A reference for the technical vocabulary used across this site. Terms are grouped by topic and each has a direct anchor link for use in cross-references.
Model A
Model A
The structural model of a Socionics type, developed by Aushra Augusta. Each type is described by a fixed arrangement of eight information elements across eight function positions. The model defines not just which functions a type uses, but how strongly, consciously and confidently each one is used. Named after Augusta's first initial. See the full Model A page →
Function position
One of eight slots in Model A, each with a defined role. The eight positions are: Leading, Creative, Role, Vulnerable, Suggestive, Mobilising, Ignoring and Demonstrative. The same information element placed in different positions produces different types with different psychological profiles.
Ego block
The first two positions in Model A: the Leading and Creative functions. The Ego block contains a type's strongest, most conscious and most confident functions — the mode of engagement with the world that feels most natural and requires the least effort.
Super-Id block
The fifth and sixth positions in Model A: the Suggestive and Mobilising functions. The Super-Id block contains a type's areas of greatest need — the functions they value most in others and find most difficult to produce reliably themselves. The Dual relationship is defined by one type's Ego block matching the other's Super-Id block.
Super-Ego block
The third and fourth positions in Model A, containing the Role and Vulnerable functions. The area of greatest tension — functions the type is aware they should use but find effortful and unreliable.
Id block
The seventh and eighth positions in Model A: the Ignoring and Demonstrative functions. Strong but background functions — used when necessary, not foregrounded.
Function positions
Leading function
Position 1 in Model A. The type's primary mode of engagement — strong, conscious, confident and valued. Also called the base or programme function. Defines the type's most natural contribution and the lens through which they instinctively interpret experience.
Creative function
Position 2 in Model A. The type's primary tool — used flexibly and creatively in service of the Leading function. Strong and conscious, but more adaptable than the Leading function. Also called the auxiliary function.
Role function
Position 3 in Model A. A function the type is conscious of but uses with effort and limited confidence. Often over-performed under social pressure — the type tries to demonstrate competence here, but it feels strained. Not a reliable resource.
Vulnerable function
Position 4 in Model A. The type's weakest and most sensitive function. Criticism directed at this function lands hard. The type typically avoids situations that demand it and is most likely to feel inadequate when it is exposed. Also called the point of least resistance or PoLR.
Suggestive function
Position 5 in Model A. The type's primary area of need — a function they value highly in others and find nourishing when it is provided. The type cannot reliably produce this function themselves, but they respond strongly and positively to it from others. Also called the base of the Super-Id or the dual-seeking function.
Mobilising function
Position 6 in Model A. The type's secondary area of need. Like the Suggestive function, it is valued in others and energising when present. The type can use it in bursts but cannot sustain it. Also called the activating function.
Ignoring function
Position 7 in Model A. A strong function that the type understands well but actively deprioritises. They are capable in this area but find it uninteresting compared to their Ego block functions. Also called the restrictive function.
Demonstrative function
Position 8 in Model A. A strong function used automatically and in the background — the type rarely talks about it or consciously draws on it, but it is present in their output. Also called the background function.
Information elements
Information element
One of eight aspects of reality that Socionics types process and value differently. Each element corresponds to a type of information about the world — possibilities, sensations, logic, feelings, and so on. Also called a function when describing its position within Model A. The eight elements are: Ne, Ni, Se, Si, Te, Ti, Fe, Fi.
