RESUMO
The functional assessment of challenging behavior (e.g., self-injurious behavior) has evolved over many years of research and practice. This concise review summarizes the positive predictive value, negative predictive value, accuracy, sensitivity, and specificity of common procedural adaptations reported to improve functional assessment safety and efficiency. We conclude with suggestions for clinicians and researchers.
Assuntos
Comportamento Autodestrutivo , Humanos , Valor Preditivo dos Testes , Eficiência , Segurança , Reprodutibilidade dos TestesRESUMO
Ecological validity refers to how closely an experiment aligns with real-world phenomena. In applied behavioral research, ecological validity may guide decisions about experimental settings, stimuli, people, and other design features. However, inconsistent use of the term ecological validity in the published literature has led to a somewhat disjointed technology. The purposes of this paper were to review current uses of the term "ecological validity" in the Journal of Applied Behavior Analysis, propose ways to make a study more ecologically valid, and develop a checklist to assist in identifying the type and degree of ecological validity in any given study.
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Lista de Checagem , Projetos de Pesquisa , HumanosRESUMO
Functional communication training is an effective treatment for decreasing socially reinforced destructive behavior (Carr & Durand, 1985). Clinicians frequently use multiple schedules to thin the reinforcement schedule (Hanley et al., 2001). Individuals are often taught to wait for functional reinforcers without alternative programmed stimuli. However, concurrently available items and activities are often accessible in the natural environment. In this study, we taught 4 participants a functional communication response to access functional reinforcers. We implemented a multiple schedule during schedule thinning, comparing a control condition (nothing available during SΔ intervals) to separate conditions with items/activities (moderately preferred tangible items, attention, demands) noncontingently available during SΔ intervals. After reaching the terminal schedule in one condition, therapists assessed participant preference across SΔ conditions. For all participants, the terminal schedule was reached with alternative items and activities, and participant preference corresponded with the most efficient schedule thinning condition. Therapists also indicated preference for alternative items/activities.
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Atenção , Terapia Comportamental , Comunicação , Humanos , Esquema de Reforço , Resultado do TratamentoRESUMO
Functional analyses sometimes do not identify momentary fluctuations in the function of destructive behavior (Bowman, Fisher, Thompson, & Piazza, 1997). In such cases, individuals may mand for the reinforcer that is currently most preferred and display destructive behavior if that mand goes unreinforced. In this study, we conducted a mand analysis to test whether destructive behavior functioned as a precurrent response that increased reinforcement for the participant's mands. We then evaluated a treatment that matched this function of destructive behavior by providing differential or time-based reinforcement of participant mands in accordance with multiple or chained schedules with reinforcement-schedule thinning. Decreases in destructive behavior averaged 97.4% across cases. We discuss these results relative to the importance of matching treatments for destructive behavior to operant functions for both traditional and idiosyncratic functions of destructive behavior.
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Transtorno do Espectro Autista/psicologia , Transtorno do Espectro Autista/terapia , Cuidadores/psicologia , Reforço Psicológico , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Esquema de ReforçoRESUMO
Clinicians regularly use both indirect and direct assessments to identify preferred stimuli to include in control conditions and positive reinforcement test conditions in a functional analysis (FA). However, clinicians often rely on indirect assessment alone (e.g., caregiver report) to identify aversive stimuli to include in negative reinforcement test conditions. In this study, we evaluate a paired-stimulus demand analysis and validate assessment results via FA. Results indicate that, for all 4 participants, the demands selected least often evoked higher rates of destructive behavior than more frequently selected demands. We identified an escape function for all 4 participants in the escape-least selected (LS) condition (true positive finding) and for only 1 participant in the escape-most selected (MS) condition (false negative finding for 3 of 4 participants). These results support the utility of empirically deriving stimuli for inclusion in the negative reinforcement test condition of an FA to decrease the likelihood of false negative findings.
