Paul Law, director of the Interactive Autism Network, and his wife, Kiely Law, changed the direction of their careers after having a child with autism. IAN seeks to facilitate research on autism spectrum disorders. Gail Burton/AP hide caption

itoggle caption Gail Burton/AP

Josh Mendoza bounced around 14 different group homes during his two years in foster care. Now 18, he has aged out of foster care and recently moved into his own apartment. Melissa Lyttle for NPR hide caption

itoggle caption Melissa Lyttle for NPR

A technician stores trays of cell tissue in an incubator at the virus laboratories of Chas. Pfizer & Co., Inc., in 1963. Widespread use of the measles vaccine in the U.S. began in the late 1960s and led to the near-eradication of the illness in the country. AP Photo hide caption

itoggle caption AP Photo

In general, researchers have found that kids understand the need for some rules, particularly safety rules like not hitting other children. But when it comes to parents dictating what a child should wear or who they should play with, many kids resist. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Given painful budget cuts in the New York school system, parents say their homemade confections are a more wholesome way to help fund school programs. Stan Honda/AFP/Getty Images hide caption

itoggle caption Stan Honda/AFP/Getty Images