In the field of stimulus generalization, an old yet unresolved discussion pertains to what extent stimulus misidentifications contribute to the pattern of conditioned responding. In this article, we perform cluster analysis on six datasets (four published datasets and two unpublished datasets, included N = 950) to examine the relationship between…

This study explored whether an identity-matching-based stimulus equivalence procedure could be used to teach vowel and consonant stimulus classes to two adolescent females with moderate mental retardation. Both participants acquired five-member classes of vowel and consonant stimuli, which subsequently generalized to vocal classification and to…

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…

Fourteen papers discuss language behavior in schizophrenia. Provided are an introduction to the phenomena, by H. J. Vetter, and considerations of the following: problems posed by schizophrenic language, by M. Lorenz; the validity of clinical judgments of schizophrenic pathology based on verbal responses to intelligence test items, by N. F. Jones;…