The operant training and generalization of pronouns and a verb form in a language delayed child.

The purpose of the present investigation was to train the correct use of three pronouns and the verb from "are" in a language delayed child and to assess the generalization of these trained responses to untrained stimuli. Within a multiple base-line design the four selected behaviors were sequentially trained using the techniques of positive reinforcement, modeling, and punishment for inappropriate responses. At succeding stages of training, probe trials were conducted to assess the extent of generalization of trained responses to untrained stimuli. A 100% generalization of trained responses to untrained stimuli was obtained for each of the four linguistic behaviors.