The sources of between-group variation in cognitive ability has been a source of controversy
for decades. In this pre-registered study, I tested the hypothesis that such differences are …

The cause (s) of ubiquitous cognitive differences between American self-identified
racial/ethnic groups (SIRES) is uncertain. Evolutionary-genetic models posit that ancestral …

Black and Hispanic children in the United States have lower mean cognitive test scores than
White children. The reasons for this are contested. The test score gap may be caused by …

Using data from the Philadelphia Neurodevelopmental Cohort, we examined whether
European ancestry predicted cognitive ability over and above both parental socioeconomic …

Objectives Debate about the cause of IQ score gaps between Black and White populations
has persisted within genetics, anthropology, and psychology. Recently, authors claimed …

Although much genetic research has addressed normal variation in intelligence, little is
known about the etiology of high cognitive abilities. Using data from 11,000 twin pairs (age …

Black and Hispanic children in the United States have lower mean cognitive test scores than
White children. The reasons for this are contested. The test score gap may be caused by …

The study analyzes whether genetic differences (“genetic distances”) help to explain cross-
national IQ differences being controlled for environmental factors. Genetic distances are an …

Previous studies have found significant associations between estimated autozygosity-the
proportion of an individual's genome contained in homozygous segments due to distant …

Human populations living during the Holocene underwent considerable microevolutionary
change. It has been theorized that the transition of Holocene populations into agrarianism …