Yes, I think it could.
According to Greg Braden, a researcher in the field of intent and its effect on this reality is that it takes a square root of one percent of a given population to change the course of events. For a population of Earth of 6.8 billion, it would need 8,000 people to focus their intent, towards a positive (not verbally, but emotionally) outcome.
I found this information on an archived Coast to Coast AM with George Noory show on youtube.com. Here's a link to all those interested listening to this interview. Here's the link to this show for all interested.
http://www.youtube.com/watch?v=AjM9JhzlXR0
nightwind