests per candidate.
(Test index) Test name | n | r |
---|---|---|
(21) Psychometric Qrosswords | 19 | 0.63 |
(6) De Laatste Test | 7 | 0.60 |
(47) Psychometrically Activated Grids Acerbate Neuroticism | 9 | 0.56 |
(33) Problems In Gentle Slopes of the first degree | 20 | 0.48 |
(84) Bonsai Test | 25 | 0.42 |
(76) Analogies subtest of Long Test For Genius (Netherlandic) | 17 | 0.41 |
(69) Odds | 28 | 0.40 |
(36) Reflections In Peroxide | 19 | 0.38 |
(65) Long Test For Genius (Netherlandic) | 16 | 0.36 |
(112) Combined Numerical and Spatial sections of Test For Genius - Revision 2016 | 29 | 0.35 |
(103) Problems In Gentle Slopes of the second degree | 23 | 0.34 |
(77) Analogies #1 | 32 | 0.32 |
(105) Space, Time, and Hyperspace - Revision 2016 | 30 | 0.31 |
(87) Cooijmans Intelligence Test - Form 2 | 66 | 0.31 |
(117) The Hammer Of Test-Hungry - Revision 2013 | 16 | 0.30 |
(56) Short Test For Genius | 73 | 0.30 |
(74) Cooijmans On-Line Test | 31 | 0.30 |
(95) A-16 - Early experimental association test in Netherlandic, 21 items | 5 | 0.29 |
(66) Test For Genius - Revision 2004 | 80 | 0.29 |
(55) Spatial Insight Test | 26 | 0.29 |
(48) Narcissus' last stand | 17 | 0.29 |
(111) Test For Genius - Revision 2016 | 21 | 0.29 |
(80) Qoymans Multiple-Choice #4 | 168 | 0.26 |
(53) Qoymans Multiple-Choice #3 | 273 | 0.26 |
(52) Qoymans Multiple-Choice #2 | 354 | 0.24 |
(73) Qoymans Automatic Test #3 | 11 | 0.23 |
(7) The Final Test | 125 | 0.22 |
(81) Association subtest of Long Test For Genius (Netherlandic) | 20 | 0.20 |
(27) Spatial section of Test For Genius - Revision 2004 | 129 | 0.20 |
(18) The Nemesis Test | 48 | 0.20 |
(57) Space, Time, and Hyperspace | 181 | 0.19 |
(35) Intelligence Quantifier by assessment | 138 | 0.18 |
(28) The Test To End All Tests | 66 | 0.17 |
(19) Numerical section of Test For Genius - Revision 2010 | 83 | 0.16 |
(68) Numbers | 120 | 0.16 |
(5) Daedalus Test | 32 | 0.16 |
(107) The Alchemist Test | 18 | 0.16 |
(67) A-18 - Early experimental association test in Netherlandic | 7 | 0.15 |
(51) Qoymans Multiple-Choice #1 | 177 | 0.15 |
(3) Qoymans Multiple-Choice #5 | 83 | 0.15 |
(31) Numerical section of The Marathon Test | 44 | 0.14 |
(26) Verbal section of Test For Genius - Revision 2004 | 114 | 0.14 |
(104) The Final Test - Revision 2013 | 17 | 0.13 |
(45) Numerical and spatial sections of The Marathon Test | 42 | 0.13 |
(4) A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude | 25 | 0.13 |
(116) Gliaweb Riddled Intelligence Test (old version) | 46 | 0.12 |
(40) Reason Behind Multiple-Choice - Revision 2008 | 80 | 0.12 |
(63) Long Test For Genius | 84 | 0.12 |
(11) Isis Test | 69 | 0.12 |
(75) Analogies of Long Test For Genius | 98 | 0.11 |
(41) The LAW - Letters And Words | 19 | 0.11 |
(0) Test of the Beheaded Man | 39 | 0.10 |
(54) Test of Shock and Awe | 23 | 0.09 |
(16) Lieshout International Mesospheric Intelligence Test | 91 | 0.09 |
(23) Gliaweb Riddled Intelligence Test - Revision 2011 | 156 | 0.09 |
(15) Letters | 22 | 0.09 |
(32) Spatial section of The Marathon Test | 43 | 0.09 |
(42) The Marathon Test | 28 | 0.09 |
(108) Verbal section of Test For Genius - Revision 2016 | 22 | 0.08 |
(29) Words | 23 | 0.08 |
(93) A-12 - Early experimental oral association test in Netherlandic, 40 items | 18 | 0.07 |
(12) Cooijmans On-Line Test - Two-barrelled version | 32 | 0.07 |
(109) The Bonsai Test - Revision 2016 | 25 | 0.07 |
(39) Combined Numerical and Spatial sections of Test For Genius - Revision 2010 | 56 | 0.07 |
(24) Reason - Revision 2008 | 82 | 0.06 |
(70) A-22 - Early experimental association test in Netherlandic, 27 items (maximum score 31) | 20 | 0.06 |
