MBTI

The C.S. Joseph 8-function model. Cognitive functions, roles and how to apply them.

General Discussion
This model is based off of the work of John Beebe and Linda Berens and Chase S. Joseph. Keep in mind this is years of research and notes condensed down into a easy-to-understand summary so I'll do my best not to misrepresent any information but such things are likely.

The Types
Type Letters | Type Name | Type Functions

| - | - ESTJ | Overseer | Te Si Ne Fi Ti Se Ni Fe ESFJ | Supporter | Fe Si Ne Ti Fi Se Ni Fi ISTJ | Scholar | Si Te Fi Ne Se Ti Fe Ni ISFJ | Defender | Si Fe Ti Ne Se Fi Ti Ne ESTP | Persuader | Se Ti Fe Ni Si Te Fi Ne ESFP | Entertainer | Se Fi Te Ni Si Fe Ti Ne ISTP | Craftsman | Ti Se Ni Fe Te Si Ne Fi ISFP | Artist | Fi Se Ni Te Fe Si Ne Ti ENTJ | Chief | Te Ni Se Fi Ti Ne Si Fe ENTP | Visionary | Ne Ti Fe Si Ni Te Fi Se INTJ | Strategist | Ni Te Fi Se Ne Ti Fe Si INTP | Engineer | Ti Ne Si Fe Te Ni Se Fi ENFJ | Mentor | Fe Ni Se Ti Fi Ne Si Te ENFP | Advocate | Ne Fi Te Si Ni Fe Ti Se INFJ | Sage | Ni Fe Ti Se Ne Fi Te Si INFP | Dreamer | Fi Ne Si Te Fe Ni Se Ti

The Functions
Function Letters | Function Name | Function Definition | Function Simplification

| - | - | - Fe | Extraverted Thinking | Ethics | What others feel Fi | Introverted Feeling | Morality | What I feel Te | Extraverted Thinking | Rationale | What others think Ti | Introverted Thinking | Logic | What I think Ne | Extraverted Intuition | Metaphysics | What others want Ni | Introverted Intuition | Willpower | What I want Se | Extraverted Sensing | Physics | What others experience Si | Introverted Sensing | Duty/Past Memory | What I experience

The Roles
Role Name | Role Style | Role Simplification

| - | - The Hero | Apex | Is heroic with this function The Parent | Responsible | Is responsible with this function The Child | Innocent | Is childish with this function The Inferior/Aspirational | Fear/Insecurity | Is fearful of this function The Nemesis | Worry | Is worrisome with this function The Critic | Criticism/Wisdom | Is critical with this function The Trickster | Unaware | Is unaware with this function The Demon | Corruption | Is demonic with this function

The Temperaments
Temperament Letters | Temperament Name | Temperament Definition

| - | - SJ Temperament | Traditionalists/Duty-Based Protectors | Safety, Past-Focused, “Should Do”, Story Telling, Long-Term Memory Experience SP Temperament | Artistans/Freedom-Based Creators | Test the Rules, Test Traditions, Live in the Moment, Mechanical Aptitude NT Temperament | Intellectuals/Future-Thinkers | Future Thinkers, Systems & Probabilities, Live in a World of “What If” NF Temperament | Idealists/People-Focused | Philosophical, Endless Social Possibilities, Future Focused, Searching for the Ideal

The Interaction Styles
Interaction Style | Interaction Style Descriptors | Interaction Style Types

| - | - Structure | Direct, Initiating, Control | ESTJ, ESTP, ENTJ, ENFJ Starter | Informative, Initiating, Movement | ESFJ, ESFP, ENTP, ENFP See it Through | Direct, Responding, Movement | ISTJ, ISTP, INTJ, INFJ Background | Informative, Responding, Control | ISFJ, ISFP, INTP, INFP

The Four Sides of The Mind
Side Name | Side Function Order | Side Gateway Function | Side Usage

| - | - | - Ego | Hero - Parent - Child - Inferior/Aspirational | Hero | Conscious usage Subconscious | Inferior/Aspirational - Child - Parent - Hero | Inferior/Aspirational | Productive, positive usage Unconscious | Nemesis - Critic - Trickster - Demon | Nemesis | Stressed, uncomfortable usage Superego | Demon - Trickster - Critic - Nemesis | Demon | Sinful, parasitic usage

How to Apply
Replace bold sections with correct sections from the above tables to apply to your type. This is an extreme simplification of this model but is very convenient and easy to remember. Apply the longer definitions to get the deeper meanings of each statement.

