The 2013 Edelman Trust Barometer is the firm’s 13th annual trust and credibility survey. The survey was produced by research firm Edelman Berland and consisted of 20-minute online interviews conducted October 16, 2012 – November 29, 2012. The 2013 Edelman Trust Barometer online survey sampled 26,000 general population respondents with an oversample of 5,800 informed publics ages 25-64 across 26 countries. All informed publics met the following criteria: college-educated; household income in the top quartile for their age in their country; read or watch business/news media at least several times a week; follow public policy issues in the news at.