Conversations that both people find satisfying may share a measurable rhythm, according to researchers at Dartmouth College in New Hampshire. Their work suggests that talk people enjoy shows a pattern known as pink noise, a concept drawn from physics and now applied to everyday speech.
Pink noise describes a signal in which the variations follow a particular balance across timescales, so that patterns recur in a way that feels neither random nor rigidly regular. The Dartmouth team argues that when two people are mutually engaged in a chat, the back-and-forth of their exchange takes on this structure. The idea gives researchers a way to describe the feel of a good conversation in quantitative terms rather than relying only on how people say they felt afterward.
The Guardian's science editor, Ian Sample, explains the concept in a video published on 13 November 2026, with co-host Madeleine Finlay. The segment introduces the research to a general audience and places it in the wider effort to understand how people connect through language.
The reporting does not yet make clear how many conversations the study examined, what methods the researchers used to measure them, or how strong the effect turned out to be. Those details matter for judging how far the finding can be generalised, and they remain open questions for readers seeking to weigh the claim.