It does have that, if you visit
www.gametrailers.com you can see a few videos on the game, and one of the developers explains how decisions change the game.
They show multiple choice decisions you have to make and how the characters respond to you by what and how you answer.
here is the link to the video I'm speaking off:
http://www.gametrailers.com/video/pl...walking/728436
Go to the 7 minute mark of the video if you want to go straight to it.