dunbar’s number

Hiring a social media manager or a salesperson? Maybe you should have the finalists' brains scanned in an fMRI. A larger orbital prefrontal cortex, an area of the brain associated with decision-making and cognitive processing, has been…

Twitter's approach to easy social connections lets people build big networks, often quickly. Celebrities attract millions of followers. Even non-celebrities can develop many thousands of friends; some resort to automation tools to…