Statistics of Gliaweb Riddled Intelligence Test - Revision 2011

© March 2016 Paul Cooijmans

Norms

Scores on Gliaweb Riddled Intelligence Test - Revision 2011

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

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

Scores by males

n = 55

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

Scores by females

n = 5

24 *
25 *
27 *
32 *
36 *

Correlation of Gliaweb Riddled Intelligence Test - Revision 2011 with other tests by Paul Cooijmans

(Test index) Test name n r
(35) Intelligence Quantifier by assessment80.98
(42) The Marathon Test50.96
(31) Numerical section of The Marathon Test50.94
(30) Verbal section of The Marathon Test50.94
(0) Test of the Beheaded Man40.92
(3) Qoymans Multiple-Choice #5100.91
(45) Numerical and spatial sections of The Marathon Test50.91
(28) The Test To End All Tests40.88
(32) Spatial section of The Marathon Test50.86
(48) Narcissus' last stand40.84
(43) Test For Genius - Revision 2010100.83
(12) Cooijmans On-Line Test - Two-barrelled version40.83
(106) Cooijmans Intelligence Test - Form 4110.82
(27) Spatial section of Test For Genius - Revision 2004140.80
(107) The Alchemist Test50.79
(2) Cooijmans Intelligence Test - Form 3150.77
(36) Reflections In Peroxide40.77
(39) Combined Numerical and Spatial sections of Test For Genius - Revision 2010130.73
(18) The Nemesis Test40.70
(1) Cartoons of Shock80.70
(26) Verbal section of Test For Genius - Revision 2004120.68
(40) Reason Behind Multiple-Choice - Revision 2008100.62
(103) Problems In Gentle Slopes of the second degree50.55
(19) Numerical section of Test For Genius - Revision 2010150.53
(15) Letters60.48
(10) Genius Association Test110.45
(41) The LAW - Letters And Words60.39
(11) Isis Test60.34
(16) Lieshout International Mesospheric Intelligence Test80.34
(24) Reason - Revision 2008110.27
(29) Words60.26
(4) A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude40.13
(44) Associative LIMIT80.10
(33) Problems In Gentle Slopes of the first degree50.08
(25) The Sargasso Test4-0.37

Weighted average of correlations: 0.628

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 3 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
(246) Sequentia Numerica Form I30.99
(234) Strict Logic Sequences Exam I40.93
(247) Advanced Intelligence Test30.77
(242) Unknown and miscellaneous tests180.09

Weighted average of correlations: 0.381

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 3 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.

Typeg loading of Gliaweb Riddled Intelligence Test - Revision 2011 on that type
Verbal0.79
Numerical0.79
Spatial0.82
Logical0.52
Heterogeneous0.77

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

Balanced g loading = 0.74

National medians for Gliaweb Riddled Intelligence Test - Revision 2011

Country n median score
Germany736.0
United_Kingdom235.5
Sweden335.0
Italy233.0
United_States2133.0
Spain432.0
South_Africa229.5
Canada226.5

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 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. Orderly50.97
P.S.I.A. Ethics factor60.78
P.S.I.A. True50.72
P.S.I.A. Introverted50.54
P.S.I.A. Rational50.53
Cooijmans Inventory of Neo-Marxist Attitudes60.42
Educational level590.37
Observed behaviour40.25
P.S.I.A. Cold50.21
Sex600.14
P.S.I.A. System factor50.13
P.S.I.A. Just50.09
Mother's educational level560.02
Father's educational level55-0.09
Gifted Adult's Inventory of Aspergerisms7-0.11
P.S.I.A. Extreme5-0.13
Candidate's self-estimated I.Q.35-0.22
P.S.I.A. Neurotic5-0.24
Disorders (parents and siblings)59-0.25
P.S.I.A. Deviance factor6-0.29
Year of birth60-0.30
P.S.I.A. Aspergoid5-0.31
Disorders (own)59-0.49
P.S.I.A. Rare5-0.56
P.S.I.A. Cruel5-0.60
P.S.I.A. Antisocial5-0.80

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

Personalia n r
Father's educational level50.64
Educational level50.56
Mother's educational level50.49
Candidate's self-estimated I.Q.40.35
Disorders (own)50.31
Disorders (parents and siblings)50.31
Year of birth5-0.02

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

Personalia n r
P.S.I.A. Orderly50.97
P.S.I.A. Ethics factor60.78
P.S.I.A. True50.72
P.S.I.A. Introverted50.54
P.S.I.A. Rational50.53
Cooijmans Inventory of Neo-Marxist Attitudes60.42
Educational level540.38
Observed behaviour40.25
P.S.I.A. Cold50.21
P.S.I.A. System factor50.13
P.S.I.A. Just50.09
Mother's educational level510.02
Father's educational level50-0.11
P.S.I.A. Extreme5-0.13
Gifted Adult's Inventory of Aspergerisms6-0.18
P.S.I.A. Neurotic5-0.24
Candidate's self-estimated I.Q.31-0.27
Disorders (parents and siblings)54-0.29
P.S.I.A. Deviance factor6-0.29
P.S.I.A. Aspergoid5-0.31
Year of birth55-0.32
Disorders (own)54-0.54
P.S.I.A. Rare5-0.56
P.S.I.A. Cruel5-0.60
P.S.I.A. Antisocial5-0.80

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)
00.80 (270)NaN (0)
260.65 (157)0.56 (86)
29.50.75 (133)0.67 (114)
330.44 (42)0.71 (213)
340.71 (35)0.71 (215)
350.59 (33)0.73 (232)
360.61 (9)0.77 (253)
36.51.00 (4)0.77 (253)
42NaN (0)0.80 (270)

Reliability

Error

Scores by age

Age class n median score
65 to 69133.0
60 to 64235.0
50 to 54228.0
45 to 49735.0
40 to 44335.0
35 to 39637.0
30 to 34935.0
25 to 29729.0
22 to 24634.0
20 or 21332.0
18 or 19724.0
17230.5
16229.0
15231.5
13134.0

Scores by year taken

Year taken n median score
2011136.0
2012733.0
20131430.5
20141732.0
20151933.0
2016237.0

ryear taken × median score = 0.14 (n = 60)

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.