Spatial Insight Test - Statistics

© Paul Cooijmans


This test can no longer be taken, and most of its items are now included in The Marathon Test (in revised form where needed).

Scores on Spatial Insight Test as of 9 April 2022

Contents type: Spatial.   Period: 2003-2005

0 *
1 *
4 *
7 **
8 ********
9 **
10 ****
11 **
12 ***
14 **

Correlation of Spatial Insight Test with other tests by I.Q. Tests for the High Range

(Test index) Test name n r
(63) Long Test For Genius51.00
(53) Qoymans Multiple-Choice #370.99
(25) The Sargasso Test40.98
(83) KIT Intelligence Test - first attempts30.97
(35) Intelligence Quantifier by assessment50.93
(0) Test of the Beheaded Man50.89
(54) Test of Shock and Awe60.87
(5) Daedalus Test30.87
(57) Space, Time, and Hyperspace90.85
(52) Qoymans Multiple-Choice #230.82
(72) Qoymans Automatic Test #130.82
(18) The Nemesis Test30.82
(7) The Final Test100.80
(51) Qoymans Multiple-Choice #130.80
(28) The Test To End All Tests50.78
(16) Lieshout International Mesospheric Intelligence Test110.75
(75) Analogies of Long Test For Genius60.75
(71) Numerical Insight Test70.75
(80) Qoymans Multiple-Choice #4140.74
(44) Associative LIMIT80.68
(69) Odds30.65
(79) Association subtest of Long Test For Genius60.64
(62) Reason Behind Multiple-Choice90.62
(1) Cartoons of Shock50.61
(87) Cooijmans Intelligence Test - Form 290.61
(74) Cooijmans On-Line Test50.59
(10) Genius Association Test90.58

Weighted average of correlations: 0.763 (N = 166, weighted sum = 126.74)

Conservatively estimated minimum g loading: 0.87

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 Spatial Insight Test with tests by others

(Test index) Test name n r
(220) Cattell Culture Fair30.99
(235) Nonverbal Cognitive Performance Examination60.94
(240) Strict Logic Spatial Exam 4860.84
(211) Culture Fair Numerical Spatial Examination - Final version40.80
(236) International High IQ Society Miscellaneous tests30.67
(237) Sigma Test50.65
(225) Logima Strictica 3690.59

Weighted average of correlations: 0.762 (N = 36, weighted sum = 27.43)

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 Spatial Insight Test 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 Spatial Insight Test on that type

N = 189

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

Balanced g loading = 0.74

National medians for Spatial Insight Test

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 Spatial Insight Test

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

Correlation of Spatial Insight Test with personal details

Personalia n r
Educational level250.35
Father's educational level230.11
Mother's educational level230.06
Gifted Adult's Inventory of Aspergerisms7-0.13
Year of birth26-0.16
Disorders (parents and siblings)24-0.27
Disorders (own)25-0.31
Observed behaviour6-0.46
Observed associative horizon4-0.49

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)
00.76 (233)NaN (0)
70.75 (201)0.42 (12)
8.50.57 (108)0.69 (92)
100.58 (82)0.74 (179)
14NaN (0)0.76 (233)



Scores by age

Age class n median score
45 to 49110.0
40 to 44110.0
35 to 3948.5
30 to 34411.5
25 to 2958.0
22 to 2448.0
20 or 21111.0
18 or 1958.0

N = 26

Scores by year taken

Year taken n median score

ryear taken × median score = 0.87 (N = 26)

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.