Ego is ENTP.

Hero is Ne. I am heroic with what others want.

Parent is Ti. I am responsible with what I think

Child is Fe. I am childish with what others feel.

Inferior/Aspirational is Si. I am fearful with what I experience.

Nemesis is Ni. I worry with what I want.

Critic is Te. I am critical with what others think.

Trickster is Fi. I am unaware with what I feel.

Demon is Se. I am demonic with what others experience.

Subconscious is ISFJ. Activated with Si. Wants to become a Defender that is productive and positive.

Unconscious is INTJ. Activated with Ni. Can become a Strategist that is stressed and uncomfortable.

Superego is ESFP. Activated with Se. Corrupts into a Entertainer that is sinful and parasitic.

Note. The four sides of the mind is often why people are mistyped. Type tests only tell you what your ego is, so for example if you are in the unconscious state of mind, then you will get the unconscious type in the test rather than your true ego.


ENFJ



Letters / Cognitive Functions / Name



Ego: ENFJ / Fe Ni Se Ti / Mentor



Subconscious: ISTP / Ti Se Ni Fe / Craftsman



Unconscious: INFP / Fi Ne Si Te / Dreamer



Super Ego: ESTJ / Te Si Ne Fi / Overseer







Ego



Hero: Fe I’m Heroic with What others feel



Parent: Ni I’m Responsible with What I want



Child: Se I’m Childish with What others experience



Inferior: Ti I’m Fearful with What I think







Unconscious



Nemesis: Fi I’m Worried with What I feel



Critic: Ne I’m Critical with What others want



Trickster: Si I’m Unaware with What I experience



Demon: Te I’m Demonic with What others think







ENTJ



Letters / Cognitive Functions / Name



Ego: ENTJ / Te Ni Se Fi / Chief



Subconscious: ISFP / Fi Se Ni Te / Artist



Unconscious: INTP / Ti Ne Si Fe / Engineer



Super Ego: ESFJ / Fe Si Ne Ti / Supporter







Ego



Hero: Te I’m Heroic with What others think



Parent: Ni I’m Responsible with What I want



Child: Se I’m Childish with What others experience



Inferior: Fi I’m Fearful with What I feel







Unconscious



Nemesis: Ti I’m Worried with What I think



Critic: Ne I’m Critical with What others want



Trickster: Si I’m Unaware with What I experience



Demon: Fe I’m Demonic with What others feel







ENTP



Letters / Cognitive Functions / Name



Ego: ENTP / Ne Ti Fe Si / Visionary



Subconscious: ISFJ / Si Fe Ti Ne / Defender



Unconscious: INTJ / Ni Te Fi Se / Strategist



Super Ego: ESFP / Se Fi Te Ni / Entertainer







Ego



Hero: Ne I’m Heroic with What others want



Parent: Ti I’m Responsible with What I think



Child: Fe I’m Childish with What others feel



Inferior: Si I’m Fearful with What I experience







Unconscious



Nemesis: Ni I’m Worried with What I want



Critic: Te I’m Critical with What others think



Trickster: Fi I’m Unaware with What I feel



Demon: Se I’m Demonic with What others experience







ENFP



Letters / Cognitive Functions / Name



Ego: ENFP / Ne Fi Te Si / Advocate



Subconscious: ISTJ / Si Te Fi Ne / Examiner



Unconscious: INFJ / Ni Fe Ti Se / Sage



Super Ego: ESTP / Se Ti Fe Ni / Persuader







Ego



Hero: Ne I’m Heroic with What others want



Parent: Fi I’m Responsible with What I feel



Child: Te I’m Childish with What others think



Inferior: Si I’m Fearful with What I experience







Unconscious



Nemesis: Ni I’m Worried with What I want



Critic: Fe I’m Critical with What others feel



Trickster: Ti I’m Unaware with What I think



Demon: Se I’m Demonic with What others experience







ESFJ



Letters / Cognitive Functions / Name



Ego: ESFJ / Fe Si Ne Ti / Supporter



Subconscious: INTP / Ti Ne Si Fe / Engineer



Unconscious: ISFP / Fi Se Ni Te / Artist



