Quote by Charles Spearman
"The mind that thinks deeply about one thing gains facility in many things."
"The mind that thinks deeply about one thing gains facility in many things."
"Intelligence is not a single, unitary ability, but rather a general factor that influences performance across diverse cognitive tasks."
"The human mind possesses a general cognitive ability that affects success in all intellectual endeavors."
"Education should aim to develop the general factor of intelligence that underlies all mental abilities."
"Correlation analysis reveals the hidden structures of human thought and ability."