Which psychologist's research focused on the link between heredity and intelligence?

Francis Galton is recognized for his pioneering research in the area of the relationship between heredity and intelligence. He was one of the first psychologists to suggest that intelligence is largely inherited and to investigate the extent to which genetic factors influence intellectual abilities. His work laid the groundwork for future studies in psychometrics and the nature versus nurture debate, emphasizing the importance of understanding how genetics can shape cognitive capabilities. Galton conducted studies on family lineages and aimed to quantify intelligence, introducing concepts such as eugenics, which sought to improve human populations through controlled breeding. His findings influenced later psychologists and shaped the understanding of intelligence as a complex interplay of genetics and environment.