Yes, but likeability in an interview measures something only loosely related to likeability in the long run. Someone who is a little shy can make a great coworker/employee/friend/whatever, but you won't find that out watching them squirm in front of a whiteboard. An interview only directly measures the ability to win over strangers, and that might right for a sales position, but for most engineering positions it's a big extrapolation to guess how the candidate will perform in a team when comfortable.