Via gamingblog.org, a reference to a now-restricted article in The Harvard Business Review where Professor Jenkins offers a few interesting quotes:
Gamers become very good at making rapid decisions based on limited information. Online games make constant demands on your attention; there are multiple problems emerging at the same time, and players get very good at making reasonable predictions and charting actions based on information as it comes in…
Collaborative play is quickly becoming dominant in this medium. Most people who play alone are just rehearsing the skills they need to participate in group activities. Users of multiplayer or alternative-reality games learn to work with other people over distance, to share knowledge, to resolve disputes quickly, and to stay on task.