In some forms of psychological testing, particularly those related to the Myers-Briggs Type Indicator, the cognitive functions (sometimes known as mental functions) are defined as different ways of perceiving and judging the world. They are defined as "thinking", "feeling", "sensing" and "intuition".
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The model in which these four cognitive functions combine in different ways to form different people's personalities was initially conceived by Carl Jung in his pioneering work Psychological Types (1921, ISBN 0-691-09770-4). Jung also posited that the functions formed a hierarchy within a person's personality—the most important function is referred to as the "dominant", with the remaining three filling the roles as "auxiliary," "tertiary," and "inferior" functions. In addition, each mental function is seen as either introverted or extroverted (known as attitudes). This idea is interpreted in terms of whether the person finds it more rewarding when using the function in question to have an outward focus on people and things (extroversion) or an inward focus on thoughts and ideas (introversion). These models do not claim that people are only capable of applying the function in question in that attitude, but rather that operating in the opposite attitude requires the expenditure of "energy" (or rather, emotional resources, enthusiasm, and so on) whilst operating in the person's natural attitude replenishes that same energy.
Myers' Dichotomies | |
Extraversion | Introversion |
Sensing | iNtuition |
Thinking | Feeling |
Judging | Perceiving |
Bold letters are used as shorthand labels |
Isabel Myers, an early pioneer of psychometric testing whose ideas remain controversial within psychology, formalised these ideas and proposed that the mixture of types in an individual's personality could be measured through responses to a personality test she devised along with her mother, Katharine Cook Briggs, the Myers-Briggs Type Indicator. In this model, four "dichotomies" are defined, each labelled by two letters (one for each of the opposites in question), as shown by the emboldened letters in the table. Individuals' personalities fall into sixteen different categories depending on which side of each dichotomy they belong to, labelled by the four applicable letters (for example, an "ESFP" type is someone whose preferences are extraversion, sensing, feeling and perceiving).
Myers interpreted Jung as saying that the auxiliary, tertiary, and inferior functions are always in the opposite attitude of the dominant. In support of Myers' (and/or Briggs') interpretation, in one sentence Jung seems to state that the "three inferior" functions of an (extreme) extravert are introverted. The "most differentiated function is always employed in an extraverted way, whereas the inferior functions are introverted" (Jung, [1921] 1971:par. 575).
Many, however, have found Jung's writing to be ambiguous, and those who study and follow Jung's theories (Jungians) are typically adamant that Myers is incorrect. Jungians interpret Jung as explicitly stating that the tertiary function is actually in the same attitude as the dominant, providing balance. More recently, typologists such as John Beebe and Linda Berens have introduced theoretical systems in which all people possess eight functions—equivalent to the four functions as defined by Jung and Myers but in each of the two possible attitudes—with the four in the opposite attitude to that measured known as the "shadow functions", residing largely in the unconscious.
There is controversy even within the Center for Applications of Psychological Type (CAPT), co-founded by Myers, regarding the attitude of the tertiary relative to the dominant. "The MBTI Qualifying Program", a binder given out during official training, puts the tertiary in the opposite attitude to the dominant on page 13; however, "The Manual", which gives official instructions on how to use the test, has the tertiary in the same attitude on page 31. Charles Martin, ex-vice president of research at CAPT, writes the following on page 22 of the binder, "In what attitude is the tertiary? Isabel Myers read Jung to say that the auxiliary, tertiary, and inferior are all in the same attitude and opposite the dominant. Others (Harold Grant) read: tertiary is in the same attitude as the dominant."
The tables below give different theorists' ideas about personality types in terms of "cognitive functions".
Carl Jung developed the theory of cognitive processes in his work "Psychological Types". He used the terms dominant, auxiliary, and inferior.
Extraverted Rational
|
Extraverted Irrational
|
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Dominant |
Extraverted Thinking
|
Extraverted Feeling
|
Extraverted Sensation
|
Extraverted Intuition
|
Auxiliary |
?
|
?
|
?
|
?
|
Inferior |
?
|
?
|
?
|
?
|
Introverted Rational
|
Introverted Irrational
|
|||
Dominant |
Introverted Thinking
|
Introverted Feeling
|
Introverted Sensation
|
Introverted Intuition
|
Auxiliary |
?
|
?
|
?
|
?
|
Inferior |
?
|
?
|
?
|
?
|
There is a difference between Jung and the MBTI regarding the designation of "inferior" function. While the MBTI clearly designates only the fourth function as the inferior, Jung uses a more flexible definition. "As a consequence of this one-sided development, one or more functions are necessarily retarded. These functions may properly be called inferior ..." (Jung, [1921] 1971:Def. Inferior Function, par. 763).
Isabel Myers created the original type table. In her table, diametrically opposite personality types (that is, those with no traits in common among the dichotomies) are separated by one block along diagonals.
