No abstract

Researchers have identified an unbalanced diet as a key risk factor in the etiology of many chronic diseases (World Health Organization, ). Although researchers have found that numerous factors influence children's food choices, no assessment exists to identify these factors. In Experiment 1, we established preliminary empirical evidence of children's preferences for healthier and less‐healthy foods, and found that 16 of 21 children preferred less‐healthy foods to healthier foods. In Experiment 2, we established the utility of an analogue, competing parameters assessment designed to approximate children's food choices in the natural environment. We identified either quality or immediacy as the most influential parameters governing four of four childrens' food choices. We found that effort influenced the efficacy of these reinforcer parameters in a predictable manner for one of four children.

Providing a choice of reinforcers is a commonly used strategy with children with autism spectrum disorder; however, less is known about the differential effectiveness and efficiency of providing choices before or after responding during acquisition tasks. Therefore, we evaluated reinforcer choice using untaught targets prior to and following responding. Results showed faster acquisition of targets in the consequence condition for 2 of 3 participants. These data provide preliminary support that providing choice prior to responding may not result in the most efficient acquisition for some individuals.

The previous issue of The Behavior Analyst contained an article by Critchfield (2011), entitled ''Interesting Times: Practice, Science, and Professional Associations in Behavior Analysis,'' about a rift between the field's scientists and practitioners. Critchfield observed that the science and practice of behavior analysis are subject to different contingencies of survival. He argued from history that scientists and practitioners are served best by aligning with separate professional associations to manage these contingencies. And, he concluded that behavior analysis would be served best if its scientists aligned with the Association for Behavior Analysis International (ABAI) and its practitioners with the Association of Professional Behavior Analysts (APBA).

The current study examined the efficacy and efficiency of incorporating instructive feedback within matrix training to teach children with autism spectrum disorder (ASD) to label common characters and cities. Experimenters taught one set of responses using a non-overlapping matrix, a second set of responses using an overlapping matrix, and a third set of responses using a non-overlapping matrix along with secondary targets to three individuals with ASD. The results demonstrated that all teaching methods were effective, and all trained and untrained responses were acquired. Matrix training with instructive feedback was equally as efficient as non-overlapping matrix training and overlapping matrix training, requiring about the same number of sessions for each participant to acquire the responses. The findings demonstrated that establishing recombinative generalization through matrix training and instructive feedback is equally and maybe even more effective and efficient than matrix training in isolation in some circumstances.