{"paper":{"title":"Dynamic Representational Synchrony through Collective Predictive Coding: A Computational Model of Parent-Infant Homeostatic Co-Regulation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Parent and infant agents align their latent representations through interaction before their generative models fully converge.","cross_cats":[],"primary_cat":"cs.MA","authors_text":"Takato Horii, Yushi Tsubamoto","submitted_at":"2026-05-08T09:54:40Z","abstract_excerpt":"Inter-brain synchrony (IBS) observed in real-time dyadic interactions, including parent-infant exchanges, suggests that two agents can align their internal representations through interaction. Yet computational accounts of how such alignment can arise between agents that have only local sensory access and asymmetric internal knowledge remain underdeveloped. We propose a constructive model of parent-infant homeostatic co-regulation that integrates a POMDP formulation of active interoceptive inference with the Metropolis-Hastings Naming Game (MHNG) derived from the Collective Predictive Coding ("},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Notably, this alignment emerged far earlier than the convergence of the generative-model learning and was maintained across successive state transitions during social interactions, indicating that latent representational synchrony does not presuppose fully shared world models.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The specific choice of Metropolis-Hastings Naming Game as the communicative mechanism and the exact asymmetry in generative-model knowledge between agents are taken as given without independent justification that these choices are necessary or sufficient for the reported synchrony.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A POMDP-plus-Metropolis-Hastings model shows latent belief alignment between parent and infant emerges before their generative models fully converge.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Parent and infant agents align their latent representations through interaction before their generative models fully converge.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"dc9c399e934ee8e094120e52e93a40dbfd45d4ae52a7199f8b7b7a363e27583e"},"source":{"id":"2605.07524","kind":"arxiv","version":3},"verdict":{"id":"746ec836-e458-425f-91cc-ae88c5c64d6f","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-13T07:46:59.023560Z","strongest_claim":"Notably, this alignment emerged far earlier than the convergence of the generative-model learning and was maintained across successive state transitions during social interactions, indicating that latent representational synchrony does not presuppose fully shared world models.","one_line_summary":"A POMDP-plus-Metropolis-Hastings model shows latent belief alignment between parent and infant emerges before their generative models fully converge.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The specific choice of Metropolis-Hastings Naming Game as the communicative mechanism and the exact asymmetry in generative-model knowledge between agents are taken as given without independent justification that these choices are necessary or sufficient for the reported synchrony.","pith_extraction_headline":"Parent and infant agents align their latent representations through interaction before their generative models fully converge."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.07524/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T10:42:02.881078Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-20T05:41:12.679534Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T16:31:18.701638Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T11:42:52.169903Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"a0c0a4824048937efb8d5730dbe9312be24d72c3a4260c492c5f73e263e3620a"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}