Type |
ISITEJ
|
ISIFEJ
|
INIFEJ
|
INITEJ
|
Dominant or first | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
Auxiliary or second | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
Tertiary or third | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
Inferior or fourth | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
Type |
ISETIP
|
ISEFIP
|
INEFIP
|
INETIP
|
Dominant or first | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
Auxiliary or second | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
Tertiary or third | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
Inferior or fourth | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
Type |
ESETIP
|
ESEFIP
|
ENEFIP
|
ENETIP
|
Dominant or first | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
Auxiliary or second | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
Tertiary or third | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
Inferior or fourth | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
Type |
ESITEJ
|
ESIFEJ
|
ENIFEJ
|
ENITEJ
|
Dominant or first | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
Auxiliary or second | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
Tertiary or third | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
Inferior or fourth | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
Though John Beebe has not published a type table, the format that Isabel Myers devised can also be applied to his theory. Beebe describes the different cognitive functions' role in the overall personality in terms of various mythic archetypes. Just as in Myers's table, personality types whose primary four functions are completely opposite are separated by one block along diagonals. The same does not apply to the four "shadow" functions, however.
Type |
ISITEJ
|
ISIFEJ
|
INIFEJ
|
INITEJ
|
1st - Hero/Heroine | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
2nd - Good Parent | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
3rd - Puer/Puella | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
4th - Anima/Animus | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
5th - Opposing Personality | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
6th - Senex/Witch | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
7th - Trickster | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
8th - Daemon | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
Type |
ISETIP
|
ISEFIP
|
INEFIP
|
INETIP
|
1st - Hero/Heroine | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
2nd - Good Parent | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
3rd - Puer/Puella | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
4th - Anima/Animus | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
5th - Opposing Personality | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
6th - Senex/Witch | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
7th - Trickster | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
8th - Daemon | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
Type |
ESETIP
|
ESEFIP
|
ENEFIP
|
ENETIP
|
1st - Hero/Heroine | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
2nd - Good Parent | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
3rd - Puer/Puella | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
4th - Anima/Animus | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
5th - Opposing Personality | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
6th - Senex/Witch | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
7th - Trickster | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
8th - Daemon | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
Type |
ESITEJ
|
ESIFEJ
|
ENIFEJ
|
ENITEJ
|
1st - Hero/Heroine | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
2nd - Good Parent | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
3rd - Puer/Puella | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
4th - Anima/Animus | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
5th - Opposing Personality | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
6th - Senex/Witch | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
7th - Trickster | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
8th - Daemon | Extraverted Feelings | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
The layout of Linda Berens's type table is unique and her terminology differs from that of Beebe; however, the ordering of cognitive processes in her and Beebe's models are the same.
Engineer
|
Coordinator
|
|||
Type |
ENETIP
|
INETIP
|
ENITEJ
|
INITEJ
|
1st - Leading/Dominant | Extraverted Intuition | Introverted Thinking | Extraverted Thinking | Introverted Intuition |
2nd - Supporting/Overprotective | Introverted Thinking | Extraverted Intuition | Introverted Intuition | Extraverted Thinking |
3rd - Relief/Unsettling | Extraverted Feeling | Introverted Sensing | Extraverted Sensing | Introverted Feeling |
4th - Aspirational/Projective | Introverted Sensing | Extraverted Feeling | Introverted Feeling | Extraverted Sensing |
5th - Opposing/Backup | Introverted Intuition | Extraverted Thinking | Introverted Thinking | Extraverted Intuition |
6th - Critical/Discovery | Extraverted Thinking | Introverted Intuition | Extraverted Intuition | Introverted Thinking |
7th - Deceiving/Comedic | Introverted Feeling | Extraverted Sensing | Introverted Sensing | Extraverted Feeling |
8th - Devilish/Transformative | Extraverted Sensing | Introverted Feeling | Extraverted Feeling | Introverted Sensing |
Mediator
|
Guide
|
|||
Type |
ENEFIP
|
INEFIP
|
ENIFEJ
|
INIFEJ
|
1st - Leading/Dominant | Extraverted Intuition | Introverted Feeling | Extraverted Feeling | Introverted Intuition |
2nd - Supporting/Overprotective | Introverted Feeling | Extraverted Intuition | Introverted Intuition | Extraverted Feeling |
3rd - Relief/Unsettling | Extraverted Thinking | Introverted Sensing | Extraverted Sensing | Introverted Thinking |
4th - Aspirational/Projective | Introverted Sensing | Extraverted Thinking | Introverted Thinking | Extraverted Sensing |
