Discover how your MBTI type influences your journey through Erikson's psychosocial stages and Kegan's orders of consciousness, shaping your personal growth.
This article reveals how your MBTI type profoundly shapes your personal growth journey by influencing the development of your cognitive functions across your lifespan and how you navigate Erikson's psychosocial stages and Kegan's orders of consciousness. It details the emergence of dominant, auxiliary, tertiary, and inferior functions at different ages, highlighting type-specific challenges and offering a practical 3-day challenge for self-discovery.
When Dario Nardi hooked 60 UCLA students up to EEG caps in 2011, he expected to find brain patterns that matched the 16 types neatly. What he found was messier — and far more interesting.
By age 7, your dominant cognitive function has typically taken shape. This foundational aspect of your personality dictates how you perceive and engage with the world. Take an ESTJ child, for example. They thrive in structured environments, often gravitating toward routines and clear expectations. This inclination usually evolves into leadership roles in adulthood, where their sense of responsibility shines.
Around the age of 20, your auxiliary function kicks in, acting as a counterbalance to your dominant one. For an INTP, this might mean confronting the challenge of developing Fe, which can be a rocky road. I remember mentoring an INTP student who initially found group work daunting. But when he leaned into collaborative projects, his interpersonal skills blossomed. That transformation illustrates how embracing your auxiliary function can lead to significant personal growth.
The 30s and 40s often herald the emergence of your tertiary function, which can feel like discovering hidden aspects of your personality. Picture an ISFJ experiencing a creative surge as they tap into their Ne. This newfound expressiveness can lead to exciting hobbies or even career shifts. It's exhilarating and daunting. Many people embark on a journey to integrate these neglected facets of their identity, which can be both challenging and transformative.
Midlife often brings an unavoidable confrontation with your inferior function — the part of you that remains underdeveloped. For an ESFJ, this might mean grappling with introverted thinking (Ti). They may find themselves at a crossroads, torn between maintaining social harmony and seeking personal authenticity. I observed this in a colleague who, after years of prioritizing others' needs, started a blog to share her inner thoughts and aspirations. Watching her transformation was truly inspiring.
Robert Kegan's Constructive Developmental Theory provides a compelling lens through which to examine personal growth. While Kegan's model is academically rich, I often find it less applicable in everyday life compared to the function stack. Here's the crux: Kegan suggests individuals progress through stages of meaning-making. An ENFP might find themselves fluctuating between Kegan's third and fourth orders, shifting from a strong focus on interpersonal relationships to embracing a more self-directed perspective. That transition can feel liberating yet disorienting.
Erik Erikson's psychosocial stages have a profound impact on our life outcomes. For example, a pivotal study by Vaillant in 1977 tracked Harvard graduates and revealed that successfully navigating these stages correlates with healthier relationships and career satisfaction. Consider an ISFJ who adeptly moves through the intimacy versus isolation stage. They learn to balance nurturing with personal fulfillment, often leading to rewarding careers in fields like social work.
The interaction between MBTI types and Erikson's stages presents unique challenges. For instance, an INTJ may thrive in their career during the generativity versus stagnation stage but struggle significantly with intimacy. This often leads to a career-focused life, leaving personal relationships in the dust. I've seen this in my students; many INTJs need to consciously work on their emotional availability, a task that can be both necessary and daunting.
Senior Editor at MBTI Type Guide. Elena writes the pieces that dig into where MBTI comes from — Jungian cognitive function theory, the historical context, the things modern type descriptions tend to flatten. Thoughtful, careful, and comfortable holding contradictions.
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Here’s the challenge: Over the next three days, focus on your cognitive functions. Day 1: Identify your dominant function by jotting down three examples of how you use it daily. Day 2: Intentionally engage your auxiliary function for at least 15 minutes — for an INTP, this could mean starting a conversation about feelings. Day 3: Pinpoint a trigger for your inferior function and observe how you react. This hands-on approach can lead to meaningful self-discovery.