Kids learned better in a sparse lab setting than they did in a decorated room. Of course, if they were familiar with the room, and the decorations came from their own artwork and class projects, perhaps the items would be reminders rather than distractions, but the study didn’t test that possibility.

For the study, 24 kindergarten students were placed in laboratory classrooms for six introductory science lessons on topics they were unfamiliar with. Three lessons were taught in a heavily decorated classroom, and three lessons were given in a sparse classroom.

The results showed that while children learned in both classroom types, they learned more when the room was not heavily decorated. Specifically, children’s accuracy on the test questions was higher in the sparse classroom (55 percent correct) than in the decorated classroom (42 percent correct). —Carnegie Mellon University.