This review of research discusses how children with autism may acquire equivalence classes after learning to supply a common oral name to each stimulus in a potential class. A proposed methodology for researching referent naming and class formation, analysis of stimulus classes, and generalization is offered. (CR)

Three students (ages 17, 19, and 21) with moderate disabilities were taught to read and match-to-sample sight words comprising 4 4-member stimulus sets. Student performance indicated that symmetric relations emerged before one-node transitive relations and that one-node transitive relations emerged before two-node transitive relations. Results…