(106) Cooijmans Intelligence Test - Form 4 | 65 | 0.06 |
(1) Cartoons of Shock | 54 | 0.05 |
(79) Association subtest of Long Test For Genius | 109 | 0.02 |
(88) Giga Test | 5 | 0.02 |
(25) The Sargasso Test | 46 | 0.01 |
(10) Genius Association Test | 104 | 0.01 |
(44) Associative LIMIT | 61 | 0.01 |
(85) Cooijmans Intelligence Test - Form 1 | 65 | 0.01 |
(30) Verbal section of The Marathon Test | 30 | 0.01 |
(61) A-10 - Early experimental association test in Netherlandic | 8 | 0.00 |
(72) Qoymans Automatic Test #1 | 44 | -0.00 |
(43) Test For Genius - Revision 2010 | 38 | -0.03 |
(37) Problems In Gentle Slopes of the third degree | 22 | -0.04 |
(2) Cooijmans Intelligence Test - Form 3 | 143 | -0.06 |
(8) Female Intelligence Test | 9 | -0.08 |
(50) Qoymans Automatic Test #2 | 35 | -0.08 |
(90) Analogies subtest of Long Test For Genius (French) | 11 | -0.09 |
(96) A-17 - Early experimental association test in English, 45 items | 8 | -0.12 |
(60) Association and Analogies (French) | 12 | -0.13 |
(91) Association subtest of Long Test For Genius (French) | 11 | -0.22 |
(64) Long Test For Genius (French) | 10 | -0.23 |
(97) A-19 - Early experimental association test in Netherlandic, 23 items | 5 | -0.26 |
(14) Low Countries Aptitude Test | 7 | -0.35 |
Weighted average of correlations: 0.154 (weighted sum: 751.00)
Conservatively estimated minimum g loading: 0.39
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.
Remark: For clarity, a negative correlation here means that females score higher than males on that test. With regard to the size of the correlations, one should keep in mind throughout this report that these are point-biserial correlations (= one of the variables is a dichotomy) which tend to have lower values than normal correlations.
(Test index) Test name | n | r |
---|---|---|
(209) Drenth number series | 13 | 0.75 |
(221) National I.Q. Tests | 10 | 0.61 |
(207) Chimera Test | 28 | 0.48 |
(244) Scholastic Aptitude Test (new) | 23 | 0.39 |
(213) Encephalist - R | 20 | 0.32 |
(239) Titan Test | 47 | 0.27 |
(247) Advanced Intelligence Test | 70 | 0.27 |
(205) Cito-toets | 23 | 0.27 |
(229) Mega Test | 64 | 0.25 |
(204) Chimera High Ability Riddle Test | 104 | 0.24 |
(212) Raven's Advanced Progressive Matrices (raw) | 46 | 0.21 |
(211) Culture Fair Numerical Spatial Examination - Final version | 289 | 0.19 |
(230) Omega Contemplative Items Pool | 21 | 0.15 |
(200) American College Testing program | 33 | 0.12 |
(237) Sigma Test | 56 | 0.11 |
(236) International High IQ Society Miscellaneous tests | 82 | 0.10 |
(225) Logima Strictica 36 | 96 | 0.09 |
(208) California Test of Mental Maturity | 13 | 0.07 |
(242) Unknown and miscellaneous tests | 393 | 0.06 |
(220) Cattell Culture Fair | 79 | 0.05 |
(240) Strict Logic Spatial Exam 48 | 47 | 0.00 |
(243) Scholastic Aptitude Test (old) | 53 | -0.01 |
(238) 916 Test | 33 | -0.01 |
(234) Strict Logic Sequences Exam I | 114 | -0.02 |
(235) Nonverbal Cognitive Performance Examination | 63 | -0.04 |
(218) Raven's Advanced Progressive Matrices (I.Q.) | 63 | -0.05 |
(201) Wechsler Adult Intelligence Scales | 67 | -0.06 |
(202) Cattell Verbal | 13 | -0.06 |
(203) Wechsler Adult Intelligence Scales for Children | 15 | -0.11 |
(206) W-87 | 33 | -0.11 |
(245) Stanford-Binet | 17 | -0.13 |
(219) Graduate Record Examination | 59 | -0.16 |
(232) GMAT | 12 | -0.17 |
(231) Mysterium Entrance Exam | 48 | -0.17 |
(214) Epiq Tests | 15 | -0.21 |
(228) Miller Analogies Test (raw; old version) | 19 | -0.23 |
(217) G-test | 14 | -0.24 |
Weighted average of correlations: 0.089 (weighted sum: 195.81)
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.
