Statistics of Reason - Revision 2008

© Paul Cooijmans

Scores on Reason - Revision 2008 as of 25 January 2022

Contents type: Logical.   Period: 2008-present

1 *
4 *
6 *
15 *
24 *
27 *
28 **
46 *
47 *
49 *
53 *
56 **
57 *
59 *
60 ***
62 ***
63 *
64 *
67 ***
68 *
69 *
70 *
71 *
72 *****
73 *
74 *
75 *
76 **
78 *****
79 ****
80 ****
82 ***
83 **
84 *******
85 ***
86 ******
87 *****
88 *********
89 *
91 **
92 ***
93 **
94 **
95 *

Correlation of Reason - Revision 2008 with other tests by I.Q. Tests for the High Range

(Test index) Test name n r
(82) Reason110.89
(109) The Bonsai Test - Revision 2016260.84
(40) Reason Behind Multiple-Choice - Revision 2008960.84
(118) Divine Psychometry40.79
(48) Narcissus' last stand180.75
(36) Reflections In Peroxide240.74
(29) Words80.71
(21) Psychometric Qrosswords100.70
(49) The Hammer Of Test-Hungry40.69
(105) Space, Time, and Hyperspace - Revision 2016250.68
(0) Test of the Beheaded Man220.67
(41) The LAW - Letters And Words80.67
(112) Combined Numerical and Spatial sections of Test For Genius - Revision 2016240.66
(114) Dicing with death100.63
(31) Numerical section of The Marathon Test170.63
(1) Cartoons of Shock220.63
(28) The Test To End All Tests210.62
(47) Psychometrically Activated Grids Acerbate Neuroticism90.61
(84) Bonsai Test50.61
(35) Intelligence Quantifier by assessment300.59
(7) The Final Test170.59
(66) Test For Genius - Revision 2004170.57
(30) Verbal section of The Marathon Test160.56
(68) Numbers70.55
(45) Numerical and spatial sections of The Marathon Test170.55
(44) Associative LIMIT320.54
(33) Problems In Gentle Slopes of the first degree120.53
(42) The Marathon Test130.53
(27) Spatial section of Test For Genius - Revision 2004330.53
(113) The Piper's Test100.52
(2) Cooijmans Intelligence Test - Form 3380.51
(37) Problems In Gentle Slopes of the third degree240.51
(16) Lieshout International Mesospheric Intelligence Test370.49
(111) Test For Genius - Revision 2016210.48
(25) The Sargasso Test340.48
(3) Qoymans Multiple-Choice #5970.47
(57) Space, Time, and Hyperspace70.46
(87) Cooijmans Intelligence Test - Form 2100.45
(75) Analogies of Long Test For Genius50.44
(4) A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude250.41
(23) Gliaweb Riddled Intelligence Test - Revision 2011330.41
(117) The Hammer Of Test-Hungry - Revision 2013120.41
(10) Genius Association Test350.40
(62) Reason Behind Multiple-Choice100.40
(32) Spatial section of The Marathon Test170.40
(12) Cooijmans On-Line Test - Two-barrelled version200.39
(54) Test of Shock and Awe50.37
(26) Verbal section of Test For Genius - Revision 2004290.35
(110) Cooijmans Intelligence Test 5220.33
(80) Qoymans Multiple-Choice #4150.32
(103) Problems In Gentle Slopes of the second degree190.31
(18) The Nemesis Test220.31
(106) Cooijmans Intelligence Test - Form 4280.30
(108) Verbal section of Test For Genius - Revision 2016210.29
(104) The Final Test - Revision 2013130.27
(107) The Alchemist Test160.27
(19) Numerical section of Test For Genius - Revision 2010410.24
(39) Combined Numerical and Spatial sections of Test For Genius - Revision 2010210.24
(15) Letters90.19
(5) Daedalus Test150.15
(53) Qoymans Multiple-Choice #370.12
(63) Long Test For Genius40.11
(116) Gliaweb Riddled Intelligence Test (old version)100.11
(11) Isis Test360.09
(46) Labyrinthine LIMIT70.08
(55) Spatial Insight Test50.06
(43) Test For Genius - Revision 2010140.05
(83) KIT Intelligence Test - first attempts4-0.06
(79) Association subtest of Long Test For Genius5-0.08
(86) Evens4-0.45
(69) Odds4-0.74

Weighted average of correlations: 0.476 (N = 1369, weighted sum = 652.01)

Conservatively estimated minimum g loading: 0.69

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 4 score pairs. All known pairs are used, including possible floor/ceiling scores or outliers.

