M B T I  

Here is more information on the MBTI,
the Myers-Briggs Type Indicator

 Also see Afictionado's analysis of the MBTI test

What kind of MBTI personality are you?

Your opinion about Snape's personality type


Personality Type or Psychological Type are terms most commonly associated with the model of personality development created by Isabel Briggs Myers, the author of the world's most widely used personality inventory, the MBTI or Myers-Briggs Type Indicator. Myers' and her mother, Katharine Briggs, developed their model and inventory around the ideas and theories of psychologist Carl Jung, a contemporary of Sigmund Freud and a leading exponent of Gestalt personality theory.

Beginning in the early 1940's, Briggs & Myers extended Jung's model with the initial development of the MBTI. Through her extensive research refining the MBTI and collaboration with many colleagues, Jung's concepts were put into language that could be understood and used by the average person. Myers' book "Gifts Differing", published posthumously in 1980, provided a comprehensive introduction into the Jung/Myers theory. Myers book and her philosophy of celebrating human diversity anticipated the workplace diversity movement.

The Basic Model
In her studies of people and extensive reading of Jung's theories, Myers concluded there were four primary ways people differed from one another. She labeled these differences "preferences" - drawing a similarity to "hand preferences" to illustrate that although we all use both of our hands, most of us have a preference for one over the other and "it" takes the lead in many of the activities in which we use our hands.

The first set of mental preferences relates to how people "Perceive" or take in information.

Those who prefer the Sensing Perception favor concrete, tangible, data and details from their direct here-and-now experience.

In contrast, those who prefer the Intuition Preference are drawn to information that is more abstract, conceptual, big-picture, and represents imaginative possibilities for the future.

The second set of mental preferences identifies how people form "Judgments" or make decisions.

Those who prefer Thinking Judgment have an inborn preference for making decisions in an objective, logical, and analytical manner with an emphasis on tasks and results to be accomplished.

Those whose preference is for Feeling Judgment make their decisions in a somewhat global, visceral, harmony and value-oriented way, paying particular attention to the impact of decisions and actions on other people.

One of the practical applications of the MBTI and understanding these preferences is in supporting better Teamwork. Inborn differences in these mental preferences lead to quite different value structures and communication styles, which can hamper mutual understanding and cooperation.

Myers-Briggs Type Indicator and MBTI are registered trademarks of Consulting Psychologists Press, Inc.


Take the test

Answer my new poll: What type are you?


Which of the 16 personalities is Snape?

I really can't decide which one is best.  The e-mail I received said INTJ, but I thought ISTJ was also a good choice.  The 3 other letters are perfect (Introverted, Thinking, Judging), but I hesitate between the Sensing and Intuition. I think my hesitation comes from the fact that we lack certain elements of Snape's life!  That's why I'd rather leave these two there, but please, let me know what you think!  I underlined the differences between the two profiles!  
For those who want to know, I'm definitely an INTJ (first row)

Life as an INTJ
(Introvert, Intuitive, Thinker, Judger)         

People of this type tend to be: autonomous, aloof, and intellectual; imaginative, innovative, and unique; critical, analytical, and logical; intellectually curious, driven to learn and increase their competence and knowledge; socially cautious and reserved; organized and definitive.

The most important thing to INTJs is their independence and being able to live according to their own standards.

Life as an ISTJ
(Introvert, Sensor, Thinker, Judger)   

People of this type tend to be:
cautious, conservative, and quiet; literal, realistic, and practical; careful and precise;
logical, honest, and matter of fact; resistant to change and comfortable with routine; hard working and responsible.


The most important thing to ISTJs is being of service, working hard, and being responsible.

How to Love an INTJ

  • Be an attentive and respectful listener.
  • Appreciate his competency and creativity.
  • Give him plenty of privacy and time alone for him to pursue his interests in depth.
  • Try not to pressure him to share his feelings before he's ready.
  • Be honest and direct about what you need from him.
  • Above all - respect his independence and need to live his life according to his own standards.


How to Love an ISTJ

  • Appreciate his common sense, practical, and steady approach to life.
  • Respect his need for routine and order; avoid sudden changes.
  • Listen attentively and respectfully.
  • Try to be calm, honest and specific when discussing problems.
  • Give him plenty of time to think things through before discussing them.
  • Above all - Notice and acknowledge his hard work and commitment to his family's/school's/community's needs.
This is where a couple of trauma originate from in normal life. So, you can guess what Snape's parents may have done to him that made him even more introverted!

Parenting INTJ

The Joys and Challenges of Raising INTJs:

They are imaginative and intellectually curious but tend to also be stubborn and unwilling to back down. While they are logical, direct, and skeptical, they are usually intensely private, independent, and appear emotionally aloof and superior.

What works with INTJs:

  • don't push them into social situations; respect their hesitancy and follow their lead
  • provide a constantly expanding source of intellectual stimulation
  • expect an analytical thinking style, and don't take their criticism personally

Parents of INTJs: they'll know you really love them when you...
respect their privacy; be sure your praise centers on their competence.

This is where a couple of trauma originate from in normal life. So, you can guess what Snape's parents may have done to him that made him even more introverted!

Parenting ISTJ

The Joys and Challenges of Raising ISTJs:

They are quiet, serious, and careful but typically are reluctant to initiate social interaction. While they are organized, determined, and methodical, they can also be single-minded, super cautious and a bit rigid.

What works with ISTJs:

  • give them plenty of time to adjust to new things and keep routines in place as much as possible
  • be clear and explicit in your directions and requests; say what you mean, and mean what you say
  • don't rush them from one activity to another; respect their slower transition pace

Parents of ISTJs: they'll know you really love them when you...
let them demonstrate their expertise, ask them to research a potential purchase.

Recognising an INTJ

How to Spot INTJs:

  • cool, formal and independent
  • intellectual, logical, and skeptical
  • complex, and challenging with a sometimes superior attitude
  • conservative dressers with an individual look


Tips for Communicating with INTJs:

  • Appeal to their creativity and innovation
  • Base your arguments on logical reasoning
  • Be organized and avoid errors that undermine your competence
Recognising an ISTJ


How to Spot ISTJs:

  • quiet, careful, and private
  • cautious, focused, and hardworking
  • serious, meticulous, and very literal
  • neat, conservative, modest dressers



Tips for Communicating with ISTJs:

  • Be prepared and present ideas sequentially
  • Give them plenty of time to adapt to changes
  • Stress the practical benefits