Commentary accompanying anti-smoking public service announcements (PSAs) in online forums like YouTube has an impact on the PSA's overall effectiveness. Both negative and positive comments accompanying PSAs degrade the persuasiveness of the videos.
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/F...
Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/F...