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 Sex on that type |
---|---|
Verbal | 0.42 |
Numerical | 0.42 |
Spatial | 0.42 |
Logical | 0.37 |
Heterogeneous | 0.32 |
Compound tests have been left out of this table to avoid overlap.
Balanced g loading = 0.39
Remark: This table implies that the sex difference on high-range tests is smallest on heterogeneous tests and largest on one-sided tests.
Country | n | mean score |
---|---|---|
Argentina | 8 | 1.00 |
Bosnia_and_Herzegovina | 5 | 1.00 |
Brazil | 21 | 1.00 |
Croatia | 5 | 1.00 |
Cuba | 2 | 1.00 |
Cyprus | 3 | 1.00 |
Czech_Republic | 3 | 1.00 |
Hong_Kong | 5 | 1.00 |
Hungary | 3 | 1.00 |
Japan | 17 | 1.00 |
Luxembourg | 2 | 1.00 |
Malta | 2 | 1.00 |
Russia | 4 | 1.00 |
Serbia | 2 | 1.00 |
Slovakia | 2 | 1.00 |
Thailand | 4 | 1.00 |
Italy | 28 | 0.96 |
Denmark | 22 | 0.95 |
France | 39 | 0.95 |
Finland | 54 | 0.94 |
Norway | 18 | 0.94 |
Spain | 32 | 0.94 |
Korea_South | 22 | 0.91 |
Mexico | 11 | 0.91 |
Germany | 87 | 0.91 |
Sweden | 80 | 0.90 |
Canada | 45 | 0.89 |
Poland | 18 | 0.89 |
South_Africa | 9 | 0.89 |
Bulgaria | 8 | 0.88 |
Israel | 8 | 0.88 |
Greece | 30 | 0.87 |
United_States | 438 | 0.86 |
Austria | 14 | 0.86 |
Romania | 7 | 0.86 |
Turkey | 14 | 0.86 |
Yugoslavia | 7 | 0.86 |
Singapore | 6 | 0.83 |
Slovenia | 6 | 0.83 |
India | 31 | 0.81 |
Philippines | 5 | 0.80 |
Belgium | 42 | 0.79 |
Australia | 27 | 0.78 |
China | 20 | 0.78 |
Malaysia | 4 | 0.75 |
Portugal | 8 | 0.75 |
Switzerland | 8 | 0.75 |
United_Kingdom | 64 | 0.75 |
Chile | 3 | 0.67 |
Iran | 3 | 0.67 |
New_Zealand | 6 | 0.67 |
Netherlands | 185 | 0.64 |
For reasons of privacy, only countries with 2 or more candidates are included in this table. Ranking is based on the unrounded means, and then alphabetic.
Note that these national means represent the proportion of males among the candidates from that country.
Correlation of this test with national average I.Q.'s published by Lynn and Vanhanen:
Although very small, this negative point-biserial correlation is highly significant (p < .006) as a result of the large number of candidates. In words, it means that in countries with higher average I.Q.'s, female participation in high-range testing is greater. This concords with the author's hypothesis that sex differences are smaller in populations of higher average I.Q.
Personalia | n | r |
---|---|---|
P.S.I.A. Rational | 372 | 0.27 |
P.S.I.A. Cold | 372 | 0.23 |
P.S.I.A. System factor | 232 | 0.17 |
P.S.I.A. Aspergoid | 372 | 0.15 |
P.S.I.A. Just | 372 | 0.13 |
P.S.I.A. Rare | 372 | 0.12 |
P.S.I.A. Cruel | 372 | 0.12 |
P.S.I.A. Introverted | 372 | 0.10 |
P.S.I.A. Deviance factor | 479 | 0.08 |
P.S.I.A. Antisocial | 372 | 0.08 |
Observed associative horizon | 71 | 0.06 |
Year of birth | 1778 | 0.04 |
Educational level | 986 | 0.02 |
Father's educational level | 913 | 0.01 |
Disorders (own) | 995 | 0.00 |
Mother's educational level | 921 | -0.00 |
P.S.I.A. True | 372 | -0.01 |
P.S.I.A. Orderly | 372 | -0.02 |
P.S.I.A. Ethics factor | 479 | -0.05 |
Disorders (parents and siblings) | 962 | -0.05 |
P.S.I.A. Extreme | 372 | -0.07 |
P.S.I.A. Neurotic | 372 | -0.13 |
Gifted Adult's Inventory of Aspergerisms | 187 | -0.14 |
Cooijmans Inventory of Neo-Marxist Attitudes | 135 | -0.21 |
Observed behaviour | 151 | -0.36 |
These correlations reveal that females are markedly higher than males on neo-Marxist attitudes, and less often engage in negative behaviours like test fraud and insulting responses to disappointing scores. Males, on the other hand, are higher on the P.S.I.A. scales Rational and Cold.