The Stress in America survey was conducted online within the United States by Harris Interactive on behalf of the American Psychological Association between August 11 and September 6, 2011, among 1, 226 adults aged 18 and older who reside in the U.S. In addition to the 1, 226 interviews among the general population, oversamples of 300 caregivers and 1, 221 people living with chronic illnesses were also included in the 2011 research.
FORBES: Study: Stress In America - 8 Cities Explored