Ne — Extraverted Intuition
→ Extraverted Intuition function page
Perception of possibilities, patterns and potential in the external world. Associated with generating ideas, spotting connections between unrelated things, and seeing how situations could develop. Types leading with Ne tend toward breadth over depth and find constraint frustrating. Full profile →
Ni — Introverted Intuition
→ Introverted Intuition function page
Perception of time, development and inner vision. Associated with long-range forecasting, sensing how things will unfold, and a felt understanding of trajectory. Types leading with Ni tend to be patient, unhurried and oriented toward the future rather than the present. Full profile →
Se — Extraverted Sensing
→ Extraverted Sensing function page
Perception of force, presence and physical reality in the external environment. Associated with decisiveness, willpower, spatial awareness and the ability to act under pressure. Types leading with Se tend to be direct, impactful and comfortable with confrontation. Full profile →
Si — Introverted Sensing
→ Introverted Sensing function page
Perception of internal physical states, comfort, aesthetics and the quality of immediate experience. Associated with attention to health, taste, atmosphere and the fine details of the present moment. Types leading with Si tend to value stability, comfort and sensory quality. Full profile →
Te — Extraverted Logic
→ Extraverted Logic function page
Perception of efficiency, factual information and how things work in practice. Associated with productivity, pragmatic decision-making and the organisation of external activity. Types leading with Te tend to be results-oriented and impatient with inefficiency. Full profile →
Ti — Introverted Logic
→ Introverted Logic function page
Perception of internal logical structure, consistency and classification. Associated with building conceptual frameworks, identifying contradictions and understanding how systems are organised. Types leading with Ti tend toward precision, taxonomy and principled analysis. Full profile →
Fe — Extraverted Ethics
→ Extraverted Ethics function page
Perception of the emotional atmosphere in a group or situation. Associated with expressing emotions openly, managing the mood of others and creating shared emotional experiences. Types leading with Fe tend to be emotionally expressive and attuned to the emotional environment. Full profile →
Fi — Introverted Ethics
→ Introverted Ethics function page
Perception of inner relational states — personal feelings, moral values and the quality of individual relationships. Associated with deep loyalty, personal ethics and a quiet but firm sense of what is right. Types leading with Fi tend to be selective in relationships and reserved in emotional expression. Full profile →
Dichotomies
Extraversion / Introversion
One of the four core Jungian dichotomies. In Socionics, Extraverted types lead with an extraverted information element (Ne, Se, Te or Fe) and are oriented toward changing and acting upon the external environment. Introverted types lead with an introverted element (Ni, Si, Ti or Fi) and are oriented toward adapting to and understanding their environment. Not equivalent to social confidence — an introverted type can be highly socially active.
Rationality / Irrationality
One of the four core Jungian dichotomies. Rational (also called Judging) types lead with a judging function — Logic or Ethics — and tend toward planning, structure and consistent behaviour. Irrational (Perceiving) types lead with a perceiving function — Intuition or Sensing — and tend toward flexibility, spontaneity and responsiveness to the moment. In Socionics notation: Rational types have a lowercase j suffix (e.g. INTj), Irrational types a lowercase p (e.g. ENTp).
Logic / Ethics
One of the four core Jungian dichotomies. Logic types (T) lead with a thinking function — Te or Ti — and prioritise impersonal, systemic analysis. Ethics types (F) lead with a feeling function — Fe or Fi — and prioritise interpersonal understanding and relational values. Neither is more intelligent or morally superior — they are different orientations toward what matters.
Intuition / Sensing
One of the four core Jungian dichotomies. Intuitive types (N) lead with an intuitive function — Ne or Ni — and are oriented toward abstract patterns, possibilities and meaning. Sensing types (S) lead with a sensing function — Se or Si — and are oriented toward concrete reality, the present moment and physical experience.
Jungian dichotomies
The four binary dimensions derived from Carl Jung's typological work that define the 16 Socionics types: Extraversion/Introversion, Intuition/Sensing, Logic/Ethics, and Rationality/Irrationality. Each type is defined by one pole of each dichotomy.
Aristocrat / Democrat
A Reinin dichotomy describing how types relate to group membership and norms. Aristocrats (Alpha and Beta Quadras) tend to emphasise the importance of group membership and shared standards — in-group and out-group distinctions feel meaningful. Democrats (Gamma and Delta Quadras) tend to evaluate individuals on their own merits regardless of group affiliation.
Static / Dynamic
A Reinin dichotomy. Static types perceive the world in terms of states and snapshots — how things are at a given moment. Dynamic types perceive the world in terms of processes and change — how things are moving and developing. Correlates with whether the leading function is static (Ti, Te, Fi, Fe) or dynamic (Ni, Ne, Si, Se).
Positivist / Negativist
A Reinin dichotomy. Positivists tend to describe things in terms of what is present and affirm — they notice what exists. Negativists tend to describe things in terms of what is absent or denied — they notice what is missing. Neither is a measure of optimism or pessimism in the everyday sense.
Reinin dichotomies
Fifteen additional binary dimensions of type, derived mathematically from the four Jungian dichotomies by Grigory Reinin. Includes traits such as Aristocrat/Democrat, Static/Dynamic, Positivist/Negativist, Merry/Serious, Obstinate/Compliant and others. More controversial than the core dichotomies — some are well-supported empirically, others less so.
