You can view the videos for free, and need to pay only if you want to download and use for training. (blog.commlabindia.com)
In one study, people were asked to rate each other after viewing a video of a person speaking and then engaging in a 3 - minute conversation with that person. (creditdonkey.com)
You can view this program on DVD or by viewing the video on this site. (improvedparenting.com)