Evaluating Preference for Functional and Nonfunctional Stimuli in the Treatment of Destructive Behavior.

The effects of including nonfunctional stimuli that may appear in the natural environment during treatment remain unclear. The current study evaluated preference for differential reinforcement of communication (DRC) treatments with functional reinforcers only and a combination of functional and nonfunctional stimuli. Both treatment conditions resulted in a decrease in destructive behavior and an increase in the communication response for all participants. Two participants preferred the combined DRC condition, whereas one participant showed equal preference for the combined condition and one of the functional conditions.

Further comparison of isolated and synthesized contingencies in functional analyses.

Recent research on functional analyses (FAs) has examined the extent to which problem behavior is maintained by single (isolated) or combined (synthesized) reinforcement contingencies. Outcomes of these analyses might differ depending on the sources of information that are used to inform contingencies included in test conditions. The purpose of the current study was to compare the outcomes of isolated FAs and synthesized contingency analyses (SCAs) with 3 participants. Conditions in both analyses were informed by interviews and both unstructured and structured observations. Problem behavior for all 3 participants was maintained by 1 or 2 isolated reinforcers. Results suggested false-positive SCA results for 2 participants. For 1 participant, a second isolated reinforcer was identified following the SCA, indicating the induction of a novel function. Implications for the use of isolated and synthesized consequences are discussed, as well as the predictive validity of the assessments that are used to inform them.

Individual heart rate assessment and bout analysis of vigorous physical activity in children.

Children should engage in 1 hr/day of moderate-to-vigorous physical activity (MVPA) that results in increased heart rates (HRs) (CDC, 2022). However, precise individualized HR criteria for MVPA are not provided, and it is unclear whether observed behaviors classified as MVPA are associated with elevated HRs indicative of MVPA. The current study replicated an individualized heart rate assessment (IHRA) for identifying MVPA HR zones in children (Van Camp et al., 2021). We then evaluated whether engaging in vigorous PA (VPA) for half of the session resulted in HRs indicative of VPA for at least half of the session when children engaged in running for 30, 60, 90, and 120 s bouts. Individual differences were observed during the IHRA. During the bout analysis, HRs were not within VPA zones for 50% of the session. However, HRs were within moderate PA (MPA) zones, with 30 s bouts producing the highest percentages of MPA.

Using heart rate as a physical activity metric.

Physical activity (PA) is critical for a healthy lifestyle. The current study assessed heart rate (HR) as a primary measure of moderate and vigorous PA with four typically developing children. First, individualized HR assessments were conducted to determine moderate and vigorous HR zones. Next, participants engaged in various exercises at a local YMCA facility (i.e., biking, elliptical, basketball, and exergame boxing) to determine how HR during these activities aligned with their individualized HR zones. During exercise bouts, HR was typically above moderate, but below vigorous HR zones for all participants. Additionally, exercises that restricted range of motion (i.e., biking and elliptical) engendered generally lower HR than exercises with greater range of motion. Vocal instructions to exercise at vigorous levels were effective at increasing HR to vigorous levels for one participant. The advantages of using HR as a metric of PA during assessment and intervention are discussed.

Baseline measurement of running away among youth in foster care.

The current study evaluated the use of various behavioral measures of running away with regard to (a) the differential utility of interval- versus event-based measures, (b) the differential utility of rate versus duration measures, (c) the utility of correcting for occurrence opportunity, and (d) the influence of unit of analysis (i.e., single-subject vs. grouped data). Seven different baseline measures were calculated for 84 runaways, and a unit-size analysis was conducted by constructing groups of various sizes from the original sample. An expert panel evaluated the suitability of the baseline measures for treatment evaluation. Results demonstrate the utility of evaluating duration-based measures and correcting for occurrence opportunity. Results also indicate that single-subject baselines may often be unacceptable for treatment evaluations, regardless of the type of measure selected for use.

Increasing physical activity of children during school recess.

Physical activity is crucial for children's health. Fitbit accelerometers were used to measure steps of 6 elementary students during recess. The intervention included reinforcement, self-monitoring, goal setting, and feedback. Steps taken during the intervention phase (M = 1,956 steps) were 47% higher than in baseline (M = 1,326 steps), and the percentage of recess spent in moderate-to-vigorous physical activity was higher during intervention (M = 25%) than in baseline (M = 4%). These methods successfully increased steps during recess and could be used to increase steps in other settings.

The effects of competing reinforcement schedules on the acquisition of functional communication.

The initial efficacy of functional communication training (FCT) was evaluated when problem behavior continued to produce intermittent reinforcement. Results for 2 of 3 participants showed that FCT was most effective when problem behavior was also exposed to extinction, response blocking, or both.

Collateral effects of response blocking during the treatment of stereotypic behavior.

The collateral effects of response blocking were evaluated while treating stereotypic behavior in a woman diagnosed with autism. Blocking stereotypic behavior (head and tooth capping) was associated with decreases in leisure-item interaction and increases in another stereotypic response (hand wringing). Results suggested that the reduction in item interaction was due to adventitious punishment. Prompts to access an alternative source of reinforcement attenuated the side effects somewhat, but results suggested that the undesirable effects of response blocking may be fairly durable.

Assessing and increasing physical activity.

Increasing physical activity is a crucial component of any comprehensive approach to combat the growing obesity epidemic. This review summarizes recent behavioral research on the measurement of physical activity and interventions aimed at increasing physical activity and provides directions for future research.