But as Gregory Kohs correctly commented, the Edelman study is not focused on young Americans, it is a world wide study focusing on business leaders.
While the "young American" finding was interesting, the more important finding is how business leaders, world wide, perceive different media.
Posted here is chart on media credibility as it relates to this broader audience.
As with young Americans, business magazines were #1 followed by stock or industry analyst reports, then followed by Television.
This is a great report to bring on a call to document the credibility magazine advertising can bring to a marketing program.