In a recent LinkedIn post, Teresa Torres explores the nuanced impact of communication modality on user engagement, specifically highlighting the power of voice over text in building trust with AI coaches. Torres, a recognized expert in product discovery, shared findings from Rest’s team that underscore the emotional resonance of voice-based interactions.
The Human Element in AI Coaching
Torres emphasizes that the perceived warmth of voice is a critical factor, particularly when users are discussing sensitive personal information, such as sleep struggles. This warmth, she argues, is instrumental in fostering a deeper connection between the user and the AI.
“Rest’s team discovered that voice is warmer than text—and that warmth matters when users are sharing something as private as their sleep struggles.”
According to Torres, this difference in warmth is not merely a superficial distinction but a fundamental driver of user comfort and willingness to disclose. The AI coach’s ability to convey empathy and understanding through vocal cues can significantly alter the user’s perception of the interaction.
Building Trust Through Intimacy
Teresa Torres posits that voice inherently creates a more intimate communication channel. This intimacy, in turn, lays the groundwork for a more robust and trusting relationship with the AI. She elaborates on this point:
“Voice creates intimacy. It builds a different kind of connection with the AI coach, one where trustworthiness becomes the foundation for real progress.”
This observation is crucial for developers and designers of AI-powered coaching tools. It suggests that investing in natural-sounding voice interfaces and nuanced vocal delivery could yield substantial benefits in user retention and the effectiveness of the coaching itself. Torres’s analysis implies that the future of effective AI coaching may lie not just in the intelligence of the algorithms, but in the emotional intelligence conveyed through the AI’s voice.
The Foundation for Progress
Ultimately, Torres highlights that the trust established through voice-based interactions is not an end in itself, but a necessary precursor to tangible user progress. When users trust their AI coach, they are more likely to be open, follow advice, and engage in the consistent effort required for personal growth.
“[Trustworthiness] becomes the foundation for real progress.”
As Teresa Torres points out, the choice of communication modality—voice versus text—can have profound implications for the success of AI-driven personal development tools. Her insights serve as a valuable reminder for the industry to consider the psychological impact of AI interfaces and to prioritize human-centric design principles.
📝 About This Content
This article is based on insights shared by Teresa Torres on LinkedIn.
📅 Originally posted on November 22, 2025 | View original post on LinkedIn →