Schedule Thinning Following Functional Communication Training: Effects of Chained and Multiple Schedules.

Functional communication training (FCT) is used to reduce rates of problem behavior by teaching communicative responses that access functionally equivalent reinforcers. During FCT, the communicative response is typically placed on a dense schedule of reinforcement that is unlikely to be maintained in the natural environment. Experiment 1 evaluated the effects of two schedule-thinning procedures (chained schedules and multiple schedules) on problem behavior maintained by escape from demands for three participants following FCT. The chained and multiple-schedule procedures were effective in reducing rates of problem behavior. Compliance increased under both schedules, but the chained schedule resulted in higher levels of compliance with two participants. In Experiment 2, participants' preference for the chained or multiple-schedule procedure was evaluated using a modified concurrent-chain procedure. One participant preferred the chained schedule. One participant preferred the multiple schedule. One participant did not appear to discriminate between conditions.

Interventions for inappropriate sexual behavior in individuals with intellectual and developmental disabilities: A brief review.

Although prevalence rates vary, 6% to 28% of individuals with intellectual or developmental disabilities (IDDs) engage in inappropriate sexual behavior (ISB), ranging from public masturbation to sexually aggressive behavior. Along with increased risk for contacting the criminal justice system, people with IDDs who display ISB may encounter negative social consequences, restricted community access and barriers to independence, and a variety of counter-therapeutic outcomes. The purpose of the present review is to highlight recent, efficacious behavior-analytic treatments for ISB in individuals with IDDs. Ethical considerations and areas for future research will be discussed.

Blue Light Covers Increase Stereotypy and Decrease On-Task Behavior for Students with Autism.

Some recommended strategies for individuals with autism spectrum disorder (ASD) are not empirically based. The purpose of the study was to evaluate effects of blue light covers on levels of stereotypy and on-task behavior. Four male children with ASD who engaged in repetitive behavior participated. Placing light covers over the classroom's fluorescent lights relative to normal classroom lighting did not improve on-task behavior or stereotypy.

Further evaluation of leisure items in the attention condition of functional analyses.

Research suggests that including leisure items in the attention condition of a functional analysis may produce engagement that masks sensitivity to attention. In this study, 4 individuals' initial functional analyses indicated that behavior was maintained by nonsocial variables (n = 3) or by attention (n = 1). A preference assessment was used to identify items for subsequent functional analyses. Four conditions were compared, attention with and without leisure items and control with and without leisure items. Following this, either high- or low-preference items were included in the attention condition. Problem behavior was more probable during the attention condition when no leisure items or low-preference items were included, and lower levels of problem behavior were observed during the attention condition when high-preference leisure items were included. These findings suggest how preferred items may hinder detection of behavioral function.

Effects of treatment-integrity failures on a response-cost procedure.

Effects of incorrect or partial implementation (poor treatment integrity) on response cost are largely unknown. We evaluated reduced treatment integrity during response cost on rates of 2 concurrently available responses. College students earned points by clicking on either a black circle or a red circle on a computer screen. Experiment 1 compared 2 types of treatment-integrity failures (omission and commission errors) across 2 levels of integrity (20% and 50%). Compared to 100% integrity conditions, omission errors did not suppress responding to the same extent, and commission errors reduced target responding but also decreased rates of alternative behavior. Experiment 2 compared the effects of 20% and 50% omission errors within subjects. Implementation at 50% integrity adequately suppressed responding, but treatment effects were lost at 20% integrity. There may be a critical level at which response cost must be implemented to suppress responding, which has important implications for application.

Assessing the efficacy of pictorial preference assessments for children with developmental disabilities.

Past research has demonstrated that pictorial preference assessments can predict subsequent reinforcement effects for individuals with developmental disabilities only when access to the selected stimulus is provided contingent on a pictorial selection. The purpose of the present investigation was to assess more comprehensively the feasibility of the pictorial format with children with developmental disabilities. In Experiment 1, prerequisite skill assessments were conducted, and the role of a contingent reinforcer was assessed by comparing the results from the pictorial assessment without contingent access to a reinforcer assessment. If contingent access was found to be necessary, the effects of schedule thinning were evaluated to determine whether a pictorial format could be made more practical in Experiment 2. The pictorial format without contingent access was successful with only some participants. However, schedule thinning was found to be an effective method to establish conditioned reinforcement properties for pictorial stimuli to create a more practical assessment for a subset of participants.

