Which psychologist developed a model of adult socialization that includes stages of early adult, midlife, and later adult transitions?

Daniel Levinson, a psychologist who graduated from Yale was the one that developed a model of adult socialization, which includes stages of early adult, midlife, and later adult transitions. According to Levinson’s model:

Early adult transition spans age 17 - 22

Middle adult transition spans age 40 - 45

Late adult transition spans age 60 - 65