Recently, behavioral researchers have extended the application of operant conditioning techniques from the behavior management of individual students to the behavior management of entire classes of students. This extension has been facilitated through the utilization of such contingencies as the interdependent group-oriented contingency. The…

Two years of observation of the behavior of visitors in several museums led to the knowledge of the degree of simplicity that is desirable in museum surroundings and of the need for pamphlets that are better prepared than the usual guide books and catalogs. It also led to the advice that museum directors become experimental psychologists, and that…