Positivitätsresonanz sagt laut New Psychology Research | Moment-zu-Moment-Schwankungen der Positivitätsresonanz waren auch mit Veränderungen der Liebe im Laufe der Zeit verbunden.

From the article: An analysis of data from 148 long-term married couples suggests that couples who display greater positivity resonance tend to score higher on a measure of enduring love. Moment-to-moment fluctuations in positivity resonance were also associated with changes in love over time. The research was [published](https://onlinelibrary.wiley.com/doi/10.1111/pere.70008) in Personal Relationships.

Positivity resonance refers to the shared experience of positive emotion between two (or more) individuals. It arises when people connect in a way that fosters warmth, trust, and a sense of shared humanity. This state is marked by nonverbal synchrony, such as matching facial expressions, coordinated body language, and harmonized tone of voice.

It can occur during everyday interactions—such as shared laughter, mutual eye contact, or a heartfelt conversation—and is thought to trigger the release of neurochemicals like oxytocin, which help reinforce social bonds. Over time, frequent experiences of positivity resonance may support emotional well-being and even physical health. Although often studied in romantic contexts, positivity resonance can occur in friendships, family interactions, and even brief encounters with strangers.

Study author Jocelyn Lai and her colleagues aimed to test whether positivity resonance between romantic partners is associated with markers of love. Specifically, they sought to determine whether couples who experience more frequent positivity resonance also report—or display—more love. The researchers also hypothesized that changes in positivity resonance over time would be linked to changes in momentary expressions of love.