Michel Foucault was a French philosopher and historian whose groundbreaking work on power, knowledge, and social institutions profoundly influenced modern thought.
Jean Piaget was a Swiss developmental psychologist whose groundbreaking work on child cognitive development has significantly influenced educational theories and practices.
Lev Vygotsky was a Russian psychologist and educational theorist who significantly influenced cognitive development theory and educational psychology.
B.F. Skinner was an American psychologist and leading proponent of behaviorism, whose groundbreaking work in operant conditioning revolutionized the field of psychology.