Yet new research in the field suggests that there are universal triggers, behaviors that almost all of us find inappropriate. Overhearing a one-sided cellphone conversation, for example, tops the list of irritants, transcending generations, gender and cultures.While this may seem unsurprising — people tend to raise their voices on cellphone calls, and their migratory nature can feel as though someone is cavalierly invading our personal space — there’s a cognitive reason they particularly grate: Our survival once depended on predicting what someone would say or do next.“You might think that when you’re having a conversation with someone, your brain is focused on listening,” the authors write. “In fact, your brain is focused on guessing what the person is going to say.”It’s unconscious and automatic — as is the desire to predict when something is going to end. The excruciation of overhearing a cellphone call isn’t just related to the banality of the conversation, or the pitch and volume of the voice — it’s hoping to God that it’ll be over soon, but having no sense how likely that is.
