CROSSTYPE relations ▸ sei ▸ iee
SEI ↔ IEE MODEL A
Semi-duality

Half of duality — reliably the wrong half. The leading functions cover each other exactly as in duality; the support functions don't. Strong starts, weak rescues.

notation:
SYMMETRIC ⇄same relation, both directions
▸ New to socionics? The 90-second primer

Socionics builds types from eight information elements (Ne, Si, Ti, Fe…) placed into eight fixed slots — the slot decides how the element behaves in you.

The three-letter code (SEI) names the top two slots. It looks like an MBTI type; it doesn't convert cleanly — which is the kind of disagreement this site exists to measure.

Want the fuller version? The basics page covers elements, functions, quadras, and the two models.

§1 HOW THE STACKS COLLIDE — unique to this pair
elementin SEIin IEEwhat happens
Sibase (1)suggestive (5)supply meets demand
Fecreative (2)demonstrative (8)SEI works at what IEE does in passing
Nirole (3)ignoring (7)SEI strains at it; IEE covers it without ceremony
Tevulnerable (4)mobilizing (6)IEE's enthusiasm lands on SEI's bruise
Nesuggestive (5)base (1)demand meets supply
Timobilizing (6)vulnerable (4)SEI's enthusiasm lands on IEE's bruise
Seignoring (7)role (3)SEI covers without ceremony what IEE strains at
Fidemonstrative (8)creative (2)SEI's background hum under IEE's craft

slots, in one line: base & creative = native strengths · role = performed on demand · vulnerable = the sore spot · suggestive & mobilizing = what's wanted from others · ignoring & demonstrative = strong but not valued. Full definitions on each type page.

§2 IN PRACTICE

Where it clicks

  1. First meetings run themselves — the lead axis is fully covered.
  2. Interest is real: each has a main strength the other genuinely wants.
  3. Recovery after distance is quick; the opening chemistry re-arms.

Where it grinds

  1. Support fails precisely under load — the helper reaches for a tool the other doesn't want.
  2. Near-miss quality: close enough to retry, wrong enough to fail, repeatedly.
  3. Intimacy plateaus below what the opening promised.
§3 DO THE SCHOOLS AGREE HERE?

MODEL A Intertype relations are classical canon — this page is Model A ground. MODEL G keeps the frame but weights temperament and communication energy differently; where that changes a reading, we say so. Nothing here is invented to manufacture a disagreement. method →

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§4 SEI WITH EVERYONE