Ever get the cold shoulder? Turns out it may be the temperature (and not those less-than-stellar jokes) at fault. A recent study suggests people are less likely to pick up on kindness and generosity when exposed to cold temperatures [1]. So while eye contact and a friendly smile can't hurt, it may be best to wait until the heat’s on to reach out for a handshake.

Playing It Hot and Cold — The Takeaway

In the study, participants held either a cup of hot or iced coffee while evaluating a stranger's personality. The group holding colder brews tended to perceive others as less generous and caring, while those holding the warm cups displayed more trust [1].

But there's more to this link than the heebie-jeebies. The researchers suggest a part of the brain called the insula processes both the body's responses to temperature and feelings of trust [1]. Because of this connection, social experiences might in turn affect our perception of temperature. In a separate study, participants who recounted a socially isolating experience associated them with cooler temperatures, whereas those who recalled warm-and-fuzzy moments remembered significantly warmer temperatures [4]. It seems people might simply not be able to help but associate warmth with positive memories and the cold with scarier, shivery moments we'd all love to forget [1].

The Tip

Turn up the heat before making new friends. Studies suggest warmer temperatures make people more trusting.