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AbstractThe rate of discounting future goods is a crucial factor in intertemporal trade‐offs, upon which depends not only individual well‐being but also that of our planet: How much privation now for a temperate future for our grandchildren? What is the best way to measure how the value of future goods decreases with its delay? The most accurate discount functions involve several covarying parameters, making interpretation equivocal. A universal and robust measure is the area under the discount curve, the AuC. The AuC of a hyperbolic discount function is a logarithmic function of the discount rate, k. The same integral also approximates the area under a hyperboloid function. A simple technique converts each datum into estimates of the discount rate, eliminating rogue data points in the process. These trimmed estimates are converted into areas and tested against data, where they succeed at predicting the AuC and its relation to log(k).

AbstractConducting efficient and accurate assessments prior to developing a treatment to eliminate problem behavior is necessary. When surveyed, most clinicians report functional analyses (FAs) to be the most informative in determining the function of problem behaviors when compared to descriptive and indirect methods. However, they also report not conducting FAs as a standard practice. Several barriers are reported, such as lack of time and lack of space. Most FA are designed to be conducted in‐person; however, some have utilized a telehealth service delivery model to conduct such assessments. The current study sought to extend the current telehealth FA literature and address the two most reported barriers by using a video conferencing with caregivers as the primary therapists to determine the function of problem behavior. The function of problem behavior was determined across both participants. Benefits, barriers, and future direction of utilizing such an approach are discussed.

AbstractWe reviewed 13 articles that used functional analysis in the assessment of undesirable behavior emitted by dogs, cats, a baboon, a lemur, a chimpanzee, and a vulture. The functional analysis produced a clear outcome for 32 of 33 subjects, demonstrating its efficacy with nonhumans. We propose several avenues for further examination of its application to nonhumans.

AbstractFunctional analysis (FA) methodology has been deemed the best practice in the field of applied behavior analysis. The data collected in an FA allows behavior analysts to develop the most effective and ethical behavior interventions. With the diagnosis for individuals with autism on the rise along with the forecast of adults who will need support, it may be time to take stock of the available literature. The purpose of this review was to evaluate the behavior analytic research over the last 25 years (1997–2022) on FA and treatment for adults who engage in severe problem behavior. Utilizing specific inclusion and exclusion criteria resulted in the identification of 28 articles. These articles were examined across participant characteristics, target behavior, FA type, FA settings, interventions, generalization, and maintenance. Implications on adult FA and treatment are discussed along with recommendations for practitioners who desire to support this population.

AbstractExtensive reviews of functional analysis literature were conducted 10 (Beavers et al., 2013) and 20 (Hanley et al., 2003) years ago; we expanded this review to capture the vast and innovative functional analysis research that has occurred over the past decade. Our review produced 1,333 functional analysis outcomes from 326 studies on the functional analysis of problem behavior between June 2012 and May 2022. Some characteristics of functional analysis studies were similar across the current and previous two reviews (e.g., child participants, developmental disability diagnosis, use of line graphs depicting session means, differentiated response outcomes). Other characteristics deviated from the previous two reviews (e.g., increase in autistic representation, outpatient settings, use of supplementary assessments, the inclusion of tangible conditions, and multiple function outcomes; decrease in session durations). We update previously reported participant and methodological characteristics, summarize outcomes, comment on recent trends, and propose future directions in the functional analysis literature.

AbstractChildren with autism spectrum disorder often exhibit challenging behavior to avoid exposure to common daily tasks or routines. There is a need to investigate methods to teach appropriate communication to replace challenging behavior and increase tolerance for daily routines. However, the data to support its use to decrease challenging behavior associated with an activity or routine is limited. In the present study, the authors evaluated the use of parent‐implemented functional communication training (FCT) with a modified chained schedule of reinforcement to reduce challenging behavior associated with a nonpreferred daily routine. One 6‐year‐old male diagnosed with autism participated in this study. The functional analysis indicated that he engaged in challenging behavior to terminate throwing trash away. The authors then conducted a treatment evaluation to assess the efficacy of the FCT with a modified chained schedule of reinforcement in reducing challenging behavior and increasing the number of items that could be thrown in the trash. Results indicated that FCT with a modified chained schedule of reinforcement was effective in decreasing challenging behavior.

AbstractThe simultaneous matching‐to‐sample procedures that are widely used to study stimulus equivalence in human participants have generally been unsuccessful in animals. However, functional equivalence classes have been demonstrated in pigeons and sea lions using a concurrent repeated reversal discrimination procedure. In this procedure, responding to one set of stimuli is reinforced but responding to a different set is not and the set associated with reinforcement is changed with multiple reversals during the experiment. The experiments reported here were designed to assess whether functional equivalence classes could be demonstrated in rats using similar techniques. Rats were initially trained with two sets of olfactory stimuli (six odors/set). Following many reversals, probe reversal sessions were conducted in which rats were exposed to a subset of the members of each set and, later in the session, the withheld stimuli were introduced. Responding to these delayed probe trials in accord with the reversed contingencies constituted transfer of function. There was some evidence of transfer in Experiment 1, but the effects were relatively weak and variable. Experiment 2 introduced procedural changes and found strong evidence of transfer of function consistent with the formation of functional equivalence classes. These procedures offer a promising strategy to study symbolic behavior in rodents.

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