The most important issues affecting teenagers are comprehensively studied in the series The Gallup Youth Survey: Major Issues and Trends. Each volume is filled with relevant statistical information and fascinating stories and reports, most collected by the Gallup Youth Survey, an arm of the famed Gallup Organization, over the past five decades. For more than 70 years, The Gallup Organization has studied human nature and behavior. The Gallup Youth Survey was founded in 1977 to provide ongoing information on the opinions, beliefs, and activities of Americas high school students, and to help society meet its responsibility to youth.