Investigated simultaneous occurrence of emergent stimulus-response relations (functional equivalence) and stimulus-stimulus relations (stimulus equivalence). Trained 4- and 5-year olds to emit specified responses to pairs of stimuli in one setting (original training) and to emit other responses to one member of each pair in another setting…

Five male preschool children were studied to determine the extent to which the generalized motor imitation model applies to vocal imitation. The use of a reinforced-imitation condition produced a systematic increase in verbal matching responses among three of the five children, which is consistent with previous studies. (SW)

Investigated the role of an external clock in two temporal conditioning situations involving three-year olds. One situation required the spacing of responses to visual stimuli; the other, producing a response for a set duration. Found that the presence of the clock increased the efficiency of performance. (SW)

Infants averaging 5 weeks and 12 weeks of age were presented with object models and a live model to determine whether infants reliably responded to the models with movement-matching facial gestures. Object models produced no reliable elicitation of gestures, but the live model increased the incidence of gestures among infants of five weeks. (SH)

Children and adults were trained and tested on formation of novel simple discriminations and conditional stimulus relations. Subjects who formed these sets were trained and tested on formation of stimulus equivalence classes. A modest majority of children matched directly paired stimuli; a few matched indirectly paired stimuli. All normal adults…

Focuses on the experimental designs and methodology of 15 studies, most of which used only part of the methodology for the experimental analysis of behavior. Argues that the failure to fully use available research technology may have contributed to researchers' failure to make experimental contact with the definition of reinforcement. (RH)

The results of three experiments involving 6 young children suggest that the generalized imitation effect may not be entirely due to the child's inability to discriminate reinforced fron nonreinforced occasions. Instructional and social variables may strongly influence the generalized imitation effect. (WY)

In this study, a transfer of stimulus control procedure was used to establish generalized verb-noun instruction-following skills in two severely retarded boys. (Author/JH)

Investigates third- and fourth-grade children's verbal evaluations of syllables paired with different reward schedules (full, partial, or none) for "pleasantness" and "curiosity." (Author/ED)

Results were consistent with an increased emotionality or frustration interpretation. (Author)

The stimulus summation hypothesis predicts that the response strength of individual stimuli, when placed in combination, algebraically summate to produce a greater response strength than that of individual stimuli. (Author)