Super Ego: ENTJ / Te Ni Se Fi / Chief







Ego



Hero: Fe I’m Heroic with What others feel



Parent: Si I’m Responsible with What I experience



Child: Ne I’m Childish with What others want



Inferior: Ti I’m Fearful with What I think







Unconscious



Nemesis: Fi I’m Worried with What I feel



Critic: Se I’m Critical with What others experience



Trickster: Ni I’m Unaware with What I want



Demon: Te I’m Demonic with What others think







ESFP



Letters / Cognitive Functions / Name



Ego: ESFP / Se Fi Te Ni / Entertainer



Subconscious: INTJ / Ni Te Fi Se / Strategist



Unconscious: ISFJ / Si Fe Ti Ne / Defender



Super Ego: ENTP / Ne Ti Fe Si / Visionary







Ego



Hero: Se I’m Heroic with What others experience



Parent: Fi I’m Responsible with What I feel



Child: Te I’m Childish with What others think



Inferior: Ni I’m Fearful with What I want







Unconscious



Nemesis: Si I’m Worried with What I experience



Critic: Fe I’m Critical with What others feel



Trickster: Ti I’m Unaware with What I think



Demon: Ne I’m Demonic with What others want







ESTJ



Letters / Cognitive Functions / Name



Ego: ESTJ / Te Si Ne Fi / Overseer



Subconscious: INFP / Fi Ne Si Te / Dreamer



Unconscious: ISTP / Ti Se Ni Fe / Craftsman



Super Ego: ENFJ / Fe Ni Se Ti / Mentor







Ego



Hero: Te I’m Heroic with What others think



Parent: Si I’m Responsible with What I experience



Child: Ne I’m Childish with What others want



Inferior: Fi I’m Fearful with What I feel







Unconscious



Nemesis: Ti I’m Worried with What I think



Critic: Se I’m Critical with What others experience



Trickster: Ni I’m Unaware with What I want



Demon: Fe I’m Demonic with What others feel







ESTP



Letters / Cognitive Functions / Name



Ego: ESTP / Se Ti Fe Ni / Persuader



Subconscious: INFJ / Ni Fe Ti Se / Sage



Unconscious: ISTJ / Si Te Fi Ne / Examiner



Super Ego: ENFP / Ne Fi Te Si / Advocate







Ego



Hero: Se I’m Heroic with What others experience



Parent: Ti I’m Responsible with What I think



Child: Fe I’m Childish with What others feel



Inferior: Ni I’m Fearful with What I want







Unconscious



Nemesis: Si I’m Worried with What I experience



Critic: Te I’m Critical with What others experience



Trickster: Fi I’m Unaware with What I feel



Demon: Ne I’m Demonic with What others want







INFJ



Letters / Cognitive Functions / Name



Ego: INFJ / Ni Fe Ti Se / Sage



Subconscious: ESTP / Se Ti Fe Ni / Persuader



Unconscious: ENFP / Ne Fi Te Si / Advocate



Super Ego: ISTJ / Si Te Fi Ne / Examiner







Ego



Hero: Ni I’m Heroic with What I want



Parent: Fe I’m Responsible with What others feel



Child: Ti I’m Childish with What I think



Inferior: Se I’m Fearful with What others experience







Unconscious



Nemesis: Ne I’m Worried with What others want



Critic: Fi I’m Critical with What I feel



Trickster: Te I’m Unaware with What others think



Demon: Si I’m Demonic with What I experience







INFP



Letters Cognitive Functions Name



Ego: INFP Fi Ne Si Te Dreamer



Subconscious: ESTJ Te Si Ne Fi Overseer



Unconscious: ENFJ Fe Ni Se Ti Mentor



Super Ego: ISTP Ti Se Ni Fe Craftsman







Ego



Hero: Fi I’m Heroic with What I feel



Parent: Ne I’m Responsible with What others want



Child: Si I’m Childish with What I experience



Inferior: Te I’m Fearful with What others think







Unconscious



Nemesis: Fe I’m Worried with What others feel



Critic: Ni I’m Critical with What I want



Trickster: Se I’m Unaware with What others experience



Demon: Ti I’m Demonic with What I think







INTJ



Letters / Cognitive Functions / Name



Ego: INTJ / Ni Te Fi Se / Strategist



