A sociolinguistic model describing how interlocutors adjust speech, lexical choices, paralinguistic features and broader communicative behaviour to converge with or diverge from their conversational partners; adjustments reflect social motives (solidarity, distance, identity, status) and can be automatic, strategic, or both.

Principle

Speakers modify linguistic and paralinguistic forms toward convergence to increase social approval or understanding, or toward divergence to emphasize difference or status; direction and degree of accommodation correlate with social goals, perceived power relations and situational norms.

Demonstration

Illustrative scenario → Situation: A customer service agent speaks with a caller from a different region. Recognition: Agent detects caller’s phonetic features and polite register. Action: The agent slightly adapts pronunciation and formality to match (convergence). Consequence: Caller reports increased rapport and understanding; alternatively, deliberate divergence (maintaining a formal register) could communicate professionalism or distance depending on institutional goals.

Misapplication

Error: Assuming all accommodation is conscious or uniformly beneficial. Why plausible: visible convergence often looks like deliberate mimicry. Correction: Accommodation can be subconscious and may produce unintended identity threats or be perceived as inauthentic; its social effects depend on context and power asymmetries.

Consequence

Shapes social outcomes such as perceived solidarity, group membership, interpersonal liking, linguistic change and indexing of social identity; informs design of communication training, automated voice systems and sociolinguistic analysis.

Reversal

In contexts of strong institutional norms, asymmetric power, or explicit identity protection, accommodation may be restricted, resisted, or counterproductive; in some cases divergence better preserves group boundaries or signals autonomy.

Boundary

Clearly within: adjustments in phonology, syntax, lexicon, speech rate and politeness strategies in face‑to‑face or mediated interaction. Boundary case: scripted media speech where adaptations are preplanned rather than interactive. Clearly outside: purely intrapersonal speech production mechanisms not intended for interlocutor accommodation.

Semantic Tension

Convergence for affiliation ↔ Divergence for identity/status; the theory must reconcile interpersonal motives for similarity with competing motives to assert difference or hierarchy.

Synthesis

Accommodation is a dynamic interplay of automatic entrainment and strategic social behaviour: it both facilitates coordination and indexes social relationships, so its social meaning depends on motive, awareness and asymmetry rather than simple mimicry.