Benjamin Bloom was an influential educational psychologist who remains best known for his theory of learning goals (“Bloom’s Taxonomy”). However, Duckworth cites Bloom’s analysis of high achievers (from the book Developing Talent in Young People) as part of her theory of how people develop grit over the course of their lives. She argues that people develop their interests during what Bloom calls “the early years,” build their skills through practice during what Bloom calls “the middle years,” and find a sense of purpose in their work during what Bloom calls “the later years.”