Search

Abstract: Chelation treatment is used to eliminate specific metals from the body, such as mercury. It has been hypothesized that mercury poisoning may be a factor in autism and data suggest that perhaps 7% of individuals with autism spectrum disorder (ASD) have received chelation treatment. It would therefore seem timely to review studies investigating the effects of chelation treatment for individuals with ASD. To this end, we conducted a systematic search to identify studies that have evaluated the effects of chelation on autism symptomatology. Our search identified five studies, which were analyzed in terms of (a) participant characteristics, (b) dependent variables, (c) study outcomes, and (d) certainty of evidence. Four of the five studies found mixed results and only one study reported positive results. However, given the significant methodological limitations of these studies, the research reviewed here does not support the use of chelation as a treatment for ASD. [Copyright &y& Elsevier]

Abstract: We conducted a systematic analysis of studies that involved the treatment of rumination and operant vomiting in individuals with developmental disabilities. A total of 21 studies involving a combined 32 participants were identified and analyzed in terms of (a) participant characteristics, (b) dependent variables, (c) intervention procedures, (d) functional assessment procedures and results, (e) intervention outcomes, and (f) certainty of evidence. In comparison to previous reviews on rumination and operant vomiting, this review identified fewer studies involving punishment-based interventions and an increase in function-based reinforcement interventions. Preliminary guidelines for practitioners faced with assessing and treating these behaviors are offered and directions for future research are discussed. [Copyright &y& Elsevier]

Abstract: School recess is an opportunity to include students with autism spectrum disorders (ASD) with their typically developing peers and is a setting in which instruction can occur. However, the educational opportunities for children with ASD within recess are often overlooked and recess time is being reduced or eliminated in the United States. This review involved a systematic search and analysis of 15 studies that utilized recess to implement academic, social, or behavioral interventions for students with ASD. Each identified study that met pre-determined inclusion criteria was analyzed and summarized in terms of: (a) participant characteristics, (b) intervention procedures, (c) dependent variables, and (d) intervention outcomes. This review has three main aims: (a) to evaluate and synthesize the evidence-base, (b) to inform and guide teachers interested in utilizing recess time for educational purposes, and (c) to stimulate and guide future research in this area. Results demonstrate that recess time can indeed be used to teach target behaviors to students with ASD. [Copyright &y& Elsevier]

Abstract: The purpose of this review is to provide a systematic analysis of studies investigating computer-based interventions (CBI) to improve literacy skills (e.g., reading, writing, and vocabulary) in students with autism spectrum disorders (ASD). This review synthesizes intervention outcomes, appraises the certainty of evidence, and describes software features and system requirements for each CBI. Across studies, CBI''s effect on literacy skills was inconsistent. Some studies reported significant results and large effect sizes and other studies reported no improvements. Given the heterogeneity of the participants and the wide variety of literacy skills targeted for instruction, it is not possible from the existing literature to determine the variables most likely to be associated with effective CBI. Future research addressing this area as well as the relative effectiveness of CBI versus person delivered literacy instruction is warranted. [Copyright &y& Elsevier]

Abstract: This paper systematically reviews research on the effects of gluten-free and/or casein-free (GFCF) diets in the treatment of ASD. Database, hand, and ancestry searches identified 15 articles for review. Each study was analyzed and summarized in terms of (a) participants, (b) specifics of the intervention, (c) dependent variables, (d) results, and (e) certainty of evidence. Critical analysis of each study''s methodological rigor and results reveal that the current corpus of research does not support the use of GFCF diets in the treatment of ASD. Given the lack of empirical support, and the adverse consequences often associated with GFCF diets (e.g., stigmatization, diversion of treatment resources, reduced bone cortical thickness), such diets should only be implemented in the event a child with ASD experiences acute behavioral changes, seemingly associated with changes in diet, and/or medical professionals confirm through testing the child has allergies or food intolerances to gluten and/or casein. [Copyright &y& Elsevier]

Abstract: Shortly after the publication of our literature review on gluten-free and casein-free (GFCF) diets in the treatment of autism spectrum disorders (ASD; ), published the results of experimental evaluation of a GFCF diet. To update our previous literature review, we herein provide an analysis of the Whiteley et al.’s study. The study was well designed, but also contains substantial weaknesses that suggest the need for caution in interpreting the findings reported by Whiteley and colleagues. In conclusion, we maintain our previous position that GFCF diets are not effective in treatment of core symptoms of ASD and should only be implemented in the event a child with ASD experiences acute behavioral changes, seemingly associated with changes in diet, and/or medical professionals confirm through testing the child has allergies or food intolerances to gluten and/or casein. [ABSTRACT FROM AUTHOR]

Abstract: Skin-picking is a type of self-injurious behavior involving the pulling, scratching, lancing, digging, or gouging of one''s own body. It is associated with social impairment, and increased medical and mental health concerns. While there are several reports showing that skin-picking is common in individuals with developmental disabilities, knowledge about effective treatment approaches is sparse. We therefore reviewed studies involving the treatment of chronic skin-picking in individuals with developmental disabilities. Systematic searches of electronic databases, journals, and reference lists identified 16 studies meeting the inclusion criteria. These studies were evaluated in terms of: (a) participants, (b) functional assessment procedures and results, (c) intervention procedures, (d) results of the intervention, and (e) certainty of evidence. Across the 16 studies, intervention was provided to a total of 19 participants aged 6–42 years. Functional assessment procedures included direct observations, analog functional analyses, and functional assessment interviews. The most commonly identified function was automatic reinforcement. Treatment approaches included combinations of differential reinforcement, providing preferred items and activities stimuli (e.g., toys), wearing protective clothing (e.g., helmets or gloves), response interruption and redirection, punishment, and extinction. Improvements in behavior were reported in all of the reviewed studies. Suggestions for future intervention research are offered. [Copyright &y& Elsevier]

Abstract: We reviewed studies involving the treatment of elopement in individuals with developmental disabilities. Systematic searches of three electronic databases, journals, and reference lists identified 10 studies meeting the inclusion criteria. These studies were evaluated in terms of: (a) participants, (b) procedures used to assess elopement, (c) intervention procedures, (d) results of the intervention, and (e) certainty of evidence. Across the 10 studies, intervention was provided to a total of 53 participants aged 3–47 years. Assessment procedures included anecdotal staff reports, participant interviews, direct observation, and modified analog functional analysis. Intervention approaches included differential reinforcement, extinction, functional communication training, response blocking, non-contingent reinforcement, shaping, and scheduled exercise. Positive outcomes were reported in 80% of the reviewed studies. The evidence base suggests that function-based assessment (e.g. functional analysis procedures) and function-based treatments (e.g. functional communication training) may be most effective in the treatment of elopement in this population. Directions for future research are offered. [Copyright &y& Elsevier]