Eight-function model of type

Ausra Augustinaviciute (the founder of Socionics) developed a model of personality called Model A, which includes eight functional positions. Every human has every function, and can perceive and process any available information aspect by them; however, depending on where the function is located in a type's functional ordering, the actual quality of the produced information and the means of its use may vary.

The eight-function Socionics model is similar to the eight-function model of Jungian analyst John Beebe. In the Socionics model, the names and roles of the functions are simple, neutral, and have no negative connotation or demonization as in Beebe's model: senex, witch, demon, etc.

The role of a function depending on its location in the structure of the psyche

 * Leading function (Hero/Heroine). This is the strongest conscious function, and the most utilized function of the psyche. A person's outlook and role in life is largely determined by the nature of this function. One is generally very confident in the use of this function, and may defend it when challenged.

* Creative function (Good Parent) assists the dominant function in achieving its essence. One is generally less confident with the use of this function than with his dominant function. As a result, the creative function is sometimes less instrumental when a person is challenged or threatened, or when dealing with new and complex tasks and data.

* Role function (Daemon), is a weak function. One generally tries to be at least adequate in areas where use of the role function is necessary. However, generally one has very little control or confidence over the role function, and criticism is painfully acknowledged with respect to it. 

* Vulnerable function (Trickster), is the weakest function of the psyche. One painfully perceives his complete inability to use this function, and reacts negatively to its imposition upon him. The point of energy loss, the least adequate result, the greatest resistance to loads

* Suggestive function (Anima/Animus), is a weak function which is largely lacked. One requires assistance from somebody confident in this function in order to overcome the difficulties it presents. When left to ones own devices, the suggestive function goes unnoticed.

* Mobilizing function (Puer/Puella). This is a weak function which one often understands poorly. Nonetheless, this function has a strong influence over one's actions. Individuals requires assistance from someone who uses it confidently in order to understand it. Often an individual is only aware that they are totally unaware of how to use this function.

* Observant function (Opposing Personality), the function of personal knowledge. One generally has a good grasp of this function, but attempts to limit its use considerably. The problem of discrepancy between words and deeds - “I know, but I can not”. Controls what is happening in a close environment, dominates, imposes his opinion, but at the same time the individual is not inclined to actively do anything on this function.

* Demonstrative function (Senex/Witch). Consciously coached according to social norms. In the absence of external feed, the activity in function rather quickly decreases.

More about the role of the functional position here >>>

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Last updated 04.01.2026