b. 1942
Allan Gibbard is an American philosopher and Professor Emeritus at the University of Michigan, best known for his work in metaethics and moral philosophy. He developed expressivism about normative discourse, arguing that normative judgments express mental states rather than describe facts. His influential works include 'Wise Choices, Apt Feelings' and 'Thinking How to Live'.
Developed norm-expressivism, a sophisticated form of expressivism about normative language
Introduced the concept of 'rationality' as the property of actions permitted by norms it is rational to accept
Authored 'Wise Choices, Apt Feelings' (1990), a landmark work in metaethics
Contributed to social choice theory and the theory of moral emotions
Developed a expressivist account linking wrongness to fitting reactive attitudes like resentment