A Comparison of Baseline Procedures in Task Analyses.

Several methods for assessing baseline performance in chained tasks have been outlined in the literature, including the fixed-opportunity probe (FOP) and the multiple-opportunity probe (MOP). Concerns have been raised regarding how each of these methods might change the baseline performance of a task, affecting the interpretation of experimental control. The purpose of the current study was to conduct a within-subject comparison of both the FOP and MOP procedures for children with autism performing daily living and self-care skills. Results indicated that, for most participants, the MOP resulted in elevated performance during baseline compared to the FOP, and that for some participants the MOP resulted in acquisition prior to direct training. Because of the possibility that the FOP might result in suppressed baseline performance, it is recommended that in most cases clinicians and researchers use the MOP when assessing baseline performance in chained tasks in order to obtain the most accurate data.

Identifying the relation between feedback preferences and performance.

Performance feedback is a common organizational behavior management intervention (Gravina et al., 2018) that typically yields consistent effects when combined with other procedures (Alvero et al., 2001). A noteworthy characteristic that might affect feedback effectiveness is timing (Lechermeier & Fassnacht, 2018). Given the frequent use and practical utility of feedback, we assessed feedback preference across three feedback timing options: after step, after trial, and after session. We used a direct-choice paradigm to assess feedback timing preferences with undergraduate students completing two multistep computerized tasks. The data obtained suggest that most participants shifted their preference from relatively proximal (e.g., after step) to distal feedback (e.g., after session) as they acquired the tasks. A few participants' preferences varied despite increases in performance. We discuss implications based on the current findings and future directions for research.

Assessment and treatment of response to name for children with autism spectrum disorder: Toward an efficient intervention model.

Response to name (RTN) is an early developmental milestone, deficits in which are associated with autism spectrum disorder (ASD). This study extends previous research by evaluating an assessment and treatment model for RTN with 13 children with ASD. For all participants, phase 1 was a naturalistic social baseline. The 9 children who did not meet mastery criteria in phase 1 underwent a series of treatment conditions in phase 2. In phase 3, treatment components were removed, and generalization was assessed. Results indicated that tangible reinforcement procedures can produce rapid increases in discriminated RTN, sometimes without prompts. The total number of trials to mastery were reduced in the current study relative to previous research. Results also provide preliminary evidence to suggest that the phase 1 baseline condition may produce distinct patterns of RTN that could be used to predict treatment effects and further reduce trials to mastery in future work.

A multicomponent approach to thinning reinforcer delivery during noncontingent reinforcement schedules.

We evaluated a noncontingent reinforcement procedure that involved initially providing three subjects with signaled, continuous access to the functional reinforcer for aggression and slowly increasing the amount of time subjects were exposed to the signaled unavailability of the reinforcer. Additionally, alternative potential reinforcers were available throughout the sessions. Results showed immediate and substantial reductions in aggression for all three subjects. The clinical utility of this intervention is discussed, and future research directions are recommended.