Intertype relations
Intertype relation
One of 16 defined relationships between Socionics types, describing the characteristic dynamic that occurs when two given types interact. Each relation has a consistent psychological structure regardless of the individuals involved. The 16 relations range from Duality (most complementary) to Conflict (most incompatible). All relations →
Duality
The most complementary intertype relation. Duals have mutually completing Ego and Super-Id blocks — each type's strengths address the other's greatest needs. The relationship tends to feel natural and effortless. Most people recognise their Dual when they encounter them, even before knowing the theory. Full profile →
Activation
An intertype relation between types in the same Quadra who share rationality/irrationality but differ in extraversion/introversion and logic/ethics. Activators energise each other — the relationship is stimulating and positive, though can become overwhelming in close quarters. Full profile →
Mirror
An intertype relation between types who share the same Ego block elements but in reversed order — one type's Leading function is the other's Creative, and vice versa. Mirror partners understand each other's reasoning well but often reach different conclusions. Full profile →
Identity
An intertype relation between two people of the same type. Identical types understand each other completely — but precisely because they share the same strengths and blind spots, they cannot easily help each other where it matters most. Full profile →
Supervision
An asymmetric intertype relation. The Supervisor's Leading function hits the Supervisee's Vulnerable function, creating a dynamic where the Supervisee feels watched, corrected or judged — often without the Supervisor intending this effect. The relationship is not hostile but tends to create tension over time. Full profile →
Benefit
An asymmetric intertype relation. The Benefactor gives naturally and effortlessly to the Beneficiary — whose Suggestive function is addressed by the Benefactor's Creative function. The Beneficiary tends to ideralise the Benefactor. The feeling is not mutual in the same way. Full profile →
Conflict
The most incompatible intertype relation. Conflictors' Ego blocks directly clash — each type's strengths challenge the other's most sensitive areas. Prolonged interaction tends to be draining. Not impossible to manage, but requires conscious effort from both sides. Full profile →
Quasi-identity
→ Quasi-identity relation page
An intertype relation between types who use the same eight information elements but in a different order of priority. Quasi-identicals often reach similar conclusions by entirely different routes — and find each other's reasoning hard to follow despite superficial similarities. Full profile →
Small groups
Quadra
A group of four types who share the same set of valued functions — two extraverted and two introverted elements that the group collectively prioritises. There are four Quadras: Alpha, Beta, Gamma and Delta. Types within the same Quadra tend to share social values and feel most at ease with each other. Full profile →
Club
A group of four types sharing the same broad orientation — NT (Researchers), NF (Humanitarians), ST (Pragmatists) or SF (Socializers). Club members share a general domain of interest but differ in Quadra values and relation dynamics. Full profile →
Temperament
A group of four types sharing extraversion/introversion and rationality/irrationality. The four Temperaments are: EP (Extroverted Irrational), EJ (Extroverted Rational), IP (Introverted Irrational) and IJ (Introverted Rational). Describes characteristic energy patterns and pace. Full profile →
Valued function
A function that a type actively seeks out and responds positively to — either because it is in their Ego block or their Super-Id block. Each type has four valued functions. The four valued functions of all types within a Quadra are the same, which explains the sense of shared values within a Quadra.
Other terms
Augusta, Aushra
Lithuanian researcher (1934–2005) who developed Socionics in the 1970s, drawing on Carl Jung's typology, Antoni Kępiński's theory of information metabolism and her own original contributions. Her type was ILE. The system is named after the word "social" — Augusta's central interest was in the social dynamics between types rather than individual psychology in isolation.
Extratim / Intratim
The Socionics terms for Extraverted and Introverted types respectively. Used in formal type names — e.g. ILE is the Intuitive-Logical Extratim, LSI is the Logical-Sensory Intratim. Equivalent in meaning to Extravert/Introvert but specific to the Socionics tradition.
Information metabolism
The theoretical foundation of Socionics, drawn from the work of Polish psychiatrist Antoni Kępiński. The idea is that the psyche processes information from the environment in a manner analogous to how the body metabolises food — selectively, according to its own structure, extracting what it needs and disregarding what it cannot use. Each type has a characteristic pattern of information metabolism defined by its Model A.
Socionics vs MBTI
Socionics and MBTI both derive from Jung's original typology but developed independently and differ in important respects. The type codes look similar (INTj ≈ INTJ) but the underlying models are not equivalent — MBTI focuses on individual traits, Socionics focuses on information processing and intertype dynamics. Switching between the two using letter-matching produces unreliable results. The systems should be learned on their own terms.