http://psycnet.apa.org/record/2010-04139-002

https://pdfs.semanticscholar.org/6ea8/cb828abfa2af89dbb9d14a875ed2c968b685.pdf

http://www.truthjustice.net/politics/blacks-and-whites-with-the-same-iq-still-differ-a-lot/

https://humanvarieties.org/2013/12/08/spearmans-hypothesis-and-racial-differences-on-the-das-ii/

https://humanvarieties.org/category/black-white-iq-gap/page/3/

https://humanvarieties.org/2015/07/11/bifactor-model-investigation-of-spearmans-hypothesis/

https://humanvarieties.org/2017/07/01/measurement-error-regression-to-the-mean-and-group-differences/

https://humanvarieties.org/2015/01/02/the-bell-curve-20-years-after/

https://humanvarieties.org/2014/08/25/the-elusive-x-factor-or-why-jonathan-kaplan-is-wrong-about-race-and-iq/

https://humanvarieties.org/2014/05/15/research-on-genetic-g-and-differential-heritabilities/