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The effects of a variety of training procedures on the formation of common linked perceptual class which includes the sounds of a person's voice (class A) and the pictures of that person (class B) are described. The results of this study are expected to help in the development of naturally occurring linked perceptual classes.

The after training conditional discriminations among selected stimuli from two perceptual classes, the emergence of novel relations involving other members of both classes was assessed using the cross-class probes. The cross-class probes were presented using one of the four different testing schedules, 2/9 test, 6/3 test, 18/1-RND test, and 2/9 and 6/3 tests.

The effects of three variables on the spontaneous categorization of stimuli in perceptually distinct and novel domains are explored. The spontaneous categorization of stimuli in the untrained stimulus domains showed the emergence of a generalized categorization repertoire.

Two new fill-based and satellite-based perceptual classes were induced, as a result of multiple-exemplar training with stimuli. The emergence of linked perceptual classes was evaluated by the performances occasioned by nine cross-class probes that contained fill variants as samples and satellite variants as comparisons.