William G. Perry

William G. Perry was an educational psychologist known for his work on college student development. He created a model describing how students' thinking evolves from a black-and-white view of knowledge to a more complex, relativistic understanding. Perry's stages show how learners progress from seeing knowledge as absolute to recognizing multiple perspectives and uncertainties. His insights help educators support students in becoming more critical thinkers and adaptable learners, especially during transitional college years.