Socionics has no central authority — it is a living literature with schools, and the schools disagree about how to read the same person. Two models matter for this site, and the disagreement between them is not decoration: it is the product.

MODEL A is Augustinavičiūtė's original architecture — everything the previous pages describe. Eight elements, eight seats, strength and value, stacks colliding into sixteen relations. It reads a person as an information system: what do you process easily, what do you seek, what wears you down. The types, the relation pages, and the matrix on this site are all Model A ground.

MODEL G is the model of Viktor Gulenko and his School of Humanitarian Socionics (SHS) in Kyiv. It keeps the sixteen types and the eight elements but re-reads the whole stack as a budget of energy rather than a flow of information — not "what do you process easily" but "what do you visibly spend yourself on, out in society."

Re-reading the seats moves them. The headline change: the seat Model A calls demonstrative — strong, backgrounded, never claimed as identity — Model G promotes into the visible social mission, the thing the world watches you do. So a person whose background strength runs loud in daily life is precisely where the two schools part ways: classical socionics files that strength under "doesn't care," Gulenko's school files it under "this is who they are."

SHS also types people by structured interview and adds a subtype layer on top of the sixteen types — practices no questionnaire fully replicates, which is why this site labels its Model G reading an approximation.

The consequence of two maps: the same honest set of answers can legitimately read as one type under Model A and a different type under Model G. Most sites resolve this by ignoring it. This one measures it — the test scores every run under both models and shows the split when there is one, margins included, free. When the models agree, that is worth knowing too: agreement makes the hypothesis stronger, not certain.

The exact templates, weights, and the fit formula are public at method §4, along with everything else in the marking scheme.

Model G is Victor Gulenko's energy model, used by the School of Humanitarian Socionics. It keeps the same sixteen types and eight elements but arranges the functions differently and reads them in terms of energy rather than information. This inventory's items were designed for Model A, so the Model G match is an approximation computed from the same evidence, not a diagnosis by Gulenko's school.