Correlation of Reason - Revision 2008 with tests by others

(Test index) Test name n r
(236) International High IQ Society Miscellaneous tests50.94
(239) Titan Test70.91
(238) 916 Test80.50
(218) Raven's Advanced Progressive Matrices (I.Q.)40.50
(217) G-test40.48
(235) Nonverbal Cognitive Performance Examination60.35
(223) Strict Logic Sequences Exam II60.27
(211) Culture Fair Numerical Spatial Examination - Final version50.26
(225) Logima Strictica 36100.24
(231) Mysterium Entrance Exam90.16
(242) Unknown and miscellaneous tests440.12
(234) Strict Logic Sequences Exam I180.04
(240) Strict Logic Spatial Exam 489-0.05
(246) Sequentia Numerica Form I4-0.60
(201) Wechsler Adult Intelligence Scales6-0.62
(220) Cattell Culture Fair5-0.94

Weighted average of correlations: 0.149 (N = 150, weighted sum = 22.37)

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 4 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 Reason - Revision 2008 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.

Typeng loading of Reason - Revision 2008 on that type
Verbal3160.66
Numerical730.52
Spatial1240.71
Logical260.68
Heterogeneous4770.67

N = 1016

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

Balanced g loading = 0.65

National medians for Reason - Revision 2008

Country n median score
Korea_South588.0
China586.0
Portugal285.5
Germany584.0
United_States2584.0
Spain580.0
Sweden380.0
Romania279.5
South_Africa279.5
Finland579.0
Canada478.5
Bulgaria273.5
Greece972.0
United_Kingdom570.0
India255.5

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 with national I.Q.'s of Reason - Revision 2008

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

Correlation of Reason - Revision 2008 with personal details

Personalia n r
Observed associative horizon100.46
Cooijmans Inventory of Neo-Marxist Attitudes130.34
P.S.I.A. Orderly - Revision 2007280.17
Mother's educational level940.17
P.S.I.A. Neurotic - Revision 2007280.16
Observed behaviour260.13
Father's educational level900.11
Year of birth990.08
P.S.I.A. Ethics factor - Revision 2007280.07
Sex1000.06
P.S.I.A. True - Revision 2007280.04
Educational level960.02
Disorders (own)950.02
P.S.I.A. Rare - Revision 200728-0.01
Disorders (parents and siblings)95-0.04
P.S.I.A. Rational - Revision 200728-0.08
P.S.I.A. Cruel - Revision 200728-0.10
P.S.I.A. Extreme - Revision 200728-0.11
P.S.I.A. Deviance factor - Revision 200728-0.16
P.S.I.A. Antisocial - Revision 200728-0.23
P.S.I.A. Aspergoid - Revision 200728-0.24
P.S.I.A. Introverted - Revision 200728-0.26
P.S.I.A. System factor - Revision 200728-0.29
Gifted Adult's Inventory of Aspergerisms21-0.31
P.S.I.A. Just - Revision 200728-0.32
P.S.I.A. Cold - Revision 200728-0.32

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)
00.69 (1369)NaN (0)
200.65 (1309)0.73 (8)
300.55 (1198)0.65 (77)
400.55 (1198)0.65 (77)
500.51 (1151)0.54 (120)
600.49 (1097)0.64 (190)
700.43 (977)0.62 (319)
800.38 (604)0.72 (759)
900.53 (86)0.68 (1179)
920.62 (69)0.68 (1305)
96NaN (0)0.69 (1369)

Reliability

Cronbach's alpha can not be computed for this test because its items are not scored uniformly.

Error

Scores by age

Age class n median score
70 to 74183.0
60 to 64281.5
55 to 59254.5
50 to 54582.0
45 to 491074.0
40 to 44980.0
35 to 39880.0
30 to 341484.0
25 to 292375.0
22 to 241485.0
20 or 21578.0
18 or 19475.0
17369.0

N = 100

Scores by year taken

Year taken n median score
2008787.0
2009865.5
20101084.0
2011779.0
2012572.0
2013787.0
2014573.0
2015378.0
20161076.5
2017875.0
2018677.0
2019780.0
2020982.0
2021780.0
2022191.0

ryear taken × median score = 0.25 (N = 100)

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.