Why this site exists
I'm Ann Pierce, the creator of this site. I discovered the Kegan stages during a time of personal upheaval, and it had an enormous impact on me.
I wanted to share the ideas with others, but I had a hard time locating a single resource that could act as a gateway — encompassing not just the original theory but the modern state of the field.
Robert Kegan’s model of adult development is not new. The core books are from the 1980s and 1990s. But since then, ideas have scattered across academic papers, books, and blogs.
I wanted one place to explain the five stages plainly, show the single mechanism behind them, and point out how the framework gets abused.
Two additional commitments shape everything here. First, the stages are presented as Robert Kegan originally intended: slow, structural reorganizations of the self that a person moves into and becomes native to. Second, borrowing from David Chapman, the stage numbers are offered as a useful pattern language, so the framework can be used in daily life without diagnosing anyone.
About Robert Kegan
Robert Kegan (b. 1946) is an American developmental psychologist who taught at the Harvard Graduate School of Education for four decades. Building on the constructive-developmental tradition of Jean Piaget, he proposed that the process of development (the renegotiation of what is subject and what is object) continues throughout adult life.
His major books trace the idea’s arc: The Evolving Self (1982) laid out the stage model; In Over Our Heads (1994) argued that modern life routinely demands Stage 4 and 5 minds from a mostly Stage 3 population; and, with longtime collaborator Lisa Laskow Lahey, Immunity to Change (2009) and An Everyone Culture (2016) turned the theory toward practice. With colleagues he also developed the Subject–Object Interview, the structured method researchers have used to assess developmental position.
About David Chapman
My favorite living writer on this material is David Chapman, whose work connects Kegan’s framework to the larger question of how people relate to meaning and systems. He pioneered using the Kegan stages as a pattern language. Three pieces of his I recommend are:
- “Developing ethical, social, and cognitive competence”
- “Misunderstanding stage theory”
- “What is stage five like?”
Independence
This site is not affiliated with, endorsed by, or connected to Robert Kegan, Harvard University, David Chapman, or any other person or organization mentioned here. Errors of summary or emphasis belong to me! If you find one, feel free to reach out at hello@annpierce.com.
I'll be blogging here, although I intend for my extrapolations to stand separate from the core content of the site.