How the Adult Development Stage Models Compare
What each stage map counts, where they have been checked against one another, and where they have not
How do Kegan, Loevinger, Cook-Greuter, Torbert and O’Fallon’s adult development stages line up?
These stage models do not share one scale. The Loevinger lineage of sentence-completion tests counts 8 levels in Loevinger’s original test and 9 in the Cook-Greuter and Torbert family, while O’Fallon’s STAGES counts 12. Kegan’s construct-developmental model is judged by many, Kegan included, to measure a closely related construct, but the authors of the main summary know of no empirical work correlating it with Loevinger’s lineage. The level-by-level crosswalk these sources report, STAGES against Cook-Greuter’s Maturity Assessment Profile (MAP), reports substantial agreement up to level 4.5 in a study whose authors include the model’s developer.
If you have met more than one adult development model, you have probably noticed that the stages do not line up neatly. Loevinger’s sentence-completion tradition, extended by Susanne Cook-Greuter and by William Torbert’s group, and Terri O’Fallon’s STAGES model all describe a path of meaning-making, but they divide it differently and name it differently. Robert Kegan’s subject-object work, a constructive-developmental theory of how adults make meaning, sits nearby and is often placed beside them. This page does not rank these models or say which is correct. It sets out what the main comparative source reports: how many levels each map defines, which correspondences have been measured, which have not, and where the same label is used for different things. Where a correspondence is reported, the page names whose alignment it is.
Pratiques
- Write the model’s name beside every stage you record
Each time you record a stage, write the model and its level count next to it, because the same label can sit at a different place on each scale.
- Pick the map whose resolution matches your question
Choose the model that draws the distinction your question depends on, instead of defaulting to whichever chart you saw first.
- Read a published crosswalk one level at a time
Take one level from one model, find its row in the published table, and read the spread of matches instead of a single agreed rung.
- Ask whether anyone has tested a claimed match
Before you accept that one model’s stage equals another’s, look for a published study that measured the two together.
- Keep one shared stage word from carrying two meanings
When two people use the same stage name, ask which model each one means before you agree or disagree.
- Describe one situation in two maps and mark the gap
Write one real situation, read it through two developmental maps, and note exactly where the two readings disagree.
- Trace a stage chart to the paper behind it
Before you quote a level chart, find the model’s own paper and check where each level name and count comes from.
Comment ces pratiques s'articulent
O’Fallon (2020) defines stages as successive developmental perspectives that each transcend and include the previous one, a definition she notes is similar to Kegan’s subject-object research. Where the sources read here compare the models, they differ mainly in where their boundaries fall, how many levels they count, and what the labels are attached to. The practices on this page all come down to keeping those three things visible, so that a number or a name is never read as if it had travelled unchanged from one map to another.
Is Kegan’s stage model the same thing as Loevinger’s ego development stages?
Murray and O’Fallon (2020) report that many researchers, Kegan included, judge Kegan’s subject-object work and Loevinger’s ego development to measure closely related constructs. They also say they know of no empirical work investigating the correlation between the two. So the accurate answer is that they are judged to be closely related, and whether they correspond level by level has not been shown in the sources read here. Placing them side by side is a reasonable starting point for reflection, but it does not establish that a Kegan order equals a Loevinger stage.
How closely does the STAGES model match Cook-Greuter’s MAP, level by level?
In the replication study that Murray and O’Fallon (2020) summarize, STAGES scores were compared with Cook-Greuter/Loevinger scores on the same sentence-completion inventories. The authors report a weighted kappa (a statistic for agreement beyond chance) of 76%, which they place in the substantial-agreement band. Agreement varies by level: a STAGES 3.5 Achiever score matched the MAP level 65.1% of the time and fell within one level 90.7% of the time, and a STAGES 4.5 Strategist score matched 62.2% of the time and within one level 86.5% of the time. The study used four STAGES scorers, one of whom had learned both methods, and its authors include the model’s developer. The correspondence is therefore the authors’ own result, and no independent replication appears in the sources read here.
Are Torbert’s action logics the same as the STAGES levels or the MAP levels?
