Preliminary norms Verbal Insight Test

© December 2014 Paul Cooijmans

Note

This test can no longer be taken but is now, in revised form, part of The Marathon Test.

Preliminary norms (G = # right)

Protonorm = .9524 × G + 220

Scores on Verbal Insight Test

Contents type: Verbal.   Period: 2003-2004

173 *
273 *
329 *
332 *

Remark: This number of scores is too low to produce good statistics, but for informational purposes the statistics that can be computed are provided still.

Correlation of Verbal Insight Test with other tests by Paul Cooijmans

(Test index) Test name n r
(16) Lieshout International Mesospheric Intelligence Test21.00
(26) Verbal section of Test For Genius - Revision 200421.00
(27) Spatial section of Test For Genius - Revision 200421.00
(44) Associative LIMIT21.00
(54) Test of Shock and Awe21.00
(66) Test For Genius - Revision 200421.00
(57) Space, Time, and Hyperspace30.96
(63) Long Test For Genius30.95
(75) Analogies of Long Test For Genius30.94
(79) Association subtest of Long Test For Genius30.94
(7) The Final Test40.91
(10) Genius Association Test30.77
(1) Cartoons of Shock30.24
(72) Qoymans Automatic Test #13-1.00
(28) The Test To End All Tests2-1.00
(50) Qoymans Automatic Test #22-1.00

Weighted average of correlations: 0.563

Conservatively estimated minimum g loading: 0.75

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

Correlation of Verbal Insight Test with tests by others

(Test index) Test name n r
(231) Mysterium Entrance Exam21.00
(234) Strict Logic Sequences Exam I21.00
(235) Nonverbal Cognitive Performance Examination30.97
(242) Unknown tests4-0.86
(236) International High IQ Society Miscellaneous tests3-0.99
(218) Raven's Advanced Progressive Matrices (I.Q.)2-1.00
(237) Sigma Test2-1.00

Weighted average of correlations: -0.194

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 2 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 Verbal 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.

Typeg loading of Verbal Insight Test on that type
Verbal0.83
Spatial0.99
Heterogeneous-0.48

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

Balanced g loading = 0.45

Correlation with national I.Q.'s of Verbal Insight Test

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

Correlation of Verbal Insight Test with personal details

Personalia n r
P.S.I.A. Ethics factor30.99
P.S.I.A. System factor30.16
P.S.I.A. Deviance factor30.00
Educational level3-0.16
Disorders (own)3-0.16
Disorders (parents and siblings)3-0.16
Year of birth4-0.75
Mother's educational level3-0.94

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)
00.75 (41)NaN (0)
276.75-1.00 (6)0.82 (12)
428NaN (0)0.75 (41)

Reliability

Error

Scores by age

Age class n median score
35 to 391329.0
30 to 341332.0
20 or 211173.0
171273.0

Scores by year taken

Year taken n median score
20044301.0

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.