I don't know if "read a book" is a "social activity," meanwhile "play video games" often is a social activity. Not to mention there are gains in attending concerts, exercise classes, airtravel, and using the internet-- all of which are social activities. It's kind of an outdated survey if the goal is to track social activity. Each individual question is interesting on its own though.

Playing online video games can be a social activity but more often than not it is a parasocial activity.