Assuntos
Terapia Comportamental , Reforço Psicológico , Cuidadores , Humanos , ProbabilidadeRESUMO
Arranging periods in which requests for reinforcement are denied in a multiple schedule may result in increased destructive behavior during these periods for individuals who receive functional communication training (FCT) as treatment for severe destructive behavior. Providing access to competing activities during periods of reinforcer unavailability has been shown to minimize destructive behavior. We evaluated methods to identify effective competing activities for use when thinning reinforcement availability in a multiple schedule and compared competing activities embedded within the multiple schedule using an alternating-treatments design. Results suggested at least one competing activity facilitated favorable treatment outcomes for each participant. We discuss building on this empirical approach to identify effective competing activities for use during reinforcement schedule thinning.
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Transtorno do Espectro Autista/terapia , Terapia Comportamental/métodos , Transtorno da Conduta/terapia , Esquema de Reforço , Criança , Pré-Escolar , Extinção Psicológica , Humanos , MasculinoRESUMO
Recent research findings (DeRosa, Fisher, & Steege, ) suggest that minimizing exposure to the establishing operation (EO) for destructive behavior when differential reinforcement interventions like functional communication training (FCT) are introduced may produce more immediate reductions in destructive behavior and prevent or mitigate extinction bursts. We directly tested this hypothesis by introducing FCT with extinction in two conditions, one with limited exposure to the EO (limited EO) and one with more extended exposure to the EO (extended EO) using a combined reversal and multielement design. Results showed that the limited-EO condition rapidly reduced destructive behavior to low levels during every application, whereas the extended-EO condition produced an extinction burst in five of six applications. We discuss these findings in relation to the effects of EO exposure on the beneficial and untoward effects of differential reinforcement interventions.
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Terapia Comportamental/métodos , Extinção Psicológica , Reforço Psicológico , Comportamento Autodestrutivo/terapia , Pré-Escolar , Humanos , MasculinoRESUMO
PURPOSE: This study sought to examine the correspondence between brief functional analyses and more thorough functional analyses as described in the model of functional assessment proposed by Vollmer et al.1 Methods: A panel of trained clinicians indicated the presence/absence of specific functions of problem behavior based on graphic results from brief functional analyses and functional analyses conducted with 19 participants. These conclusions were compared across assessments. RESULTS: The functions identified by the panel based on results of brief functional analyses had low correspondence with those of the more thorough functional analysis conducted with the same participants. CONCLUSIONS: Although brief-functional analyses appear regularly in clinical practice and the literature, findings from this study suggest that results may differ from those of more thorough functional analyses. Additional study is necessary to determine the cause of discrepant results between these two methodologies.
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Transtorno do Espectro Autista/diagnóstico , Comportamento Problema , Adolescente , Transtorno do Espectro Autista/psicologia , Criança , Feminino , Humanos , Masculino , Testes Psicológicos/normasRESUMO
Increased demand for applied behavior analysis (ABA) services has increased the need for additional masters-level practitioners and doctoral-level academicians and clinical directors. Based on these needs, the University of Nebraska Medical Center's (UNMC) Munroe-Meyer Institute has developed a PhD program. The academic structure at UNMC allowed us to create our PhD program in a relatively quick and efficient manner. Our PhD program has many unique features, including (a) close integration of didactic instruction with clinical and research training provided by leading experts in ABA in which students immediately apply concepts introduced in the classroom during coordinated clinical and research practica; (b) structured grant writing training in which students learn to write and submit an NIH-level grant;
RESUMO
Researchers typically modify individual functional analysis (FA) conditions after results are inconclusive (Hanley, Iwata, & McCord, 2003). Hanley, Jin, Vanselow, and Hanratty (2014) introduced a marked departure from this practice, using an interview-informed synthesized contingency analysis (IISCA). In the test condition, they delivered multiple contingencies simultaneously (e.g., attention and escape) after each occurrence of problem behavior; in the control condition, they delivered those same reinforcers noncontingently and continuously. In the current investigation, we compared the results of the IISCA with a more traditional FA in which we evaluated each putative reinforcer individually. Four of 5 participants displayed destructive behavior that was sensitive to the individual contingencies evaluated in the traditional FA. By contrast, none of the participants showed a response pattern consistent with the assumption of the IISCA. We discuss the implications of these findings on the development of accurate and efficient functional analyses.