5th - Opposing/Backup | Introverted Intuition | Extraverted Feeling | Introverted Feeling | Extraverted Intuition |
6th - Critical/Discovery | Extraverted Feeling | Introverted Intuition | Extraverted Intuition | Introverted Feeling |
7th - Deceiving/Comedic | Introverted Thinking | Extraverted Sensing | Introverted Sensing | Extraverted Thinking |
8th - Devilish/Transformative | Extraverted Sensing | Introverted Thinking | Extraverted Thinking | Introverted Sensing |
Expediator
|
Monitor
|
|||
Type |
ESETIP
|
ISETIP
|
ESITEJ
|
ISITEJ
|
1st - Leading/Dominant | Extraverted Sensing | Introverted Thinking | Extraverted Thinking | Introverted Sensing |
2nd - Supporting/Overprotective | Introverted Thinking | Extraverted Sensing | Introverted Sensing | Extraverted Thinking |
3rd - Relief/Unsettling | Extraverted Feeling | Introverted Intuition | Extraverted Intuition | Introverted Feeling |
4th - Aspirational/Projective | Introverted Intuition | Extraverted Feeling | Introverted Feeling | Extraverted Intuition |
5th - Opposing/Backup | Introverted Sensing | Extraverted Thinking | Introverted Thinking | Extraverted Sensing |
6th - Critical/Discovery | Extraverted Thinking | Introverted Sensing | Extraverted Sensing | Introverted Thinking |
7th - Deceiving/Comedic | Introverted Feeling | Extraverted Intuition | Introverted Intuition | Extraverted Feeling |
8th - Devilish/Transformative | Extraverted Intuition | Introverted Feeling | Extraverted Feeling | Introverted Intuition |
Improvisor
|
Conservator
|
|||
Type |
ESEFIP
|
ISEFIP
|
ESIFEJ
|
ISIFEJ
|
1st - Leading/Dominant | Extraverted Sensing | Introverted Feeling | Extraverted Feeling | Introverted Sensing |
2nd - Supporting/Overprotective | Introverted Feeling | Extraverted Sensing | Introverted Sensing | Extraverted Feeling |
3rd - Relief/Unsettling | Extraverted Thinking | Introverted Intuition | Extraverted Intuition | Introverted Thinking |
4th - Aspirational/Projective | Introverted Intuition | Extraverted Thinking | Introverted Thinking | Extraverted Intuition |
5th - Opposing/Backup | Introverted Sensing | Extraverted Feeling | Introverted Feeling | Extraverted Sensing |
6th - Critical/Discovery | Extraverted Feeling | Introverted Sensing | Extraverted Sensing | Introverted Feeling |
7th - Deceiving/Comedic | Introverted Thinking | Extraverted Intuition | Introverted Intuition | Extraverted Thinking |
8th - Devilish/Transformative | Extraverted Intuition | Introverted Thinking | Extraverted Thinking | Introverted Intuition |
Lenore Thomson offers yet another model of the cognitive functions. In her book, Personality Type: An Owners Manual, Thomson advances a hypothesis of a modular relationship of the cognitive functions paralleling left-right brain lateralization. In this approach the Judging functions are in the front-left and right-back brain and the Perception functions in the right-back and left-front brain. The extraverted functions are in the front of the brain, while the introverted functions are in the back of the brain. The order of the cognitive functions are then determined not by an archetypal hierarchy (as supposed by Beebe) but by an innate brain lateralization preference.
Brain Types by Lenore Thomson |
|
Front of Left Brain | Front of Right Brain |
Extraverted Thinking & Extraverted Feeling |
Extraverted Intuition & Extraverted Sensing |
Introverted Sensation & Introverted Intuition |
Introverted Feeling & Introverted Thinking |
Back of Left Brain | Back of Right Brain |
Type |
ISITEJ
|
ISIFEJ
|
INIFEJ
|
INITEJ
|
Dominant | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
Secondary | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
Left-brain | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
alternatives | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
Right-brain | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
double agents | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
Tertiary | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
Inferior | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
Type |
ISETIP
|
ISEFIP
|
INEFIP
|
INETIP
|
Dominant | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
Secondary | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
Right-brain | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
alternatives | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
Left-brain | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
double agents | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
Tertiary | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
Inferior | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
Type |
ESETIP
|
ESEFIP
|
ENEFIP
|
ENETIP
|
Dominant | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
Secondary | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
Right-brain | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
alternatives | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |
Left-brain | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
double agents | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
Tertiary | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
Inferior | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
Type |
ESITEJ
|
ESIFEJ
|
ENIFEJ
|
ENITEJ
|
Dominant | Extraverted Thinking | Extraverted Feeling | Extraverted Feeling | Extraverted Thinking |
Secondary | Introverted Sensing | Introverted Sensing | Introverted Intuition | Introverted Intuition |
Left-brain | Extraverted Feeling | Extraverted Thinking | Extraverted Thinking | Extraverted Feeling |
alternatives | Introverted Intuition | Introverted Intuition | Introverted Sensing | Introverted Sensing |
Right-brain | Extraverted Sensing | Extraverted Sensing | Extraverted Intuition | Extraverted Intuition |
double agents | Introverted Thinking | Introverted Feeling | Introverted Feeling | Introverted Thinking |
Tertiary | Extraverted Intuition | Extraverted Intuition | Extraverted Sensing | Extraverted Sensing |
Inferior | Introverted Feeling | Introverted Thinking | Introverted Thinking | Introverted Feeling |