Choosing Friday night plans. Deciding what to wear to work. Selecting a new Netflix show to binge-watch. People are influenced by the tastes and opinions of their friends, and vice versa. But that doesn\u2019t mean you\u2019re a carbon copy of your social network\u2014 or does it? We talk with Carolyn Parkinson, an assistant professor of social psychology at UCLA, about why our brains might be more similar that we think.