Methodology for AP-mtvU poll on student stresses

The Associated Press-mtvU poll on college student stress, the economy and mental health was conducted April 22 to May 4, 2009. The survey is based on interviews of 2,240 undergraduate students at 40 randomly chosen four-year schools across the country having at least 1,000 undergraduates. The survey was conducted for The Associated Press and mtvU by Edison Media Research of Somerville, N.J., under the direction and supervision of AP's polling unit.