Hazel Rose Markus is an American social psychologist and cultural scientist whose research changed how psychology understands identity, motivation, and human difference. Her central insight is that the self is neither an isolated inner object nor a universal structure functioning…

Viktor Frankl was an Austrian neurologist, psychiatrist, philosopher, and Holocaust survivor who made the search for meaning a central subject in modern psychology. He founded logotherapy and existential analysis, an approach based on the idea that people are motivated not…

Émile Durkheim was a French sociologist, educator, and social theorist who helped establish sociology as an independent academic discipline. At a time when human behavior was commonly explained through philosophy, biology, individual psychology, or moral judgment, Durkheim argued that society…

Erving Goffman was a Canadian-born sociologist whose observation of ordinary encounters transformed the study of identity, institutions, stigma, and public behavior. Instead of beginning with governments, economies, or large organizations, he examined the smaller situations through which social reality is…

Marshall McLuhan was a Canadian literary scholar, communication theorist, and public intellectual whose ideas transformed the study of media. Long before smartphones and social networks, he argued that technologies do more than transmit information. They reorganize perception, reshape institutions, and…

Henri Tajfel was one of the most influential social psychologists of the twentieth century, changing how researchers understand prejudice, discrimination, belonging, and collective action. Best known for developing social identity theory with John Turner, Tajfel argued that people do not…

Mark R. Leary is an American social and personality psychologist whose work transformed the scientific understanding of self-esteem, social acceptance, impression management, and self-conscious emotion. Across more than four decades, he has asked why people care so deeply about what…

Roy F. Baumeister was born on May 16, 1953, in Cleveland, Ohio, and became one of the most influential social psychologists of the late twentieth and early twenty-first centuries. His work is unusually broad, ranging across the self, identity, self-control,…

Sherry Turkle was born in New York City in 1948 and became one of the most important interpreters of how technology reshapes identity, intimacy, childhood, conversation, and self-understanding. Her work is unusual because it joins sociology, psychology, psychoanalysis, anthropology, and…

Charles Horton Cooley was born on August 17, 1864, in Ann Arbor, Michigan, into a family closely tied to law, education, and public life. His father, Thomas M. Cooley, was a respected judge, legal scholar, and dean of the University…

Margaret Ann Boden was born on November 26, 1936, in London, and became one of the most important figures in cognitive science, artificial intelligence, philosophy of mind, and the study of creativity. Known widely as Maggie Boden, she belonged to…

Joseph Weizenbaum was born on January 8, 1923, in Berlin, Germany, into a Jewish family whose life was transformed by the rise of Nazism. In 1936, when he was still a boy, his family fled Germany and immigrated to the…