Statistics of Gliaweb Riddled Intelligence Test - Revision 2011

© Paul Cooijmans

Scores on Gliaweb Riddled Intelligence Test - Revision 2011 as of 12 August 2020

Contents type: Verbal, numerical, spatial, logical.   Period: 2011-present

10 *
11 *
18 *
20 *
21 **
22 ***
23 *
24 ****
25 ***
26 ***
27 **
28 *****
29 *******
30 ********
31 **********
32 ********************
33 ***************
34 *************
35 **********************
36 ******************
37 ********
38 ***********
39 *****
40 *****

Scores by males

n = 154

10 *
11 *
18 *
20 *
21 **
22 ***
23 *
24 **
25 **
26 ***
27 *
28 *****
29 ******
30 *******
31 **********
32 *****************
33 **************
34 *************
35 ********************
36 *****************
37 ********
38 **********
39 *****
40 ****

Scores by females

n = 14

24 **
25 *
27 *
29 *
30 *
32 ***
35 **
36 *
38 *
40 *

Correlation of Gliaweb Riddled Intelligence Test - Revision 2011 with other tests by I.Q. Tests for the High Range

(Test index) Test name n r
(113) The Piper's Test40.98
(21) Psychometric Qrosswords40.93
(42) The Marathon Test100.91
(3) Qoymans Multiple-Choice #5260.90
(35) Intelligence Quantifier by assessment130.88
(28) The Test To End All Tests110.85
(30) Verbal section of The Marathon Test130.84
(107) The Alchemist Test110.83
(43) Test For Genius - Revision 2010120.81
(22) Gliaweb Raadselachtig Analogieënproefwerk40.81
(114) Dicing with death40.81
(45) Numerical and spatial sections of The Marathon Test140.79
(32) Spatial section of The Marathon Test140.78
(48) Narcissus' last stand110.77
(0) Test of the Beheaded Man110.75
(31) Numerical section of The Marathon Test140.73
(40) Reason Behind Multiple-Choice - Revision 2008260.71
(106) Cooijmans Intelligence Test - Form 4310.70
(27) Spatial section of Test For Genius - Revision 2004180.70
(39) Combined Numerical and Spatial sections of Test For Genius - Revision 2010160.68
(47) Psychometrically Activated Grids Acerbate Neuroticism40.64
(18) The Nemesis Test70.60
(36) Reflections In Peroxide120.59
(7) The Final Test60.59
(26) Verbal section of Test For Genius - Revision 2004150.56
(2) Cooijmans Intelligence Test - Form 3340.56
(37) Problems In Gentle Slopes of the third degree140.51
(1) Cartoons of Shock110.50
(111) Test For Genius - Revision 2016100.48
(108) Verbal section of Test For Genius - Revision 2016100.47
(19) Numerical section of Test For Genius - Revision 2010260.46
(25) The Sargasso Test160.44
(12) Cooijmans On-Line Test - Two-barrelled version130.42
(110) Cooijmans Intelligence Test 5110.41
(33) Problems In Gentle Slopes of the first degree90.40
(41) The LAW - Letters And Words70.40
(4) A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude100.40
(109) The Bonsai Test - Revision 2016140.39
(24) Reason - Revision 2008260.36
(112) Combined Numerical and Spatial sections of Test For Genius - Revision 2016110.34
(103) Problems In Gentle Slopes of the second degree120.34
(11) Isis Test120.31
(105) Space, Time, and Hyperspace - Revision 2016110.31
(29) Words70.27
(104) The Final Test - Revision 201390.23
(117) The Hammer Of Test-Hungry - Revision 201380.20
(16) Lieshout International Mesospheric Intelligence Test190.17
(10) Genius Association Test210.05
(5) Daedalus Test6-0.03
(15) Letters8-0.03
(44) Associative LIMIT18-0.10

Weighted average of correlations: 0.532 (N = 664, weighted sum = 353.50)

Conservatively estimated minimum g loading: 0.73

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 Gliaweb Riddled Intelligence Test - Revision 2011 with tests by others

(Test index) Test name n r
(234) Strict Logic Sequences Exam I70.93
(247) Advanced Intelligence Test40.81
(225) Logima Strictica 3640.72
(223) Strict Logic Sequences Exam II40.66
(201) Wechsler Adult Intelligence Scales50.53
(220) Cattell Culture Fair40.36
(242) Unknown and miscellaneous tests360.10
(246) Sequentia Numerica Form I50.06

Weighted average of correlations: 0.339 (N = 69, weighted sum = 23.40)

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 Gliaweb Riddled Intelligence Test - Revision 2011 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 Gliaweb Riddled Intelligence Test - Revision 2011 on that type
Verbal1410.73
Numerical400.74
Spatial620.70
Logical320.53
Heterogeneous2360.73

N = 511

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

Balanced g loading = 0.69

National medians for Gliaweb Riddled Intelligence Test - Revision 2011

Country n median score
China337.0
Italy336.0
Bulgaria335.0
France335.0
Germany2235.0
Turkey335.0
Australia334.0
Romania234.0
Sweden934.0
United_Kingdom834.0
Brazil233.0
India233.0
Netherlands333.0
Slovenia333.0
United_States5333.0
Canada732.0
Finland432.0
Spain532.0
South_Africa330.0
Mexico229.5
Denmark227.0
Korea_South225.0

