Using functional analysis results to prescribe treatments is the preferred method for developing behavioral interventions. Little is known, however, about the reliability and validity of visual inspection for the interpretation of functional analysis data. The purpose of this investigation was to develop a set of structured criteria for visual inspection of multielement functional analyses that, when applied correctly, would increase interrater agreement and agreement with interpretations reached by expert consensus. In Study 1, 3 predoctoral interns interpreted functional analysis graphs, and interrater agreement was low (M ϭ .46). In Study 2, 64 functional analysis graphs were interpreted by a panel of experts, and then a set of structured criteria were developed that yielded interpretive results similar to those of the panel (exact agreement ϭ .94). In Study 3, the 3 predoctoral interns from Study 1 were trained to use the structured criteria, and the mean interrater agreement coefficient increased to .81. The results suggest that (a) the interpretation of functional analysis data may be less reliable than is generally assumed, (b) decision-making rules used by experts in the interpretation of functional analysis data can be operationalized, and (c) individuals can be trained to apply these rules accurately to increase interrater agreement. Potential uses of the criteria are discussed.

This study evaluated the impact of a peer training intervention on social interactions among three students with autism spectrum disorders (ASD) and their typical peers. Two second graders and one fourth grader with ASD participated. For each student with ASD, two to four typical peers participated in training sessions that targeted increased social interactions. Data collected during lunchtime and recess showed that the peer training intervention generally resulted in increased initiations by trained peers as well as increased initiations and responses by students with ASD. Unexpectedly, untrained peers also showed increased initiations. Future research directions are discussed, including characteristics of the peers selected for training (e.g., gender, popularity) and measurement of qualitative changes in social relationships and opportunities.

There is growing interest in the role that physical illness and pain might play in exacerbating problem behavior in individuals with developmental disabilities. Assessment of these factors, however, is often difficult since many individuals have minimal verbal communication skills. In response to this difficulty, we developed a sequential method of assessment involving retrospective and prospective measurement strategies. We found that the frequency and intensity of problem behavior was greater on "sick" days than on "well" days. Further, the higher the level of pain, the greater was the frequency and intensity of problem behavior. We discuss the concept of pain as a setting event for problem behavior and the intervention strategies that follow from this conceptualization.