Evaluation of treatment integrity errors on mand acquisition.

Manding allows individuals to access reinforcers in their environment. Caregivers may not implement mand-training programs as designed, which could result in decreased mand proficiency. This study evaluated the effects of delivery of the incorrect item (Experiment 1) and response-independent item delivery (Experiment 2) across 4 levels of treatment integrity (0%, 40%, 70%, and 100%) on mand acquisition with individuals with developmental disabilities. During Experiment 1, 2 of the 3 participants acquired the mand fastest during 100% integrity. Delivery of the incorrect item was detrimental to acquisition, but effects were idiosyncratic. During Experiment 2, all participants acquired the mand trained with 100% integrity fastest, followed by the mand trained with 70% integrity. None of the participants acquired the mands trained with 40% and 0% integrity, suggesting that delivery of the item independent of responding was detrimental to acquisition. For mand training to be most effective, caregivers must implement mand training with high levels of integrity.

Increasing accurate preference assessment implementation through pyramidal training.

Preference assessments directly evaluate items that may serve as reinforcers, and their implementation is an important skill for individuals who work with children. This study examined the effectiveness of pyramidal training on teachers' implementation of preference assessments. During experiment 1, 3 special education teachers taught 6 trainees to conduct paired-choice, multiple-stimulus without replacement, and free-operant preference assessments. All trainees acquired skills necessary to implement preference assessments with 90% or greater accuracy during the training sessions and demonstrated generalization of skills to their classrooms or clinic. During experiment 2, 5 teachers who served as trainees in experiment 1 trained 18 preschool teachers. All preschool teachers met the mastery criterion following training. Training teachers to implement preference assessments may increase teachers' acceptance and use of behavior-analytic procedures in school settings.

Preference for blocking or response redirection during stereotypy treatment.

Response redirection and response blocking reduce stereotypy maintained by automatic reinforcement. The current study evaluated the effects of redirection and response blocking on the stereotypic responding of three elementary-age children diagnosed with autism. During the treatment evaluation, redirection and response blocking were evaluated using an alternating treatment embedded in a reversal design. Both procedures resulted in comparably low levels of motor stereotypy. Following treatment evaluation, a concurrent chain was conducted to evaluate participant preference for redirection or response blocking. All three participants preferred redirection. Practitioners may wish to consider participant preference when developing and implementing treatments for stereotypy.

Functional analysis and treatment of aggression maintained by preferred conversational topics.

After an initial functional analysis of a participant's aggression showed unclear outcomes, we conducted preference and reinforcer assessments to identify preferred forms of attention that may maintain problem behavior. Next, we conducted an extended functional analysis that included a modified attention condition. Results showed that the participant's aggression was maintained by access to preferred conversational topics. A function-based intervention decreased aggression and increased an appropriate communicative response.

Relative contributions of three descriptive methods: implications for behavioral assessment.

This study compared the outcomes of three descriptive analysis methods-the ABC method, the conditional probability method, and the conditional and background probability method-to each other and to the results obtained from functional analyses. Six individuals who had been diagnosed with developmental delays and exhibited problem behavior participated. Functional analyses indicated that participants' problem behavior was maintained by social positive reinforcement (n = 2), social negative reinforcement (n = 2), or automatic reinforcement (n = 2). Results showed that for all but 1 participant, descriptive analysis outcomes were similar across methods. In addition, for all but 1 participant, the descriptive analysis outcome differed substantially from the functional analysis outcome. This supports the general finding that descriptive analysis is a poor means of determining functional relations.

Assessing the utility of a demand assessment for functional analysis.

We evaluated the utility of an assessment for identifying tasks for the functional analysis demand condition with 4 individuals who had been diagnosed with autism. During the demand assessment, a therapist presented a variety of tasks, and observers measured problem behavior and compliance to identify demands associated with low levels of compliance or high levels of problem behavior (low-probability demands) and demands associated with high levels of compliance or low levels of problem behavior (high-probability demands). Results showed that clearer functional analysis outcomes were obtained for 3 of the 4 participants when low-probability rather than high-probability demands were used.