Crime measurement and the black-white crime gap
A lot of instant experts have appeared on the black-white crime question. Many of these are somewhat unfamiliar with the quite large literature on the topic. The people who mostly…
Shuey (1966)
Audrey M. Shuey (who even has a barebones Wikipedia page) is one of the most important female early researchers in intelligence research along with Barbara Burks and Leta Hollingworth. Shuey,…
Magic (American) Racism Theory
Aside from the usual Magic Dirt Theory, there is also the Magic (American) Racism Theory. James Flynn explains the conundrum for environmentalists: There is no doubt that high h² [heritability]…
New paper out: Filling in the Gaps: The Association between Intelligence and Both Color and Parent-Reported Ancestry in the National Longitudinal Survey of Youth 1997
We've got a new important paper out in the special issue on race and intelligence in Psych: Hu et al, 2019, Filling in the Gaps: The Association between Intelligence and…
The mysterious PC1 ancestry component
Mehta, C. M., Malins, J. G., Noble, K. G., & Gruen, J. R. (2017). Cortical area and subcortical volume mediate the effect of parental education and adverse experiences on cognitive…
How long do we need affirmative action?
1976, Constance Baker Motley, African American judge: Judicial predictions of reduction or elimination of the RAG through color - based decisions approached the l udicrous. In rendering the decisive vote…
The original texts of the Eyferth study
Often discussed, occasionally cited, but rarely read -- certainly a highly suspicious combo -- I post here the original German language final version (we think): Eyferth, K. (1961). Leistungen verschiedener…
Comments on Fagan and Holland (2007)’s racial equality paper
Someone sent me some questions on this study: Fagan, J. F., & Holland, C. R. (2007). Racial equality in intelligence: Predictions from a theory of intelligence as processing. Intelligence, 35(4),…
The US Black-White cognitive ability gap in 1850, 1870 and 1900 censuses
Using the crude measures of literacy and numeracy discussed in a previous post, it is possible to quantify the cognitive ability gap for US Black-White in the 1800s. The data…
How to do a meta-analysis of Black-White IQ gap
https://twitter.com/HoustonEuler/status/837894199814955008 There's been some talk about whether the SIRE (self-identified race/ethnicity) gaps are closing and if so how much and when they did that. The matter is complicated for many…