Assuntos
Transtorno do Deficit de Atenção com Hiperatividade/psicologia , Transtorno do Espectro Autista/psicologia , Terapia Comportamental/métodos , Comportamento Problema/psicologia , Reforço Psicológico , Atenção , Transtorno do Espectro Autista/reabilitação , Cuidadores/psicologia , Criança , Pré-Escolar , Feminino , Humanos , Entrevista Psicológica , Masculino , Jogos e BrinquedosRESUMO
OBJECTIVE: Previous research has supported functional communication training (FCT) as an effective intervention for reducing challenging behavior. Clinicians often program schedule-thinning procedures to increase the portability of the treatment (i.e., reinforcement is provided less frequently). For individuals with escape-maintained problem behavior, chained schedules have proven effective in increasing task completion and supplemental procedures may ameliorate reemergence of challenging behavior as access to reinforcement is decreased. The present study compared the use of a chained schedule-thinning procedure with and without alternative reinforcement (e.g., toys and activities) embedded in an intervention in which escape from the task is provided contingent on a request for a break. METHOD: Two individuals with escape-maintained challenging behavior participated. We compared two treatment conditions, escape-only and escape-to-tangibles, using a single-subject, alternating treatments design with each treatment implemented in a distinct academic context. RESULTS: With the escape-to-tangibles treatment, we reached the final schedule in both contexts with both participants (4 successes out of 4 applications). We did not reach the final schedule with either participant with the escape-only intervention (0 successes out of 2 applications). CONCLUSION: The current results provided preliminary confirmation that providing positive plus negative reinforcement would decrease destructive behavior, increase compliance, and facilitate reinforcer-schedule thinning.
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Signals during delays to reinforcement may lessen reductions in responding that typically occur when there is a delay between a response and its reinforcer. Sparse applied research has been devoted to understanding the conditions under which responding may be maintained when delays to reinforcement are introduced. We evaluated the extent to which providing signals during delay fading affected responding in the context of differential reinforcement of communication responses. Three individuals were exposed to gradually increasing signaled and unsignaled reinforcement delays in multiple-schedule and/or withdrawal designs. Results for 2 of 3 participants suggested that (a) the presence of signals facilitated response maintenance under delayed reinforcement and (b) coordinated basic and applied research may advance both conceptual understanding and clinical outcomes of delayed reinforcement.
Assuntos
Comunicação , Condicionamento Psicológico , Deficiências do Desenvolvimento/psicologia , Aprendizagem por Discriminação , Reforço Psicológico , Adolescente , Criança , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Esquema de ReforçoRESUMO
Basic research with pigeons on behavioral momentum suggests that differential reinforcement of alternative behavior (DRA) can increase the resistance of target behavior to change. This finding suggests that clinical applications of DRA may inadvertently increase the persistence of target behavior even as it decreases its frequency. We conducted three coordinated experiments to test whether DRA has persistence-strengthening effects on clinically significant target behavior and then tested the effectiveness of a possible solution to this problem in both a nonhuman and clinical study. Experiment 1 compared resistance to extinction following baseline rates of reinforcement versus higher DRA rates of reinforcement in a clinical study. Resistance to extinction was substantially greater following DRA. Experiment 2 tested a rat model of a possible solution to this problem. Training an alternative response in a context without reinforcement of the target response circumvented the persistence-strengthening effects of DRA. Experiment 3 translated the rat model into a novel clinical application of DRA. Training an alternative response with DRA in a separate context resulted in lower resistance to extinction than employing DRA in the context correlated with reinforcement of target behavior. The value of coordinated bidirectional translational research is discussed.
Assuntos
Deficiências do Desenvolvimento/psicologia , Transtornos Mentais/psicologia , Resolução de Problemas , Reforço Psicológico , Pesquisa Translacional Biomédica , Animais , Transtornos de Deficit da Atenção e do Comportamento Disruptivo/psicologia , Comportamento Animal , Criança , Pré-Escolar , Deficiências do Desenvolvimento/complicações , Extinção Psicológica , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Ratos , Ratos Endogâmicos , Esquema de Reforço , Adulto JovemRESUMO
We summarize a series of bidirectional research studies that demonstrate the persistence-strengthening effects of differential reinforcement of alternative behavior on problem behavior. We model a possible solution to this problem with rats followed by replication with a human clinical population. The importance of coordinated basic and applied research to stimulate new behavioral technologies is emphasized.