Carol Nagy (Jacklin) was a pioneer scholar of gender as well as a steadfast advocate for women's rights. She was born in Chicago in February 23, 1939. She died of cancer on August 8, 2011, at the age of 72. Carol was a developmental psychologist whose work focused mainly on babies and preschool-age children. She is best known as the co-author (with Eleanor Maccoby) of the groundbreaking volume The Psychology of Sex Differences (Stanford University Press, 1974).