Building Capacity: A Systematic Review of Training in the Diagnosis of Autism for Community-Based Clinicians.

In an effort to reduce the "waitlist crisis," researchers have developed training programs to educate community-based clinicians in best-practice autism diagnostic assessments. This systematic review aims to synthesize the effectiveness and implementation outcomes of such trainings. The following databases were searched from inception until August 2023: PubMed, Web of Science, APA PsycINFO, CINAHL, ERIC, and a select number from Google Scholar. Ten studies were included in the present review because they met the following criteria: development and/or evaluation of a training for practicing community-based clinicians to diagnose autism, published full-text in English, and original research. Risk of bias was assessed through an adapted NIH quality assessment tool. Only seven distinct training programs in autism diagnosis for practicing community-based clinicians were identified. Trainings demonstrated preliminary efficacy in the improvement of clinician knowledge, self-efficacy, practice behavior, and diagnostic accuracy. Many of the trainings had a reported positive impact on the community and were feasible to participate in; however, systems-level factors (e.g., time and reimbursement) remain as barriers to community-based diagnosis. Findings from the present review position clinician training as a promising strategy to increase families' timely access to an autism diagnosis. More research on training models is needed due to both the limited number of trainings and the limited reported effectiveness and implementation outcomes. Future implementation studies are also needed to reduce systems-level barriers and to aid in the determination of what trainings best fit the needs of different contexts.