Statistics of Cooijmans Inventory of Neo-Marxist Attitudes

Norms

These norms are based on a slightly corrected raw score mean and standard deviation.

Scores on Cooijmans Inventory of Neo-Marxist Attitudes as of 3 July 2021

Contents type: Personality test other than for mental ability.   Period: 2012-present

• n: 144
• Median: 18.8
• Quartile deviation: 14.0
• Range: 70.5
• Maximum possible: 80
• Male median: 17.0 (n = 131)
• Female median: 37.0 (n = 12)
• Resolution: 0.76 (1.08 if half points are frequently given)

The fact that the female median is so much higher than the male median (about 1.2 standard deviations higher) is one of the remarkable features of this test. The difference is statistically significant, and in fact the female scores are situated almost entirely in the upper half of the score distribution.

Scores by males

n = 131

Scores by females

n = 12

Correlation of Cooijmans Inventory of Neo-Marxist Attitudes with other tests by I.Q. Tests for the High Range

Weighted average of correlations: -0.154 (N = 364, weighted sum = -56.04)

Conservatively estimated minimum g loading: -0.39

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.

Notice that this is a tiny negative average correlation with I.Q. scores, and it may still be that there is no significant correlation, and almost certainly not a strong one.

Correlation of Cooijmans Inventory of Neo-Marxist Attitudes with tests by others

Weighted average of correlations: 0.031 (N = 76, weighted sum = 2.38)

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 Cooijmans Inventory of Neo-Marxist Attitudes 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.

N = 278

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

Balanced g loading = -0.24

National medians for Cooijmans Inventory of Neo-Marxist Attitudes

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 Cooijmans Inventory of Neo-Marxist Attitudes

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

• r = -0.04 (n = 89)

Correlation of Cooijmans Inventory of Neo-Marxist Attitudes with personal details

P.S.I.A. Just, Ethics, System, Rational, and Sex are the significant negative correlates of neo-Marxist attitudes, while Cruel is the only significant positive correlate in this table.

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.

Reliability

• Split-half (odd-even) = 0.97
• Split-half (other division) = 0.97
• Cronbach's alpha = 0.97

These are stunningly high reliabilities for a non-cognitive personality test, and in fact even higher than those of most I.Q. tests. They imply that the attitudes collected in the CINEMA are indeed a strongly correlating whole.

Error

• Standard error = 2.8 raw score points

Scores by age

N = 130

Scores by age - within females

N = 10

Scores by age - within males

N = 119

Scores by year taken

r_{year taken × median score} = -0.43 (N = 137)

Robustness and overall test quality

• Robustness by chronological rank = 0.73
• Robustness by month = 0.74 (r_{raw scores × months} = -0.10)

Item analysis

q should be understood as the proportion of candidates not agreeing with that item (wherein "neutral" is considered as being halfway between agreeing and not agreeing) and r is the item's correlation with total score.

The fact that all of the items have positive correlations, and that in almost all cases those are significant and sizeable, means that the attitudes contained in this inventory form a strongly correlating whole and a genuine behavioural dimension.

The conclusions

1. Females score much higher than males on neo-Marxist attitudes;
2. The inventory has very high reliability and very small error of measurement, and measures a genuine behavioural dimension;
3. P.S.I.A. Just, Ethics, System, Rational, and Sex correlate negatively with neo-Marxist attitudes, while P.S.I.A. Cruel is the only positive correlate;
4. There is very little to no significant correlation with I.Q. scores.

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