This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: Alongside words, humans have a treasure trove of nonverbal tools to help express themselves. We chuckle, sigh and gasp to communicate our feelings without uttering a word.
What has amazed researchers for ages is how we rarely stop to think about how we know which sound belongs in which situation. Could unwritten social rules guide these everyday nonverbal sounds? A recent study from the Netherlands looked into when and where it is socially acceptable to express nonverbal sounds such as laughing, sighing, gasping, screaming or groaning.
Instead of bringing participants into a lab or asking them to picture hypothetical situations, the author followed their experiences as they unfolded in everyday life. For seven days, participants used their smartphones to report real-time interactions, capturing nonverbal sounds as they happened. Laughter and sighs were the most welcome sounds in everyday life, earning the highest acceptance across situations.
Screams and retches drew the strongest disapproval and were rated least acceptable. The setting where the sounds were made also mattered. Vocal sounds were far more acceptable at home or in social settings like bars and parties than at work, at school or in public places like libraries and stores.
The findings are published in Philosophical Transactions of the Royal Society B: Biological Sciences. As children, we don't just copy the grown-ups around us. We also quietly absorb a set of mental guidelines about when to turn our emotions up, dial them down, cover them or keep them in check to suit the tone of the moment and our surroundings.
Psychologists call these unspoken social codes display rules. We are generally more expressive in our personal spaces with friends and family but more reserved in public and formal settings. The author noted that earlier research had largely explored these behaviors through hypothetical situations, asking people to imagine how they might respond rather than examining what happens when those situations arise in everyday life.
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