The live behaviour on top of the Idiolect Stack: moment to moment, we model our voice on the person in front of us — converging to belong, diverging to stand apart. You did it the last time the phone rang.
This is the one entry that is a behaviour you perform, not a word or a story. Howard Giles's Communication Accommodation Theory (from the early 1970s) names what every speaker does, mostly unconsciously: you model your voice on the person in front of you. You shift accent, pace, vocabulary, and formality either toward your listener (convergence) or away from them (divergence) — and those shifts quietly negotiate belonging, status, and identity in real time.
You soften a strong accent for an out-of-towner; you match a customer's careful formality; parents slip into sing-song with a baby; everyone has a ‘phone voice.’ You pick up a new crowd's slang to be let in. Convergence buys rapport — we trust the voice that sounds a little like ours. (Overdone, it curdles into mimicry or condescension, which is why it has to stay below the surface.)
The opposite move asserts difference. You thicken your accent to plant a flag of where you're from; a teenager builds a register their parents can't use; a speaker leans away from a group's way of talking to signal ‘I am not one of you.’ Divergence is identity worn out loud — and the dark edge of it is Shibboleth: diverge the wrong way at the wrong checkpoint and the modeled voice becomes a death sentence.
Underneath the moment-to-moment flexing is the deeper sense of ‘model’: we acquire the voice itself by modeling the people around us — caregivers, then peers — the way Bandura's social learning describes any imitated behaviour. The Idiolect Stack is the residue of all that past modeling (your defaults); accommodation is the same reflex still running live, aiming your voice at the room you're in right now.
the house discipline — what's established, what's model, what's symbol or hyperbole
You model your voice on whoever is in front of you — converge to belong, diverge to be your own; you did it on the last call you took. — PHONETIKOS · the model · AVAN's read