Cognitive Signals in Speech

Filler words like "um" and "uh" are often seen as nuisances, but they actually serve important communicative functions. They signal cognitive effort and indicate to listeners that the speaker needs a moment to gather their thoughts. Interestingly, the type of filler used can affect listener engagement and attention, with "uh" suggesting a shorter pause compared to "um." This insight highlights the complexity of verbal communication and the subtle cues we provide in conversation.