The use of token systems has been supported across a variety of populations, but little research has evaluated the reinforcing value of token systems for individuals with autism. We used progressive-ratio schedules to compare the reinforcing value of an established token system, primary reinforcement, and tokens unpaired with reinforcement. Token systems were variably reinforcing for 2 students with autism and more so than primary reinforcement for 1 student. Results support formal assessment of the effectiveness of token systems.

Over the past three decades, researchers have examined the sensitivity and accuracy of discontinuous data-collection methods. Momentary-time sampling (MTS) and partial-interval recording (PIR) have received particular attention in regards to their ability to estimate the occurrence of behavior and their sensitivity to behavior change compared to continuous data collection. In this article, we summarize these findings and provide recommendations for designing a discontinuous measurement system with consideration of the dimensions of behavior to be measured and the expected direction of behavior change. Keywords: discontinuous data collection, momentary time sampling, partial interval recording ABSTRACT D

A growing body of evidence suggests that treatment integrity of school-based behavior analytic interventions is related to intervention outcomes. These findings are of importance to behavior analysts, educators, and other practitioners working in school settings, and indicate that these professionals should be knowledgeable in the assessment of treatment integrity. In this article, we describe the methods used to measure treatment integrity in research and summarize the findings on consultation characteristics that affect treatment integrity. Based on the reviewed research, recommendations are offered to behavior analysts and school professionals to aid in the measurement and maintenance of treatment integrity in school settings. Descriptors: School-based interventions, treatment integrity ABSTRACT E

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