In a recent theoretical article, I proposed that the efficiency of mitochondrial functioning is the most fundamental biological mechanism contributing to individual differences in general intelligence ("g;" Geary, 2018). The hypothesis accommodates other contributing mechanisms at higher levels of analysis (e.g., brain networks), and is…

The collection of studies in this special issue make an important contribution to our understanding and measurement of the core cognitive and noncognitive factors that influence children's emerging quantitative competencies. The studies also illustrate how the field has matured, from a time when the quantitative competencies of infants and young…

Commentators' questions about the utility of an evolutionarily informed approach to children's schooling are addressed. I begin with discussion of our knowledge of the organization of evolved folk domains and clarify my proposals as to how evolved learning and motivational biases might influence the acquisition of nonevolved academic competencies.…