Simon Langlois studied government employment in Quebec. He found that even though the government had made efforts to formalize recruitment, over 40 percent of those surveyed found their jobs through personal contacts. In the majority of those cases, the personal contacts were fairly casual, not close friends. What principle is demonstrated here?

the strength of weak ties

the power of strong triads

the way reference groups affect people s behavior

the role group cohesion plays in determining behavior

the power of groupthink