MBTI Subtypes & Cognitive Function Development


In my view, everyone has four dominant cognitive functions, associated with and important for flow and balance within self. When we have developed an imbalance in the preference between these cognitive functions, we normally fall into one of these subtypes. 

The most common thing is we begin to overvalue our observer function over our decider function, and our worldview starts to collide with our values or ethics. Or perhaps we start to overvalue our actor function over our reviewer function, and we start acting out and behaving in ways that are contrary to our deeper values and awareness. 

We have people with observer preferences, reviewer preferences, actor preferences, or decider preferences. These may all switch from situation to situation.

Subtypes, Personality Type Subtypes, MBTI Subtypes, Cognitive Function Development

The Observer

Introverted iNtuition, Extroverted iNtuition, Introverted Sensing and Extroverted Sensing

Priority: Acquiring information
Weakness: Decision making

Observers love to learn and think and are always preoccupied with information. They are usually know-it-all’s who absorb knowledge like sponges. They like to take the position of the expert on some topic and pride themselves on using their knowledge rationally. They may more negatively avoid making decisions and take too long time to make up their mind about something. Others may feel they have to pressure the observer to set goals and to reach a deadline. 

The Decider

Feeling Judging, Thinking Perceiving, Thinking Judging and Feeling Perceiving here dominates as the flow function. 

Strength: Decision making
Weakness: Perception

The Decider is typically hard-working, pragmatic, and decisive. They have a strong will and are usually very influential types. They need to be productive and to make something out of their days. They can more negatively pretend to ignore important truths and may pretend not to see or notice certain things, or they may make up their mind too quickly and avoid studying something clearly. 

The Reviewer

Introverted Feeling, Extroverted Feeling, Extroverted Feeling and Extroverted Thinking

Strength: Judgement
Weakness: Passive

The Reviewer values responsibility and good ethics and conduct. They want to behave right and to stay true to their values. The fear is to do something wrong or to say something you should not. The reviewer may not do anything or may at times be quite inactive. They prefer to observe and to study and are typically more engaged with their feelings and values. They may think about who they are, and may wonder “what to do” or “what is right or wrong”. 

The Actor

iNtuitive Judging, Sensing Judging, Sensing Perceiving, iNtuitive Perceiving. 

Strength: Active
Weakness: Makes many mistakes

Actors are always busy and tend to always have something going on. They are full of energy and love to keep a full schedule. They try their best to honor commitment, but may sometimes take on more than they can handle. They are often late for appointments and struggle to deliver what they set out to, but overall, they are quite productive. 

INFJ-Observer vs INFJ Decider

Introverted iNtuition acts here as the flow observer in an INFJ, or in the ESFJ subtype, Feeling Judging acts first as a flow decider.  In the INtp subtype we see an INFJ who has a really strong theoretical pursuit or is predominantly academic or abstractly inclined. They live in a world of their own generally away from practical decision making matters and work related goals and responsibilities. 

In the esFJ subtype, we see an INFJ who lives predominantly in real-time social concerns and diplomatic missions. They are completely focused on connection and communication with the collective at the expense of neglecting their personal needs and boundaries. They may act or speak recklessly without taking the needed time to reflect and gain awareness into the situation. They may avoid or hide from important truths or pretend not to realise their introverted intuition is trying to tell them something. 

Visit your personality type article using the menu above to learn about your personality type’s unique subtype.