Filled Pauses Produced by Autistic Adults Differ in Prosodic Realisation, but not Rate or Lexical Type.

Only 28 adults were studied, and only 27 speakers were included in the prosodic analysis because one control produced too few usable filled pauses. The autistic adults were verbal, socially relatively skilled and motivated, and had average or above average IQ, so results may not apply to autistic adults outside this sample. The conversations were task-based map tasks, not spontaneous everyday conversation. Participants could not see each other, so gesture and eye gaze were excluded. The study compared autistic-autistic pairs and control-control pairs, not mixed autistic non-autistic pairs. The paper measured speech production only; it did not test how listeners perceive these filled pauses or whether they affect understanding. The difference was clearer when contours were categorised as level, rising, or falling than when pitch movement was measured continuously, where both groups averaged near zero.

The study was funded by the German Research Foundation as part of a Cluster of Excellence. The paper states the funders had no role in study design, data collection and analysis, decision to publish, or manuscript preparation. The authors declare no competing interests.

Do not read the pitch difference as evidence that filled pauses cause social communication problems or as a diagnostic marker. The study compared speech production in a map task, did not test listener judgements, and included only verbal, high-IQ autistic adults in same diagnosis pairs.