Final answer:
Donald E. Super is the theorist who linked identity with career choices, emphasizing the interconnection between self-concept and career development over a person's lifespan.
Step-by-step explanation:
The theorist who first linked identity with career choices is Donald E. Super. Super's career development theory is centered on the concept of self-concept and its role in career development. He suggested that personal growth, self-understanding, and the development of a career are intertwined over the life span. Super’s work emphasizes how career preferences and competencies, along with life situations, combine to influence career development. While Erik Erikson focused primarily on psychosocial stages of development and did not explicitly link identity to career choice, Super developed models that are specifically designed to illustrate career development.