Subconscious: ESFP / Se Fi Te Ni / Entertainer



Unconscious: ENTP / Ne Ti Fe Si / Visionary



Super Ego: ISFJ / Si Fe Ti Ne / Defender







Ego



Hero: Ni I’m Heroic with What I want



Parent: Te I’m Responsible with What others think



Child: Fi I’m Childish with What I feel



Inferior: Se I’m Fearful with What others experience







Unconscious



Nemesis: Ne I’m Worried with What others want



Critic: Ti I’m Critical with What I think



Trickster: Fe I’m Unaware with What others feel



Demon: Si I’m Demonic with What I experience







INTP



Letters / Cognitive Functions / Name



Ego: INTP / Ti Ne Si Fe / Engineer



Subconscious: ESFJ / Fe Si Ne Ti / Supporter



Unconscious: ENTJ / Te Ni Se Fi / Chief



Super Ego: ISFP / Fi Se Ni Te / Artist







Ego



Hero: Ti I’m Heroic with What I think



Parent: Ne I’m Responsible with What others want



Child: Si I’m Childish with What I experience



Inferior: Fe I’m Fearful with What others feel







Unconscious



Nemesis: Te I’m Worried with What others think



Critic: Ni I’m Critical with What I want



Trickster: Se I’m Unaware with What others experience



Demon: Fi I’m Demonic with What I feel







ISFJ



Letters / Cognitive Functions / Name



Ego: ISFJ / Si Fe Ti Ne / Defender



Subconscious: ENTP / Ne Ti Fe Si / Visionary



Unconscious: ESFP / Se Fi Te Ni / Entertainer



Super Ego: INTJ / Ni Te Fi Se / Strategist







Ego



Hero: Si I’m Heroic with What I experience



Parent: Fe I’m Responsible with What others feel



Child: Ti I’m Childish with What I think



Inferior: Ne I’m Fearful with What others want







Unconscious



Nemesis: Se I’m Worried with What others experience



Critic: Fi I’m Critical with What I feel



Trickster: Te I’m Unaware with What others think



Demon: Ni I’m Demonic with What I want







ISFP



Letters / Cognitive Functions / Name



Ego: ISFP / Fi Se Ni Te / Artist



Subconscious: ENTJ / Te Ni Se Fi / Chief



Unconscious: ESFJ / Fe Si Ne Ti / Supporter



Super Ego: INTP / Ti Ne Si Fe / Engineer







Ego



Hero: Fi I’m Heroic with What I feel



Parent: Se I’m Responsible with What others experience



Child: Ni I’m Childish with What I want



Inferior: Te I’m Fearful with What others think







Unconscious



Nemesis: Fe I’m Worried with What others feel



Critic: Si I’m Critical with What I experience



Trickster: Ne I’m Unaware with What others want



Demon: Ti I’m Demonic with What I think







ISTJ



Letters / Cognitive Functions / Name



Ego: ISTJ / Si Te Fi Ne / Examiner



Subconscious: ENFP / Ne Fi Te Si / Advocate



Unconscious: ESTP / Se Ti Fe Ni / Persuader



Super Ego: INFJ / Ni Fe Ti Se / Sage







Ego



Hero: Si I’m Heroic with What I experience



Parent: Te I’m Responsible with What others think



Child: Fi I’m Childish with What I feel



Inferior: Ne I’m Fearful with What others want







Unconscious



Nemesis: Se I’m Worried with What others experience



Critic: Ti I’m Critical with What I think



Trickster: Fe I’m Unaware with What others feel



Demon: Ni I’m Demonic with What I want







ISTP



Letters / Cognitive Functions / Name



Ego: ISTP / Ti Se Ni Fe / Craftsman



Subconscious: ENFJ / Fe Ni Se Ti / Mentor



Unconscious: ESTJ / Te Si Ne Fi / Overseer



Super Ego: INFP / Fi Ne Si Te / Dreamer







Ego



Hero: Ti I’m Heroic with What I think



Parent: Se I’m Responsible with What others experience



Child: Ni I’m Childish with What I want



Inferior: Fe I’m Fearful with What others feel







Unconscious



Nemesis: Te I’m Worried with What others think



Critic: Si I’m Critical with What I experience



Trickster: Ne I’m Unaware with What others want



Demon: Fi I’m Demonic with What I feel