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 with national I.Q.'s of Gliaweb Riddled Intelligence Test - Revision 2011

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

Correlation of Gliaweb Riddled Intelligence Test - Revision 2011 with personal details

Personalia n r
P.S.I.A. Orderly - Revision 2007170.45
P.S.I.A. True - Revision 2007170.43
P.S.I.A. Ethics factor - Revision 2007170.36
Educational level1630.27
P.S.I.A. Rational - Revision 2007170.27
Observed behaviour100.22
Cooijmans Inventory of Neo-Marxist Attitudes120.20
P.S.I.A. Neurotic - Revision 2007170.16
P.S.I.A. System factor - Revision 2007170.14
Mother's educational level1530.13
P.S.I.A. Just - Revision 2007170.12
P.S.I.A. Introverted - Revision 2007170.12
Sex1690.07
Father's educational level1560.02
P.S.I.A. Cold - Revision 200717-0.05
P.S.I.A. Deviance factor - Revision 200717-0.10
P.S.I.A. Extreme - Revision 200717-0.10
P.S.I.A. Cruel - Revision 200717-0.10
Disorders (parents and siblings)162-0.11
Gifted Adult's Inventory of Aspergerisms13-0.12
Year of birth167-0.14
P.S.I.A. Aspergoid - Revision 200717-0.17
Disorders (own)163-0.23
P.S.I.A. Rare - Revision 200717-0.24
P.S.I.A. Antisocial - Revision 200717-0.43

Correlation with personal details of Gliaweb Riddled Intelligence Test - Revision 2011 - within females

Personalia n r
Disorders (own)140.58
Mother's educational level140.38
Year of birth140.31
Disorders (parents and siblings)140.24
Father's educational level140.15
Educational level140.05

Correlation with personal details of Gliaweb Riddled Intelligence Test - Revision 2011 - within males

Personalia n r
P.S.I.A. Orderly - Revision 2007170.45
P.S.I.A. True - Revision 2007170.43
P.S.I.A. Ethics factor - Revision 2007170.36
Educational level1480.29
P.S.I.A. Rational - Revision 2007170.27
Observed behaviour100.22
Cooijmans Inventory of Neo-Marxist Attitudes120.20
P.S.I.A. Neurotic - Revision 2007170.16
P.S.I.A. System factor - Revision 2007170.14
Mother's educational level1380.13
P.S.I.A. Just - Revision 2007170.12
P.S.I.A. Introverted - Revision 2007170.12
Father's educational level1410.02
P.S.I.A. Cold - Revision 200717-0.05
P.S.I.A. Deviance factor - Revision 200717-0.10
P.S.I.A. Extreme - Revision 200717-0.10
P.S.I.A. Cruel - Revision 200717-0.10
Disorders (parents and siblings)147-0.14
P.S.I.A. Aspergoid - Revision 200717-0.17
Year of birth152-0.18
Gifted Adult's Inventory of Aspergerisms11-0.23
P.S.I.A. Rare - Revision 200717-0.24
Disorders (own)148-0.33
P.S.I.A. Antisocial - Revision 200717-0.43

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)
00.73 (664)NaN (0)
230.64 (570)0.86 (32)
25.50.49 (482)0.70 (103)
280.49 (471)0.69 (125)
30.50.58 (386)0.75 (226)
330.29 (235)0.70 (404)
35.50.60 (82)0.69 (485)
380.93 (5)0.72 (648)
42NaN (0)0.73 (664)

Reliability

Remark: Reliability is a bit low, and this is caused by the easy nature of the test, as a result of which most of the scores are concentrated in a fairly small part of the test's possible range. This is also a cause of the somewhat low g loading. The easiness of the test also lowers overall test quality.

Error

Scores by age

Age class n median score
65 to 69233.5
60 to 64435.0
55 to 59335.0
50 to 54531.0
45 to 49735.0
40 to 441134.0
35 to 391736.0
30 to 342335.0
25 to 292531.0
22 to 241734.0
20 or 211335.0
18 or 191732.0
17833.0
16532.0
15832.5
14135.0
13228.0

N = 168

Scores by age - within females

Age class n median score
50 to 54125.0
35 to 39232.0
30 to 34231.5
25 to 29329.0
22 to 24138.0
20 or 21231.0
18 or 19124.0
17135.0
14135.0

N = 14

Scores by age - within males

Age class n median score
65 to 69233.5
60 to 64435.0
55 to 59335.0
50 to 54431.5
45 to 49735.0
40 to 441134.0
35 to 391536.0
30 to 342135.0
25 to 292231.0
22 to 241534.0
20 or 211135.0
18 or 191633.0
17733.0
16532.0
15832.5
13228.0

N = 153

Scores by year taken

Year taken n median score
2011136.0
2012733.0
20131430.5
20141732.0
20151933.0
20162134.0
20172932.0
20182834.0
20192434.0
20201034.0

ryear taken × median score = 0.09 (N = 170)

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.