Increasing knowledge can lead to negative outcomes when individuals use it for self-interest rather than collective good. Researchers argue that enhanced knowledge can reduce cooperation among rational individuals, potentially worsening overall welfare.

Researchers have discovered how the brain's neural circuits regulate imitative behavior, a key component of social interaction. Using a non-invasive brain stimulation technique, the study shows how specific motor circuits either enhance or inhibit imitation, shedding light on potential clinical applications.

New research reveals why alcohol makes people feel happier in social settings but not when drinking alone. Using fruit flies, scientists discovered that dopamine in the brain plays a key role in amplifying the euphoric effects of alcohol during social interactions.

American adults typically have more friends than recent surveys suggest, with fewer reporting no friends at all. The survey found that an average American adult has four to five friends, and only 2% reported being friendless. Despite general satisfaction, many adults wish for closer friendships and more time with friends. These findings challenge recent concerns about increasing loneliness and declining friendships.