Tracking the dynamic breakdown of contextual coherence in schizophrenia using language models (opens in new tab)

Disorganized speech is a core clinical feature of schizophrenia, reflecting disruptions in contextual integration. To objectively quantify the unfolding nature of natural speech, this study investigated the dynamic temporal trajectory of contextual coherence breakdown using sequential surprisal derived from autoregressive language models. We analyzed transcripts from 249 patients with schizophrenia and 159 matched healthy controls across eight diverse speech tasks. Using two Korean small lang...