Tests by Jason Betts (aggregate) statistics

Paul Cooijmans


These are statistics based on the scores on the tests by Jason Betts (aggregate) as reported by test candidates of I.Q. Tests for the High Range. Please keep the following in mind: As a result of candidates' tendency to report their higher scores while withholding lower ones, there may be an upward bias in the reported scores, while the possible correlation with other variables is reduced as a result of the restriction of range inherent to this incomplete reporting. Also, this report deals with a compound variable, wherein all the tests of a given author are combined. Such a compound variable, too, has reduced potential to correlate with any other variable because of the imperfect intercorrelations of its constituents.

Scores on Tests by Jason Betts (aggregate) as of 25 June 2022

137 *
139 *
143 *
144 **
145 **
146 *
147 *
148 ***
149 **
150 *
151 *
152 **
153 **
154 *
155 **
156 *
158 *
167 **
168 *

Correlation of Tests by Jason Betts (aggregate) with other mental ability tests

(Test index) Test name n r
(103) Problems In Gentle Slopes of the second degree40.84
(110) Cooijmans Intelligence Test 560.80
(247) Advanced Intelligence Test (Randy Myers)90.73
(260) Tests by Nikolaos Soulios (aggregate)60.72
(0) Test of the Beheaded Man50.70
(107) The Alchemist Test50.64
(262) Tests by James Dorsey50.58
(111) Test For Genius - Revision 201660.53
(216) Tests by Ivan Ivec (aggregate)120.51
(37) Problems In Gentle Slopes of the third degree60.44
(242) Unknown and miscellaneous tests180.40
(16) Lieshout International Mesospheric Intelligence Test50.36
(30) Verbal section of The Marathon Test40.33
(23) Gliaweb Riddled Intelligence Test - Revision 2011100.31
(18) The Nemesis Test50.31
(32) Spatial section of The Marathon Test40.29
(108) Verbal section of Test For Genius - Revision 201660.27
(19) Numerical section of Test For Genius - Revision 2010130.26
(231) Tests by Greg Grove (aggregate)40.20
(2) Cooijmans Intelligence Test - Form 3100.10
(234) Strict Logic Sequences Exam I (Jonathan Wai)60.09
(109) The Bonsai Test - Revision 201670.04
(112) Combined Numerical and Spatial sections of Test For Genius - Revision 20169-0.01
(105) Space, Time, and Hyperspace - Revision 20169-0.07
(27) Spatial section of Test For Genius - Revision 20046-0.07
(106) Cooijmans Intelligence Test - Form 48-0.08
(26) Verbal section of Test For Genius - Revision 20044-0.09
(44) Associative LIMIT5-0.16
(3) Qoymans Multiple-Choice #512-0.17
(7) The Final Test5-0.19
(24) Reason - Revision 200812-0.21
(40) Reason Behind Multiple-Choice - Revision 200812-0.25
(45) Numerical and spatial sections of The Marathon Test4-0.29
(25) The Sargasso Test8-0.37
(258) Tests by Mislav Predavec (aggregate)5-0.41
(36) Reflections In Peroxide5-0.43
(31) Numerical section of The Marathon Test4-0.44
(39) Combined Numerical and Spatial sections of Test For Genius - Revision 20105-0.45
(201) Wechsler Adult Intelligence Scales7-0.46
(4) A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude6-0.50
(10) Genius Association Test7-0.52
(223) Strict Logic Sequences Exam II (Jonathan Wai)4-0.73
(225) Logima Strictica 36 (Robert Lato)4-0.74
(259) Tests by Theodosis Prousalis (aggregate)4-0.85

Weighted average of correlations: 0.071 (N = 301, weighted sum = 21.51)

Conservatively estimated minimum g loading: 0.27

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.

Estimated loadings of Tests by Jason Betts (aggregate) 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 Tests by Jason Betts (aggregate) on that type

N = 176

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

Balanced g loading = 0.05

National medians for Tests by Jason Betts (aggregate)

Country n median score

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 Tests by Jason Betts (aggregate)

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

Correlation of Tests by Jason Betts (aggregate) with personal details

Personalia n r
P.S.I.A. Orderly - Revision 200750.92
P.S.I.A. System factor - Revision 200750.69
P.S.I.A. Just - Revision 200750.66
P.S.I.A. Rational - Revision 200750.51
P.S.I.A. Ethics factor - Revision 200750.51
P.S.I.A. Rare - Revision 200750.49
P.S.I.A. True - Revision 200750.48
Educational level220.44
P.S.I.A. Cold - Revision 200750.42
Father's educational level210.41
P.S.I.A. Introverted - Revision 200750.21
Gifted Adult's Inventory of Aspergerisms40.18
P.S.I.A. Deviance factor - Revision 200750.17
Mother's educational level210.14
P.S.I.A. Aspergoid - Revision 200750.13
P.S.I.A. Extreme - Revision 200750.09
Year of birth26-0.12
Disorders (own)23-0.18
Disorders (parents and siblings)22-0.37
P.S.I.A. Cruel - Revision 20075-0.53
P.S.I.A. Neurotic - Revision 20075-0.70
P.S.I.A. Antisocial - Revision 20075-0.73

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)
1370.27 (301)NaN (0)
145-0.43 (255)0.82 (8)
149.5-0.28 (91)0.72 (83)
1540.24 (15)0.58 (208)
168NaN (0)0.27 (301)