To explore training with multiple exemplars, six severely retarded students (ages 5-21) were taught signed labels for categories of natural objects using either three or five good examples. The arithmetic difference between the two conditions indicated higher levels of generalization following training with five examples for five of the six…

Three studies of five seventh-grade students (ages 12-14) with emotional disturbances were conducted to determine whether a stimulus class would emerge as a result of one conditional discrimination training using direct instruction (implemented with a constant time delay) augmented with instructive feedback. The students were taught to identify…