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[ODP] - Parents’ Income is a Poor Predictor of SAT Score

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For example, the main claim of the paper here is that parent income is a poor "predictor" of SAT. Now, imagine the null direct effect hides a non-zero effect under the common/indirect effect, then it is unknown what the total effect of parent income will be. But the author can make some assumptions, like I said. Marks (2013) gives a good illustration. Page 355, he gives the sibling correlation for income (.13-.21), education (.53-.55) and occupation (.31-.37) and test scores (.47-.48). Even if income may be lower in its reliability (since the author never said if these correlations are (dis)attenuated or not), i doubt it will make much difference. Whatever the case, if family background has big impact on income, a large sibling correlation will be expected. I can infer from this that if family SES has poor impact on the children future income, then the family income variable as a proxy for family SES will probably have low impact on either SAT, education or occupation because "family income" is a poor measure of family background. In this case, it is unlikely that parent income will have a big impact on SAT through its indirect effect on, say, educational attainment of the child. Thus it will not contradict the main idea of the article.

Marks, Gary (2013) Reproduction of economic inequalities: Are the figures for the United States and United Kingdom too high? Comparative Social Research 30:341-363.

EDIT :

See here.

Herrnstein's Syllogism: Genetic and Shared Environmental Influences on IQ, Education, and Income.

Quote:The heritability estimates from model 7 are 0.64 for IQ, 0.68 for education, and 0.42 for income. The majority of the total genetic variation in IQ (55%) and education (75%) came from the common genetic variable, with the rest coming from the specific genetic factors. In contrast, the majority of the total genetic variance for income came from the specific genetic factor (71%). The common shared environmental factor accounted for 0.08 of the variance in income, 0.18 in education, and 0.23 in IQ.

This, once again, proves that income is a poor reflectance of family (environmental) background, as seen by the low shared-environment effect (although you need to SQRT it to get the correct effect size).
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Messages In This Thread
[ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-04, 00:49:06
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Duxide - 2014-Jun-04, 10:05:19
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-08, 01:56:17
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Philbrick Bastinado - 2014-Jun-08, 01:59:35
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-08, 02:40:46
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-08, 15:27:37
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-11, 07:01:57
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-11, 21:17:30
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by csdunkel - 2014-Jun-11, 22:42:00
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-11, 23:33:21
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-14, 23:04:00
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-12, 00:22:29
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-15, 03:03:29
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-15, 14:57:16
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-15, 15:49:58
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-16, 00:34:23
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-15, 17:12:11
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-16, 01:51:23
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-17, 04:11:11
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-16, 03:53:08
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-18, 07:03:21
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-18, 18:06:28
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-19, 05:38:32
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jun-21, 08:49:53
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jun-24, 16:14:23
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jun-30, 18:18:16
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jul-01, 03:47:55
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Duxide - 2014-Jul-01, 14:08:44
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jul-02, 12:45:15
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jul-02, 17:51:06
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Duxide - 2014-Jul-02, 18:15:28
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jul-03, 01:29:16
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jul-03, 02:52:39
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Meng Hu - 2014-Jul-03, 03:25:11
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jul-03, 16:05:01
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jul-03, 22:09:13
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Jul-03, 23:13:46
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by nooffensebut - 2014-Jul-04, 01:24:51
RE: [ODP] - Parents’ Income is a Poor Predictor of SAT Score - by Emil - 2014-Nov-06, 02:52:41
 
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