Researchers conducted a nationally representative survey of young people between the ages of 10 and 17, interviewing them by telephone twice, in 2008 and again in 2010. (health.com)
The researchers examined data from four nationally representative surveys from 1980 to 2006. (sciencedaily.com)
Principals see a lack of time, inadequate teacher training, and funding as barriers to carrying out social - emotional learning in their schools, a nationally representative survey found. (blogs.edweek.org)