Statistics of Father's educational level

Legenda

The educational levels reported by test candidates are encoded as follows:

• 0 = No formal education
• 1 = A few years primary school
• 2 = Primary school completed
• 3 = A few years secondary school
• 4 = Secondary school completed
• 5 = Bachelor
• 6 = Master
• 7 = Doctor

Scores on Father's educational level as of 12 November 2020

Contents type: Personal information.   

• n: 961
• Mean: 4.58
• Standard deviation: 1.47
• Range: 8.0
• Maximum possible: 7
• Male mean: 4.58 (n = 832)
• Female mean: 4.55 (n = 128)
• Intersexual mean: 5.00 (n = 1)
• Resolution: 0.20

Scores by males

n = 832

Scores by females

n = 128

Correlation of Father's educational level with other tests by I.Q. Tests for the High Range

Weighted average of correlations: 0.039 (N = 3404, weighted sum = 131.69)

Conservatively estimated minimum g loading: 0.20

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.

Correlation of Father's educational level with tests by others

Weighted average of correlations: 0.020 (N = 960, weighted sum = 19.41)

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.

Correlation of Father's educational level with other tests by I.Q. Tests for the High Range - for females

Weighted average of correlations: 0.204 (N = 115, weighted sum = 23.51)

Conservatively estimated minimum g loading among females: 0.45

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.

Estimated loadings of Father's educational level 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 = 2748

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

Balanced g loading = 0.16

National means for Father's educational level

For reasons of privacy, only countries with 2 or more candidates are included in this table. Ranking is based on the unrounded means, and then alphabetic.

Correlation with national I.Q.'s of Father's educational level

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

• r = -0.12 (n = 959)

Correlation of Father's educational level with personal details

Observation: There is a significant moderate positive correlation of Father's educational level with Mother's educational level, reflecting assortative mating, one presumes. Virtually the same correlation is seen below for both the female and the male candidates separately, which makes sense given that the assortative mating took place before the candidate (child) was conceived, and can therefore not have been affected by the sex of the candidate. The fact that this correlation is so alike within-sex confirms that it is genuine, and also confirms that the statistic was reported correctly on the whole.

Correlation with personal details of Father's educational level - within females

Correlation with personal details of Father's educational level - within males

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.

Observation: Only downward of Father's educational level 2 (primary school completed) does this statistic have noticeable g loading.

Conclusions

1. There is, on the whole, a tiny positive correlation of Father's educational level with candidate's high-range I.Q. test scores (it is in fact .02 to .04);
2. Within females, however, there is a small positive correlation of about .20;
3. Only downward of educational level 2 (primary school completed) there seems to be a somewhat higher correlation with I.Q.;
4. There is a significant moderate positive correlation of Father's educational level with Mother's educational level, reflecting assortative mating.

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