This study investigated the effects of tact prompts on the acquisition and retention of divergent intraverbal responding to categorical questions involving conditional discriminations. A 6-year-old boy with autism participated in the study. A multiple probe design across behaviors was used. A tact-prompt procedure was implemented. The results…

Axe (2008) speculated that some instances of intraverbal responding might be associated with limited or delayed acquisition because they require discrimination of multiple components of verbal stimuli. Past studies suggest that acquisition of responses under control of complex, multicomponent antecedent stimuli (e.g., conditional or compound…

In the fall of 2003, the authors corresponded on the topic of private events on the listserv of the Verbal Behavior Special Interest Group. Extracts from that correspondence raised questions about the role of response amplitude in determining units of analysis, whether private events can be investigated directly, and whether covert behavior…

The effect of stimulus prefamiliarization on children's discrimination learning was investigated. Kindergartners were prefamiliarized with pictures which were identical, similar, or unrelated to pictures used in the learning task. Consistent with predictions derived from previous research, the learning of subjects who were prefamiliarized with…

Performance was consistently higher for pictures than for words, and this difference was unaffected by age, response mode, or presentation paradigm. (Author)

Data were discussed in terms of an outline of an empirically based theory of transfer. (Authors)

Research on learning and conditioning suggests that verbal response modification does not occur in the absence of the subject's ability to define verbally (1) the response-reinforcement relationships and (2) his intention to change his behavior in the direction of reinforcement. This seems to be true for operant conditioning of verbal behavior,…

One hundred twenty-eight preschool boys were subjects in a 4x2x2 factorial design to investigate the change in reinforcer efficacy as a function of prior stimulus exposure. The factors were: (1) amount of repetition, 5, 25, 45, or 65; (2) reinforcer, good or bell; and (3) satiator, good or bell. Two additional groups were run as control groups to…

The contribution of decentration as an underlying component of discrimination learning and discrimination shift behavior was investigated in this study. In addition, the effect of verbal labeling and the relationship of academic achievement to discrimination learning and decentration was considered. The subjects were 120 first grade students who…