Statistics of Reflections In Peroxide

© Paul Cooijmans

Scores on Reflections In Peroxide as of 1 September 2019

Contents type: Numerical, spatial.   Period: 2010-present

1 ***
3 *
4 ***
5 *
6 *****
7 *
8 ***
10 *
11 *

Correlation of Reflections In Peroxide with other tests by Paul Cooijmans

(Test index) Test name n r
(21) Psychometric Qrosswords51.00
(87) Cooijmans Intelligence Test - Form 230.99
(112) Combined Numerical and Spatial sections of Test For Genius - Revision 201670.97
(109) The Bonsai Test - Revision 201650.97
(42) The Marathon Test70.97
(107) The Alchemist Test40.96
(82) Reason30.95
(105) Space, Time, and Hyperspace - Revision 201680.95
(43) Test For Genius - Revision 201070.94
(30) Verbal section of The Marathon Test70.93
(111) Test For Genius - Revision 201670.93
(47) Psychometrically Activated Grids Acerbate Neuroticism50.93
(46) Labyrinthine LIMIT40.93
(48) Narcissus' last stand170.92
(66) Test For Genius - Revision 200450.91
(39) Combined Numerical and Spatial sections of Test For Genius - Revision 2010100.91
(27) Spatial section of Test For Genius - Revision 2004110.90
(1) Cartoons of Shock60.90
(0) Test of the Beheaded Man100.89
(16) Lieshout International Mesospheric Intelligence Test100.89
(31) Numerical section of The Marathon Test100.89
(45) Numerical and spatial sections of The Marathon Test100.87
(68) Numbers30.87
(44) Associative LIMIT70.85
(26) Verbal section of Test For Genius - Revision 2004100.85
(35) Intelligence Quantifier by assessment100.84
(106) Cooijmans Intelligence Test - Form 480.83
(2) Cooijmans Intelligence Test - Form 3110.83
(37) Problems In Gentle Slopes of the third degree50.82
(62) Reason Behind Multiple-Choice30.82
(15) Letters30.82
(41) The LAW - Letters And Words30.81
(29) Words30.81
(32) Spatial section of The Marathon Test100.81
(33) Problems In Gentle Slopes of the first degree50.79
(103) Problems In Gentle Slopes of the second degree70.79
(19) Numerical section of Test For Genius - Revision 2010130.79
(40) Reason Behind Multiple-Choice - Revision 2008130.78
(12) Cooijmans On-Line Test - Two-barrelled version100.75
(4) A Paranoiac's Torture: Intelligence Test Utilizing Diabolic Exactitude100.73
(28) The Test To End All Tests170.73
(11) Isis Test110.73
(110) Cooijmans Intelligence Test 550.73
(18) The Nemesis Test100.73
(24) Reason - Revision 2008130.71
(108) Verbal section of Test For Genius - Revision 201670.68
(23) Gliaweb Riddled Intelligence Test - Revision 201180.66
(7) The Final Test60.64
(3) Qoymans Multiple-Choice #5130.62
(25) The Sargasso Test90.62
(104) The Final Test - Revision 201360.60
(10) Genius Association Test80.59
(80) Qoymans Multiple-Choice #430.54
(5) Daedalus Test80.43
(49) The Hammer Of Test-Hungry3-1.00

Weighted average of correlations: 0.794 (weighted sum: 334.91)

Conservatively estimated minimum g loading: 0.89

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 Reflections In Peroxide with tests by others

(Test index) Test name n r
(239) Titan Test30.99
(234) Strict Logic Sequences Exam I30.79
(242) Unknown and miscellaneous tests70.37

Weighted average of correlations: 0.608 (weighted sum: 7.91)

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 Reflections In Peroxide 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 Reflections In Peroxide on that type
Verbal0.85
Numerical0.91
Spatial0.94
Logical0.80
Heterogeneous0.89

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

Balanced g loading = 0.88

National medians for Reflections In Peroxide

Country n median score
Greece26.5
Canada26.0
United_States56.0
Japan24.5
Germany23.5

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 Reflections In Peroxide

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

Correlation of Reflections In Peroxide with personal details

Personalia n r
Observed associative horizon31.00
P.S.I.A. Neurotic70.57
P.S.I.A. True70.45
P.S.I.A. Cold70.39
Sex190.38
P.S.I.A. Ethics factor70.37
P.S.I.A. Rare70.33
P.S.I.A. Aspergoid70.33
P.S.I.A. Introverted70.33
Educational level180.30
P.S.I.A. System factor60.23
P.S.I.A. Just70.23
Gifted Adult's Inventory of Aspergerisms70.22
Mother's educational level170.19
P.S.I.A. Antisocial70.13
Observed behaviour70.11
P.S.I.A. Deviance factor70.07
P.S.I.A. Cruel70.06
Year of birth190.04
P.S.I.A. Rational70.00
P.S.I.A. Orderly7-0.05
Father's educational level17-0.14
Disorders (own)17-0.43
Disorders (parents and siblings)17-0.45
P.S.I.A. Extreme7-0.56

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)
00.89 (422)NaN (0)
40.74 (305)0.87 (115)
60.61 (225)0.90 (232)
70.73 (106)0.88 (274)
18NaN (0)0.89 (422)

Reliability

The brevity of this test (18 items) depresses its reliability.

Error

Scores by age

Age class n median score
50 to 5411.0
45 to 4918.0
40 to 44110.0
35 to 3922.5
30 to 3427.0
25 to 2956.0
22 to 2455.0
20 or 2126.0

Scores by year taken

Year taken n median score
201027.0
201126.5
201228.0
201331.0
201424.0
201516.0
201626.0
201745.5
201918.0

ryear taken × median score = 0.08 (n = 19)

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. This test has not received enough submissions yet for meaningful item analysis.