Subtype System

The subtype system is one of two systems used to describe the differences in types. Subtypes are descriptions of natural variations within a type, according to specific development trajectories. A subtype is not a “fixed” type, but instead the current state of the individual at this stage in their life. Despite this, subtypes are relatively constant and, barring any strenuous effort to alter them, can remain unchanged for years or decades at a time. Subtypes are designated by the addition of a dash “-” and a corresponding function after the type name, signaling a heavy reliance on that function. (i.e. NeFi-Te)

Even among people of the same type there is a fair degree of variation present, and indeed also within the same individual across time. This occurs because as each type goes through life, their four functions can be relied upon in different ways in order to adjust and meet the demands of their surroundings. However, this variability is also not chaotic or infinite, nor will an individual ever lose the energetic penalties inherent to their psychology, and which always accompany their use of lower ranking functions.

Subtypes as Modulation

Those who have been conditioned (whether internally or externally) to rely more heavily on any function other than their primary, are in a state of modulation. Modulation is a state which causes the energetic penalty of a function to increase in proportion to its distance from the primary function.

Primary No energetic toll
Auxiliary Minor energetic toll
Tertiary Moderate energetic toll
Polar Strong energetic toll

Subtype does not represent a change in hierarchy. A type’s hierarchy is composed of the functions psychologically present and the energetic relationship that exists between the four functions. An NeFi who has decidedly strong Te does not alter her hierarchy to lead with Te, because to lead with Te would mean to have Te as the most native and energetically seamless process to utilize. Instead, the NeFi’s use of Te will always come with a degree of strain which a TeSi would never experience for their Te, and by this we know Te is a non-native process.

Likewise the use of a polar function may be twice or three times as energetically taxing for a type as the use of the auxiliary. However, this does not mean a person will necessarily be frail or incompetent in their lower functions. It comes down to personal choice. Despite the energetic toll, a fair number of people will invest the energy necessary to attain the benefits of that function. Many willingly decide to tackle their lower functions in order to reach greater integration, maturation, and balance. The use of a non-primary function can be both exhilarating and exhausting at the same time, and for many people the benefits outweigh the penalty consistently enough for them to continue modulating on a regular basis. And when an individual operates within a subtype for decades at a time, their body will become accustomed to a new baseline level of psychological stress, partially reducing the toll.

But the degree to which a person’s use of a lower function is exhausting is also dependent on their level of physical and psychological health. Chemical depression, neurotransmitter imbalances, or other psychological disorders are suspect to increase the difficulty of accessing lower functions, as well as push certain functions deeper into the unconscious. Bringing, and retaining, non-primary functions into consciousness requires the utmost health. If a person’s health is in daily fluctuation, they will be far more likely to default back to the natural resting state of their psyche when coherence/consciousness is faltering.

Four Subtypes

There are four subtypes for each type; one for each function.

  • Primary: This subtype is synonymous with standard development. It is the most native modality of the individual and where the least amount of tension is felt. Thus subtype also has the highest chance of remaining fixated on its default state; viewing life from a monolithic and unchallenged perspective. However, an intelligent balance can develop in a person which allows for the primary to reign properly above all other functions without compromising scope or leading to ignorance.
  • Auxiliary: In this subtype the auxiliary is sought after, which is always of a different I/E orientation to the person’s general attitude. Hence this subtype causes an I/E flip in general attitude. If the person is an NeFi, then their Fi adds the qualities of introversion more deeply into the personality. If the person is a TiNe, then Ne adds the qualities of extroversion more firmly into the personality.
  • Tertiary: In this subtype the tertiary is relied upon, which is always of the same orientation as the primary. Thus, this causes no flip in I/E attitude but instead a double effect of either introversion or extroversion. This subtype will be a “pure” introvert or extrovert, often being either extremely solitary or excessive and manic. The attitude of the tertiary takes priority over the auxiliary function here. So if the person is an NiFe, then Ti’s logic takes priority over Fe’s feeling, leading to a rational (INT) attitude to form. If the person is an SeTi then Fe will add to the personality feeling of Fe, leading to an ESF attitude.
  • Polar: In this last subtype, the polar is given more priority. This function is always of a different orientation to the primary. However, it lacks the psychic representation to dominate the primary function in terms of orientation. The auxiliary has the power to dominate the primary’s introverted or extroverted hold, but the polar instead only contributes an alternative general attitude. An FiNe will not become extroverted for prioritizing Te. Instead, their general attitude would shift from INF to INT due to Te’s logical aspect.

Approximate Temperaments of Subtypes

1st Function 2nd Function 3rd Function 4th Function
FiNe

INF
FiNe-Fi

ENF
FiNe-Ne
ISF
FiNe-Si
INT
FiNe-Te
TiNe

INT
TiNe-Ti

ENT
TiNe-Ne
IST
TiNe-Si
INF
TiNe-Fe
NeFi ENF
NeFi-Ne
INF
NeFi-Fi
ENT
NeFi-Te
ESF
NeFi-Si
NeTi ENT
NeTi-Ne
INT
NeTi-Ti
ENF
NeTi-Fe
EST
NeTi-Si
FiSe ISF
FiSe-Fi
ESF
FiSe-Se
INF
FiSe-Ni
IST
FiSe-Te
TiSe IST
TiSe-Ti
EST
TiSe-Se
INT
TiSe-Ni
ISF
TiSe-Fe
SeFi ESF
SeFi-Se
ISF
SeFi-Fi
EST
SeFi-Te
ENF
SeFi-Ni
SeTi EST
SeTi-Se
IST
SeTi-Ti
ESF
SeTi-Fe
ENT
SeTi-Ni
FeNi ENF
FeNi-Fe
INF
FeNi-Ni
ESF
FeNi-Se
ENT
FeNi-Ti
TeNi ENT
TeNi-Te
INT
TeNi-Ni
EST
TeNi-Se
ENF
TeNi-Fi
NiFe INF
NiFe-Ni
ENF
NiFe-Fe
INT
NiFe-Ti
ISF
NiFe-Se
NiTe INT
NiTe-Ni
ENT
NiTe-Te
INF
NiTe-Fi
IST
NiTe-Se
FeSi ESF
FeSi-Fe
ISF
FeSi-Si
ENF
FeSi-Ne
EST
FeSi-Ti
TeSi EST
TeSi-Te
IST
TeSi-Si
ENT
TeSi-Ne
ESF
TeSi-Fi
SiFe ISF
SiFe-Si
ESF
SiFe-Fe
IST
SiFe-Ti
INF
SiFe-Ne
SiTe IST
SiTe-Si
EST
SiTe-Te
ISF
SiTe-Fi
INT
SiTe-Ne