The sources read here do not show that they are the same. Starr and Torbert (2005) present seven action logics, adapted from Rooke and Torbert’s 2005 work, with percentages drawn from 4,310 respondents; Expert and Achiever are the two largest groups. Murray and O’Fallon (2020) report nine levels for the MAP family, which includes the Global Leadership Profile and Leadership Development Profile instruments associated with Torbert. The sources read here do not reconcile Starr and Torbert’s seven logics with those nine levels, so the counts differ and this page does not claim a mapping between them. The labels Expert, Achiever and Strategist also appear in STAGES, where they name different things on different instruments. The papers read here give no level-by-level crosswalk between Torbert’s logics and STAGES, so any pairing between them is a reading, not a published correspondence.
Why do the level counts differ between Loevinger, Cook-Greuter and O’Fallon?
Each model divides the same developmental territory differently. Murray and O’Fallon (2020) explain that Cook-Greuter extended Loevinger’s system by differentiating two stages, Construct Aware and Unitive, within Loevinger’s final stage. O’Fallon went further and differentiated four stages (5.0, 5.5, 6.0 and 6.5) in the same late territory, and also split the Conformist level into two. That gives 8 levels in the Loevinger test, 9 in the Cook-Greuter and Torbert family, and 12 in STAGES. The extra levels are not all in the later stages. Because the models define levels above 4.5 differently, Murray and O’Fallon say their data did not allow a robust comparison of those levels.
Can a single chart put all of these stage models on one scale?
Not on the evidence in these sources. Each model has its own level count and boundaries. The level-by-level crosswalk these sources report covers STAGES and Cook-Greuter’s MAP up to level 4.5, and Murray and O’Fallon (2020) say that several neighboring developmental models have not been compared thoroughly with one another. A combined chart is an interpretation with its assumptions stated. The honest version marks which pairs were measured against each other and which were placed by reasoning.
Comment choisir entre elles ?
Start from the question, not the chart. If you want to know how a stage name you have heard relates to a number on another scale, read the published crosswalk one row at a time and treat the spread as the answer. If two people seem to disagree about a stage, name each model first and see whether they are using the same word for the same thing. If someone gives you a neat equivalence, ask whether anyone measured it before you adopt it. If a single situation keeps replaying, describe it in two maps and mark where they split. And if a chart arrived without a source, trace it to its paper before you use any of its numbers.
Ce que ces approches ne tranchent pas
The one published correspondence in these sources, the STAGES–MAP replication, includes the model’s developer among its authors and used four trained STAGES scorers, one of whom had learned both systems, and the sources read here include no independent replication of it. Murray and O’Fallon (2020) say they know of no empirical work correlating Kegan’s construct-developmental model with the Loevinger lineage, and they note that the neo-Piagetian theories (stage theories built on Piaget’s work) of Commons and of Fischer have not been compared thoroughly with it. Torbert’s seven action logics are read here through a 2005 table; the Harvard Business Review article it adapts was not read, and no level-by-level crosswalk between those logics and STAGES was found in the sources read. Above level 4.5 the models define levels differently, so the sources read here do not support placing the highest stages on one scale. Kegan (1994) was not read for this page, and the quoted definition is the one O’Fallon (2020) reports.
Pratiquez cela avec IX Coach
Concepts associés
- Terri O’Fallon’s STAGES Model, Made Practical
Twelve stages built from three repeating questions, and how to work with the one you are in
- Torbert’s Seven Action Logics of Leadership
Seven ways leaders make sense of pressure, how common each is, and how to work with your own
- Ego Development Theory: What It Is and How It Is Measured
The frame you make meaning through, how researchers measure it, and how to work with it without ranking anyone
- La théorie sujet-objet de Kegan, en pratique
Passer d'être mené par ses présupposés à pouvoir les examiner
- The Self-Transforming Mind: Kegan’s Fifth Order, Made Practical
When your own way of seeing becomes something you can look at, question, and let be changed
- Kegan’s Socialized Mind: What It Gives You and How to Grow Beyond It
When what others think is part of who you are — honoring the stage, and loosening its grip
- The Construct-Aware and Unitive Stages of Adult Development
Seeing the self and its stories as constructions — what it looks like, how rare it is, and what it does not promise
- First, Second, Third and Fourth Person Perspectives
How the number of viewpoints you can hold grows, what the research does and does not show, and how to practice it in a real disagreement