During an important talk, if someone subtly copies your body stance but their voice suddenly gets a bit lower, what does this specific mix of signs most likely tell you about their changing feelings?

Subtly copying another person's body stance, a non-verbal behavior known as mirroring or postural echo, is an unconscious, often automatic, action that typically signals rapport, empathy, and a desire for social connection. It indicates that the individual is engaged, receptive, and feels a sense of alignment or agreement with the speaker, or is attempting to build such a connection, suggesting they are paying close attention and are in sync with the interaction. Concurrently, a sudden lowering of vocal pitch, which involves a decrease in the fundamental frequency of the voice resulting in a deeper sound, is a vocal adjustment often employed to project authority, gravitas, or seriousness. It can be an attempt to make a statement sound more impactful, credible, or decisive. In many contexts, it also reflects a deliberate effort to control emotions or convey a sense of calm and composure, especially when discussing important or sensitive matters. When these two distinct non-verbal cues occur together – subtle mirroring indicating rapport and engagement, combined with a lowered voice pitch signifying seriousness or authority – the most likely interpretation is that the individual is deeply engaged and feels a strong connection or alignment with the ongoing discussion, yet simultaneously intends for their upcoming communication or internal state to be perceived with significant weight and importance. This specific mix of signs tells you that they are likely preparing to make a substantial point, express a deeply held conviction, or convey a message they want to ensure is taken with utmost seriousness, all while maintaining a foundation of rapport and engagement with the speaker and the context of the talk.